Whether you’re battling daily fatigue or simply looking to boost your energy levels, high-quality vitamin supplements can significantly impact your well-being. To bring you the most accurate and helpful information, we’ve gone beyond basic research to explore the top vitamins renowned for enhancing your energy. We detailed how these vitamins work and the best ways to integrate them into your diet for maximum benefit.
Our team of nutrition experts shared their insights on the efficacy, safety, and overall impact of each vitamin in question. After thorough consideration and expert consultations, we’ve identified the top 10 contenders. In this guide, we break down how to make informed decisions that can help enhance your daily energy levels and overall health.
Medical disclaimer: This article is intended for educational and informational purposes only. It is not intended as a substitute for medical advice. For health advice, contact a licensed healthcare provider.
How do vitamins help with energy?
Ensuring the body has an adequate supply of certain vitamins can efficiently convert food into energy, support vital physiological functions, strengthen and support the immune system, and keep bodily functions running smoothly. Some key vitamins include:
B vitamins
These vitamins, including B1 (thiamine), B2 (riboflavin), B3 (niacin), B5 (pantothenic acid), B6 (pyridoxine), B7 (biotin), B9 (folate), and B12 (cobalamin), play critical roles in energy metabolism. ( 1 ) In other words, they help the body convert carbohydrates, fats, and proteins into energy.
B12 is especially crucial for forming red blood cells, which transport oxygen throughout the body. Insufficient oxygen transport can lead to fatigue, so adequate B12 levels are crucial for maintaining energy levels. ( 1 )
“The increase in oxygen transport can lead to improved exercise performance by using B vitamins as well.”
Victoria Burgess, Ph.D., CSCS, CISSN, Fortune Recommends Advisor
Vitamin C
Vitamin C is essential for absorbing iron from plant foods, preventing fatigue and anemia. It also supports the immune system, which can help maintain overall energy levels. ( 2 )
Vitamin D
While not directly involved in energy production, vitamin D supports muscle function and immune health, both of which influence overall energy levels. ( 3 )
Vitamin E
Vitamin E promotes energy levels and reduces fatigue by acting as an antioxidant, protecting cells from oxidative stress. ( 4 )
Other ways to increase energy levels
Aside from taking vitamins, there are several effective strategies to boost your energy naturally.
First, consider your diet: eating balanced meals with protein, fats, and complex carbohydrates (which take longer to digest), will help provide sustained energy throughout the day. Hydration is also crucial; even mild dehydration can cause fatigue. Lastly, consuming sufficient protein is essential for muscle repair and growth, and it helps stabilize blood sugar levels, preventing energy crashes. ( 5 )
Another way to support your energy levels is to focus on getting at least 7 hours of sleep a night. A consistent sleep schedule helps regulate your body’s natural rhythms and enhances overall energy. ( 6 )
Finally, managing stress through practices like mindfulness , yoga, or deep breathing can significantly impact your energy levels, as stress is a common energy drainer. By incorporating these habits into your daily routine, you may be able to increase your energy and improve your health naturally.
How to choose the best vitamin for energy for you
There isn’t a one-size-fits-all magic pill for Increasing your energy levels. More often than not, increasing low energy or improving chronic fatigue comes from addressing multiple lifestyle factors, including diet, exercise, sleep, and stress.
There is, however, a chance that a vitamin might help specific health needs you have. Before adding anything to your diet, there are a few key things to consider.
Consider your needs
When choosing the best vitamin for energy, it’s essential to start by considering your individual needs. Health history and lifestyle are unique to each individual, so the vitamin that works best for one person may not be the best choice for another. Review any specific health concerns you have, like chronic fatigue, poor diet, or sleep issues, with a medical professional. By understanding your needs, a doctor can assist you in making an informed choice. ( 7 )
“Even if you are not struggling with the previous and are extremely active as an athlete, understanding how the body processes vitamins through performance and recovery is important.”
