B5 is a coenzyme your body uses to break down fats, carbohydrates, and proteins into usable energy

Pantothenic acid, also called B5, sits at the center of a molecule called coenzyme A (CoA). Your cells use CoA to convert the food you eat into energy and to build new fats and cholesterol. Without B5, that chemical machinery stalls. Unlike some vitamins, B5 deficiency is extremely rare in people eating ordinary food—it shows up mainly in severe malnutrition or certain genetic disorders. The real question for most people is not whether they have enough, but whether they need more than the standard amount for specific health goals.

B5 also plays a role in making hormones and neurotransmitters, the chemical messengers your brain uses. Some research suggests higher intakes may support skin healing and reduce inflammation, though the evidence is still emerging and often comes from small studies or animal work rather than large human trials.

Key Takeaways

  • B5 is required to convert food into energy and is found in nearly all foods, making deficiency extremely rare in people eating a normal diet.
  • The recommended daily intake is 5 mg for adults, and most people meet this through diet alone without supplementation.
  • Research on B5 for skin health, wound healing, and athletic performance shows promise in small studies but lacks large-scale human evidence.
  • B5 is water-soluble, so excess amounts are excreted in urine rather than stored, making toxicity from food or supplements unlikely.

How B5 works in energy production and metabolism

When you eat a meal, your digestive system breaks it down into smaller molecules: amino acids from protein, glucose from carbohydrates, and fatty acids from fat. Your cells then need to convert these into a form of energy they can actually use, called ATP. This conversion happens inside the mitochondria—the power plant of the cell—and it requires coenzyme A, which B5 forms a part of.

Without adequate B5, this energy-making process slows down. You might feel fatigued or notice your metabolism is sluggish. B5 also helps your body make acetylcholine, a neurotransmitter involved in muscle contraction and memory. In this way, B5 touches nearly every metabolic pathway your body runs, which is why it is found in virtually every food—your body needs it everywhere.

Food sources and how much you need daily

The recommended dietary allowance (RDA) for B5 is 5 mg per day for adult men and women. Pregnant people need 6 mg, and those breastfeeding need 7 mg. These amounts are set by the National Academies of Sciences, Engineering, and Medicine based on the intake that maintains normal function in healthy adults.

B5 appears in mushrooms, avocados, chicken, eggs, sunflower seeds, and whole grains. It is also added to many breakfast cereals and fortified grain products. A single medium avocado contains roughly 1.5 mg; three ounces of chicken breast contains about 0.7 mg; and one egg has roughly 0.6 mg. Because B5 is so widespread, people eating a varied diet almost always meet the RDA without thinking about it. Deficiency has been documented mainly in people with severe protein-energy malnutrition or rare genetic disorders affecting B5 metabolism.

B5 and skin health: what the research shows

One of the most common claims about B5 is that it improves acne and skin healing. This idea comes partly from the role B5 plays in making lipids (fats) that are essential to skin barrier function, and partly from small human studies showing mixed results. A 2014 study published in the journal Cutis found that people taking 2.2 grams of pantothenic acid daily for 12 weeks saw a reduction in acne lesions compared to placebo, but the study included only 41 people and was funded by a supplement manufacturer.

Larger, independent trials have not confirmed this effect. The evidence for B5 improving wound healing is similarly limited—most studies are in animals or in cells grown in a dish, not in living people. If you are considering B5 supplementation for skin, understand that the research is preliminary and that other factors (sleep, hydration, sun protection, and treating underlying skin conditions) have much stronger evidence behind them.

B5 for athletic performance and muscle recovery

Some athletes take B5 supplements hoping to improve endurance or speed recovery. The theory is sound: since B5 is central to energy production, more of it might mean more energy available during exercise. However, studies in people with normal B5 intake show that extra supplementation does not improve athletic performance or reduce muscle soreness after exercise.

A 2016 review in the Journal of the International Society of Sports Nutrition found no consistent evidence that pantothenic acid supplementation enhances exercise performance in people who are not deficient. If you are an athlete eating enough calories and a varied diet, you are almost certainly getting enough B5 already. Supplementing beyond that does not appear to provide an edge.

B5 supplements: forms, dosing, and safety

B5 supplements come in two main forms: pantothenic acid (the free form) and panthenol (a precursor your body converts to pantothenic acid). Pantothenic acid is more common in oral supplements; panthenol is often used in topical skin products. Oral supplements typically range from 500 mg to 2,000 mg per dose, far above the 5 mg RDA.

Because B5 is water-soluble, your body excretes excess amounts in urine rather than storing them. This means toxicity from B5 is extremely unlikely, even at high doses. The National Academies have not set an upper limit for B5 intake because no adverse effects have been documented even at very high levels. Some people report mild side effects like nausea or digestive upset at very high doses (above 10 grams daily), but these are rare and reversible.

If you are considering B5 supplementation, talk with your doctor or a registered dietitian about whether it makes sense for your situation. If you have a specific health goal—like managing acne or improving athletic performance—they can help you weigh the limited evidence and explore other approaches with stronger support.

B5 deficiency: how it happens and what it looks like

True B5 deficiency is so rare that it does not have a common name in clinical practice. It has been documented in people with severe malnutrition, in those taking certain medications that interfere with B5 absorption, and in people with genetic disorders affecting B5 metabolism. Symptoms, when they occur, include fatigue, numbness or tingling in the hands and feet, muscle weakness, and mood changes.

If you are eating a normal diet with a variety of foods, your risk of deficiency is essentially zero. If you have a condition affecting nutrient absorption—such as Crohn's disease, celiac disease, or cystic fibrosis—or if you are taking medications like isoniazid (used for tuberculosis), talk with your healthcare provider about whether B5 monitoring or supplementation is appropriate for you.

Frequently Asked Questions

Can I get too much B5 from food?

No. Because B5 is water-soluble and found in moderate amounts across many foods, you cannot overdose on it through diet alone. Your body excretes excess amounts in urine.

Does B5 help with stress or anxiety?

B5 is involved in making stress hormones like cortisol, so some people believe more B5 might help manage stress. However, no human studies show that supplementing B5 reduces anxiety or improves stress resilience in people with normal intake. If stress is affecting your health, talk with a healthcare provider about evidence-based approaches.

Is panthenol in skin creams the same as taking B5 supplements?

Panthenol is a form of B5 that skin products use because it absorbs into skin and may help with hydration and barrier repair. Topical panthenol and oral B5 supplements work in different ways and on different tissues, so they are not interchangeable.

Do I need a B5 supplement if I take a multivitamin?

Most multivitamins contain 5 to 10 mg of B5, which meets or exceeds the RDA. Taking an additional B5 supplement on top of a multivitamin is unnecessary unless your doctor recommends it for a specific reason.

What foods have the most B5?

Mushrooms, avocados, chicken, eggs, sunflower seeds, and whole grains are among the richest sources. Fortified cereals and grain products also contribute significantly. Eating a variety of these foods throughout the week easily covers your daily need.