Victoria Burgess, Ph.D., CSCS, CISSN, Fortune Recommends Advisor
Know the different types
Familiarizing yourself with the different types of vitamins that can boost energy is crucial. For example, vitamins such as B12, B6, and D are often associated with improved energy levels. ( 1 , 3 , 8 ) Vitamin B12 is known for its role in red blood cell production and neurological function, which can affect energy levels. ( 8 ) Vitamin D, often called the “sunshine vitamin,” can improve mood and energy, especially in those who are deficient. ( 3 )
Knowing the specific benefits and sources of each vitamin will help you choose the one that best suits your needs.
Consult a healthcare professional
Before you start any new vitamin regimen, it’s a good idea to consult with a healthcare professional, like a dietitian or doctor. They can offer personalized advice tailored to your health history and current condition. A healthcare professional can also run tests to pinpoint any vitamin deficiencies you might have and suggest the best supplements to fill those gaps. This step helps ensure that you choose an effective and safe vitamin to target the specific health issues you are facing.
Be mindful of your diet
Your diet significantly influences which vitamins might best boost your energy levels. If you’re missing certain nutrients, a supplement could help fill those gaps. However, if your diet is already well-rounded and rich in fruits, vegetables, whole grains, and lean proteins, you might not need extra supplementation. Taking a closer look at what you eat can help you spot any nutritional shortcomings and decide whether a supplement is necessary or if you can enhance your energy levels simply by tweaking your diet. ( 9 )
“One way to pay closer attention is to properly log your food and review it to see if you are meeting the recommended daily allowance of all nutrients.”
Victoria Burgess, Ph.D., CSCS, CISSN, Fortune Recommends Advisor
11 vitamins that could improve your energy levels
Iron
Iron is important in maintaining energy levels because it helps produce hemoglobin, a protein in red blood cells responsible for transporting oxygen from your lungs. ( 10 ) Adequate blood flow ensures oxygen to the working muscles, which is how they function and perform throughout the majority of our day, especially during physical activity.
Without sufficient iron, your body can’t produce enough hemoglobin, leading to iron deficiency anemia. This condition diminishes oxygen supply to your tissues, often resulting in fatigue, weakness, and decreased energy levels. ( 11 )
Iron also plays a crucial role in supporting muscle function. Without adequate blood flow and oxygen supply, muscles don’t receive the energy they need during physical activity. Low iron levels can lead to reduced muscle function and increased fatigue. This isn’t just noticeable during intense exercise; even if you’re not very active, low iron can cause you to tire easily from simple daily activities, including mental fatigue. ( 12 )
Additionally, iron supplies a variety of compounds needed in the body to produce a unit of energy called ATP. In the body, ATP is the primary energy source, and insufficient iron disrupts this metabolic pathway, further contributing to tiredness and lethargicness. ( 9 )
In addition to energy levels, iron is a key player in immune health. To maintain a healthy immune system, you need enough energy; iron deficiency can weaken your immune system and increase your vulnerability to sickness. ( 10 )
Iron deficiency is a prevalent nutritional issue, particularly among women of reproductive age, pregnant women, infants, and young children. It is the leading cause of anemia, affecting about 25% of the global population. The recommended daily intake for iron is 8 milligrams for adult men and postmenopausal women, 18 milligrams for premenopausal women, and 27 milligrams for pregnant women, reflecting varying needs due to factors like menstruation and pregnancy. ( 10 )
Vitamin recommendations for teens also differ significantly, which is why there are specially formulated multivitamins specifically for this age group.
Maintaining optimal iron levels can be met by eating foods that contain a rich source of iron, like red meat, beans, spinach, or fortified cereal. However, if you’re severely iron deficient, your doctor may prescribe you an iron supplement to increase your iron levels to optimal levels. These supplements are usually best taken in the morning without food, and with something acidic (like orange juice) to increase absorption. Check with your doctor or a dietitian to understand the best approach for you better.
Our team recommends Thorne’s Ferrasorb as it is a highly available iron source with vitamin C for better absorption. Since Thorne’s Ferrasorb contains iron bisglycinate, a chelated form of iron, it is considered a highly bioavailable source of iron. Unlike ferrous sulfate, this form of iron is bound to two glycine molecules, which makes it more easily absorbed in the GI tract. ( 30 ) Chelated iron supplements cause fewer gastrointestinal side effects, such as constipation and nausea, making them more tolerable for many individuals.
Thorne’s Ferrasorb contains 36 mg of elemental iron per serving. This dosage is designed to meet the needs of individuals who require supplemental iron due to conditions like iron deficiency anemia or increased iron needs during pregnancy.
Vitamin C
Vitamin C is commonly recognized for its role in supporting the immune system. As an antioxidant, it helps boost energy levels by reducing inflammation and potentially alleviating fatigue. These small compounds work by neutralizing harmful substances in the body, known as free radicals, thereby possibly preventing diseases like cancer and even treating symptoms associated with chemotherapy. ( 9 )
In addition to being an antioxidant, vitamin C has been shown to stimulate energy levels by increasing iron absorption. In other words, the body may not be able to absorb iron sufficiently if we do not consume enough vitamin C. ( 31 )
Vitamin C deficiency is relatively uncommon in developed countries. However, it can still occur, especially in individuals with poor diets, certain medical conditions, or lifestyles that limit intake of fresh fruits and vegetables. Symptoms of deficiency, such as scurvy, can manifest if intake is consistently below recommended levels over time. ( 14 )
For optimal health, the recommended daily vitamin C intake for adult men is 90 milligrams per day, and for adult women, it is 75 milligrams per day. However, certain conditions, such as smoking, pregnancy, and illness, might increase the need for higher vitamin C intake. ( 14 )
Foods rich in vitamin C, such as oranges, lemons, bell peppers, broccoli, strawberries, and tomatoes, can help you meet your daily requirements. During the cold and flu season, or if you’re not a fan of foods naturally high in vitamin C, you might consider supplementing to boost your immune system.
If you choose to supplement with vitamin C, consider Life Extension Vitamin C and Bio-quercetin , which is highly absorbable and third-party tested, so you can feel confident in what you receive in each dose.
Vitamin D
Vitamin D, often called the “sunshine vitamin,” aids in many processes in your body, including boosting energy and overall health. It helps the body absorb calcium and phosphorus, essential minerals that support muscular function and bone health. Weak bones and muscles from lack of calcium absorption can lead to fatigue and decreased stamina, making it harder to stay active and energized. ( 9 )
Vitamin D also plays a significant role in muscle function. It enhances muscle strength and performance for maintaining energy levels, especially during physical activities. Adequate vitamin D levels ensure that your muscles work efficiently, reducing the feeling of tiredness and helping you stay more active. ( 15 , 16 )
Another critical aspect of vitamin D is its impact on the immune system. It helps regulate and support your immune response, protecting you from infections that can sap your energy. A healthy immune system means fewer sick days and more energy to tackle daily tasks. ( 17 )
“Further, adequate vitamin D levels have been linked to less inflammatory disorders.”
Victoria Burgess, Ph.D., CSCS, CISSN, Fortune Recommends Advisor
Vitamin D has even been linked to mood regulation. Low levels of vitamin D are associated with mood disorders such as depression, which can significantly impact your energy levels. Maintaining adequate vitamin D levels supports mental well-being , directly connected to how energetic you feel. ( 15 )
To get enough vitamin D, spend time in the sunlight, eat foods like fatty fish, egg yolks, and fortified dairy products, or consider supplements. It’s always best to consult with a dietitian or healthcare provider to determine the right approach.
NOW’s High Potency Vitamin D is a great choice for folks looking to fill in the gaps in their diet and keep vitamin D in the optimal range.
Selenium
Selenium is an essential trace mineral that plays a critical role in various bodily functions, including maintaining thyroid health and protecting against oxidative damage through its incorporation into selenoproteins. ( 18 )
It also acts as an antioxidant that helps protect you from oxidative stress caused by free radicals. Free radicals are molecules that can turn into harmful cells and lead to cellular damage and low energy levels. ( 19 ) By neutralizing free radicals, you can reduce inflammation and potentially keep energy levels up. ( 18 )
Optimal selenium levels are necessary for producing thyroid hormones, helping your metabolism function optimally, and keeping energy levels stable. If your thyroid is healthy, you can easily maintain energy levels throughout the day. ( 20 )
Because of its antioxidant properties, selenium also supports immune function. A robust immune system helps reduce illness that could impact your energy levels. Maintaining adequate selenium means that you can fight off bugs and pathogens faster, keeping your energy levels high.
Additionally, selenium is involved in synthesizing selenoproteins, which are crucial for various bodily functions, including muscle function and cardiovascular health. ( 32 ) These proteins help maintain muscle strength and endurance, contributing to overall energy levels.
Getting enough selenium in your diet begins with consuming foods high in selenium. Brazil nuts, seafood, eggs, and whole grains are all good sources. While supplements are an option, you’ll want to speak with your healthcare provider before adding selenium supplements.
Niacin
Niacin, also known as vitamin B3, helps maintain your body’s energy production. Like all B vitamins, niacin is integral to the function of enzymes involved in converting food into energy. These enzymes help us break down the food that we eat into two small molecules that get converted into energy. ( 21 ) These carbohydrates, fats, and proteins eventually turn into ATP, the energy currency cells use to perform their daily function. Without enough niacin, energy production slows down, and fatigue ramps up. ( 21 )
B vitamins are crucial for maintaining energy levels because they convert food into ATP (energy), support red blood cell production for oxygen transport, and ensure nervous system health. B vitamins involve metabolic processes, neurotransmitter synthesis, stress hormone production, and cellular health. Deficiencies in these vitamins can lead to reduced energy production, anemia, and fatigue. ( 21 )
Niacin supports healthy blood circulation. It improves blood flow by dilating blood vessels, ensuring that our body systems and organs get the oxygen and nutrients they need to function well. ( 21 )
“It has also been shown to increase performance measures such as grip strength and improve body composition.”
Victoria Burgess, Ph.D., CSCS, CISSN, Fortune Recommends Advisor
Niacin also plays a role in DNA repair and the production of hormones in the body. Hormones like cortisol help us manage stress and support energy levels during physical and mental distress. ( 21 )
Besides maintaining healthy skin and nerves, niacin plays an important role in digestive health. When these systems function optimally our bodies feel more energized, keeping us active and alert.
To ensure you get enough niacin, include niacin-rich foods, such as poultry, fish, whole grains, and legumes. While niacin supplements are available, consulting with a dietitian or healthcare provider for personalized advice is best. ( 21 )
Vitamin B12
B12 is a water-soluble vitamin that is essential for energy levels. Vitamin B12 is a powerhouse vitamin that impacts red blood cells, mental stamina, strength, and our body’s metabolism. ( 8 )
It plays a role in the production of red blood cells, a key player in the oxygenation of the body’s cells. If your red blood cell count is low due to a vitamin B12 deficiency, also known as pernicious anemia, your tissues and organs are not getting enough oxygen. Pernicious anemia severely impacts your energy levels, leading to a feeling of weakness and fatigue. ( 8 )
Like all other B vitamins, vitamin B12 is vital in converting food into energy. It helps metabolize carbohydrates, fats, and proteins, turning them into glucose, which your body can use for fuel. Without enough vitamin B12, the energy conversion process is not as efficient, leaving you tired and weak. ( 8 )
Vitamin B12 is also a key player in our nervous system, helping produce myelin, a protective coating around nerves that ensures healthy nervous signal transitions. A healthy nervous system supports overall brain health, cognitive function, mood regulation, neurological regeneration, and improved energy levels. The mental health benefits of adequate B12 levels can improve energy levels. ( 8 )
Eating enough foods rich in vitamin B12 means choosing options like protein from meat, fish, dairy, and fortified cereals. People who eat a plant-based diet or who are vegans can benefit from B12 supplements since they do not consume animal products.
Speak with a dietitian or a healthcare provider to determine if you need B12 supplementation. If you do, we like NOW’s B12 Complex , in liquid form for easy consumption and absorption. Most B12 supplements come with large doses, keep in mind that B12 is a water-soluble vitamin so if you are unable to absorb all of it, you will excrete it when you urinate.
Creatine
Despite not being a vitamin, creatine is an essential component of energy production in the body, especially for people who engage in high-intensity activities.
Creatine is most helpful during short bursts of intense exercise such as sprinting or weightlifting. Your muscles rely on ATP, the body’s energy source, for most of your energy; however, once energy levels are depleted, creatine ensures that your muscles have the energy they need to keep performing. ( 22 )
By supplementing with creatine, you can enhance your ability to produce energy quickly, which improves your performance during high-intensity exercise. Particularly with short, intense duration exercises, this helps with athletic performance but can also improve general feelings of energy levels throughout the day when you lead an active lifestyle. ( 23 )
Creatine can support muscle recovery and reduce fatigue, making staying active and maintaining high energy levels easier throughout the day. There may also be a connection between cognitive function and brain health, as our brain uses creatine for various functions. ( 23 )
To boost your creatine levels with food, consume options like red meat and fish or supplement 3–5 grams of creatine daily. This is the recommended effective dose to increase creatine stores, especially if you’re involved in high-intensity exercise or sport. ( 22 ) As always, consult a healthcare provider to determine if a creatine supplement is right for you.
Transparent Labs Creatine HMB is our top choice for creatine because it combines two essential ingredients for optimal muscle growth and strength: creatine monohydrate and HMB. Additionally, the product includes Bioperine to enhance absorption and is a source of vitamin D to support overall health.
CoQ10
Coenzyme Q10, or CoQ10, is an antioxidant found in all body cells, particularly in organs with high energy demands like your heart, kidneys, and liver. Its main function is acting as a precursor to producing ATP, our cells’ preferred energy source.
CoQ10 works within the powerhouse of the cell, the mitochondria, where it helps convert nutrients from the food we eat into energy. Without enough CoQ10, you may become low on energy and more fatigued. It is also a powerful antioxidant that can help protect you from oxidative damage and prevent inflammatory health issues. CoQ10 supports cellular health and may sustain energy levels by reducing oxidative damage. ( 24 )
Our body’s CoQ10 levels naturally decline with age, and certain health conditions or medications can further reduce these levels, potentially leading to decreased energy. For instance, cholesterol-lowering medications are known to lower CoQ10 levels. Some people find that supplementing with CoQ10 helps restore their energy levels. ( 24 )
You can boost your CoQ10 levels through foods like fatty fish, organ meats, and whole grains. Supplements are also available and can be particularly beneficial for adults, folks on medications that deplete CoQ10, or those with specific health conditions. As always, consult with a dietitian or healthcare provider to determine the best approach for your needs.
365 CoQ10 from Whole Foods makes a budget-friendly supplement that is third-party tested and affordable, compared to many others.
Magnesium
Magnesium is vital in boosting energy levels as an essential mineral involved in over 300 biochemical reactions in the body, many of which directly relate to energy production. One of its primary functions is to help convert food from macronutrients like protein, carbs, and fats into usable energy in the body. Without enough magnesium, your body won’t be able to produce energy efficiently, which may induce fatigue. ( 25 )
Magnesium also helps regulate muscle and nerve function, which ensures that your muscles are working properly, impacting everything from physical activity to preventing muscle cramps and sleeping well. Proper nerve function also means that you have better coordination and energy regulation, which keeps you active and alert throughout the day. ( 25 )
Magnesium is a nutrient that impacts a healthy sleep cycle as well. It helps regulate neural transmitters that are involved in sleep and relaxation. Increasing your sleep hygiene–or improving the quality or quantity of your sleep–leads to better recovery and higher energy levels the following day. ( 25 )
Magnesium also supports heart health, contributing to healthy blood pressure levels and maintaining a steady heartbeat. A healthy heart that can pump blood efficiently ensures that oxygen and nutrients circulate throughout the body effectively, which is crucial for maintaining and sustaining good energy levels. ( 25 )
To ensure you get enough magnesium, include magnesium-rich foods, like leafy greens, nuts, seeds, whole grains, and legumes. High-quality magnesium supplements are also available, but it’s best to consult a dietitian or healthcare provider to determine the right approach.
Nature Made Magnesium Oxide is one magnesium supplement we can stand behind. Magnesium supplements from magnesium oxide are highly absorbable and do not have as many negative side effects as other forms. As always, check with your physician before adding a new supplement to your routine.
Vitamin E
Vitamin E is a potent antioxidant that is crucial in shielding your cells from the oxidative damage inflicted by free radicals. Free radicals are unstable molecules generated during everyday metabolic activities and can harm cells, potentially resulting in fatigue and diminished energy levels. By neutralizing these free radicals, vitamin E preserves cellular health and enhances the overall functioning of your body’s systems, thereby contributing to improved energy levels. ( 4 )
Furthermore, vitamin E promotes good circulation by maintaining healthy blood vessels. Proper blood flow ensures that oxygen and nutrients are efficiently delivered to your tissues and organs, which is essential for energy production.
Vitamin E also supports immune function. A healthy immune system means fewer illnesses and infections, which can drain energy. By maintaining strong immunity, vitamin E helps you stay healthy and active. ( 4 )
To ensure you’re getting sufficient vitamin E, consider incorporating foods such as nuts, seeds, spinach, and vegetable oils into your diet. While supplements are an option, consulting with a dietitian or healthcare provider before starting any supplementation is advisable to determine the right approach for your needs.
Life Extension’s Super Vitamin E is a powerful source of antioxidants and third-party tested for quality and potency. This product provides a highly bioavailable form of vitamin E, ensuring efficient absorption by the body. Each softgel contains 400 IU of vitamin E, which effectively supports cellular health and protects against oxidative damage. ( 4 )
NAD+
Nicotinamide Adenine Dinucleotide, or NAD+, is found in all living cells and is vital for many metabolic processes. For one, it plays a key role in energy metabolism by facilitating the transfer of electrons in the reactions that generate energy within cells. ( 26 )
NAD+ levels decline with age; no food or direct supplement source can restore them. However, supplementing with nicotinamide riboside (NR), a precursor to NAD+, may enhance energy levels within the body. ( 26 ) Most NAD+ treatments are expensive, time-consuming, and painful. Tru Niagen , featuring a bioavailable form of NR, is an NAD+ company backed by science, making healthy aging more accessible–in pill form. ( 27 , 28 ) Further human research may be needed to draw conclusive claims about NAD+ efficacy.
NAD+ is vital for cellular energy metabolism. It acts as a coenzyme in chemical processes that convert the food you eat into energy, the primary currency of your cells for fuel. Without sufficient NAD+, your cells can’t efficiently produce enough energy, leading to decreased energy levels and increased fatigue. ( 29 )
Moreover, NAD+ is essential for mitochondrial function, the cell’s energy powerhouse. When NAD+ levels are optimal, your mitochondria work efficiently, producing more energy and helping you stay high energy, particularly as you age. ( 27 )
NAD+ also plays a role in DNA repair and cellular health. It helps activate enzymes called sirtuins, which repair damaged DNA and regulate cellular aging. By supporting these processes, NAD+ helps maintain the health and longevity of your cells, contributing to sustained energy levels and overall healthy aging. ( 29 )
To support and maintain NAD+ production, there are several steps you can take. First, ensure your diet includes foods rich in niacin (vitamin B3), such as poultry, fish, and whole grains. Additionally, supplements like nicotinamide riboside (NR) may be beneficial. As always, we recommend consulting with a dietitian or healthcare provider for personalized advice that suits your specific needs.
FAQs
How quickly do vitamins for energy start working?
The time it takes for vitamin supplements to boost energy levels varies. B vitamins often provide a quick boost within hours to days, while others, like vitamin C, might take a few days to weeks. ( 9 ) Vitamins D and B12 may take several weeks to months, especially if deficiencies are severe, to restore the body’s levels of these nutrients. ( 3 , 8 ) Factors influencing speed include deficiency severity, absorption rates, diet, lifestyle, and the vitamin form. ( 9 ) Consistent intake and addressing deficiencies are crucial for optimal energy levels.
What vitamin gives you the most energy?
No single vitamin is the definitive “most energizing,” as energy levels are influenced by a combination of nutrients. However, B vitamins are particularly renowned for their role in energy production. They play a crucial role in red blood cell production, which helps transport oxygen throughout the body and is essential for converting food into energy. ( 1 ) Deficiency in vitamin B12, specifically, can lead to fatigue and weakness, making supplementation or adequate dietary intake important for maintaining energy levels. ( 8 )
What is the best vitamin for tiredness and fatigue?
Fatigue and tiredness can stem from various underlying causes, making it challenging to pinpoint a single vitamin as the definitive solution for these symptoms, so there is no one best supplement. Vitamin B12 is often considered the most effective for combating tiredness and fatigue due to its critical role in red blood cell production and energy conversion. ( 8 )
Other important vitamins include vitamin D, which contributes to muscle strength and energy levels; vitamin C, which enhances iron absorption and supports immune health; and vitamin B6, which is vital for energy metabolism and neurotransmitter production. ( 9 ) Ensuring an adequate intake of these vitamins, whether through diet or supplements, can be crucial in alleviating fatigue.
Does Vitamin B12 give you energy right away?
Vitamin B12 can provide a quick energy boost, especially if you have a deficiency, but it may not be immediate. ( 8 ) Some people may feel an improvement in energy levels within a few days to a few weeks after starting B12 supplements. ( 8 ) The exact timing can vary based on individual factors such as the severity of the deficiency and how well the body absorbs the vitamin. ( 8 ) For those with normal B12 levels, the effect might be less noticeable.
These statements have not been evaluated by the Food and Drug Administration. These products are not intended to diagnose, treat, cure, or prevent any diseases.
Our experts
Victoria Burgess, Ph.D., CSCS, CISSN
Victoria uses her extensive nutrition and performance knowledge every day. She has a Ph.D. in Health and Human Performance from Concordia University Chicago and holds her NSCA CSCS and Certified Sports Nutritionist (CISSN). She’s an adjunct professor in the Human Performance and Nutrition department at Concordia University Chicago and Parker University, where she teaches undergraduate, graduate, and doctoral-level courses. She also sits on the advisory board for both the International Society of Sports Nutrition and the National Advisory Council of the First Responder Institute.
Lily Moe
Lily is a Brooklyn-based writer and editor with over seven years of experience in health media. As a former Fitness Coach, Lily’s editorial prowess has largely focused on fitness, nutrition, and weight management. She has also spent a fair share of time in testing labs, analyzing everything from protein powders to yoga mats. Her work has appeared in Verywell Fit, Verywell Mind, Health, and more.
Joana Neziri, M.S., NASM CPT
Joana is a writer, editor, and content strategist focusing on nutrition, fitness, and all things health. After earning a master’s degree in business from the University of North Florida, she began a career in research and digital marketing.
Kelly Uhler
Kelly has a multifaceted background in elder care, health care, and copywriting. She has worked for organizations such as A Place For Mom and Homecare.com, which gave her the opportunity to work closely with families, providing reliable information to help them make informed decisions about their loved one’s health, safety, and quality of life.
Caroline Thomason, RD, CDCES
Fortune Recommends Nutrition Writer
About Author
Caroline is a registered dietitian (RDN) and diabetes educator (CDCES) turned media dietitian, speaker, nutrition consultant, and writer in the Washington, D.C. area. As a media dietitian, she’s worked with brands like Alaskan Seafood Marketing Institute, Life Extension, egglife foods, Wonderful Pistachios, Catalina Crunch, NOW Foods, OLIPOP, FOND Bone Broth, InBody USA, BeBOLD Bars, American Bone Health, and more.