How much pantothenic acid, vitamin B5, you need daily

Short answer: Most adults need 5 mg of pantothenic acid per day, according to the NIH Office of Dietary Supplements. This amount is easy to meet through a varied diet, and deficiency is rare in healthy people who eat regularly.

What is pantothenic acid?

Pantothenic acid is a water-soluble B vitamin found in almost every food group. Its name comes from the Greek word pantothen, meaning "from everywhere," which reflects how widely it is distributed in the food supply. Because the body cannot make it on its own, you need to obtain it through food or, when necessary, supplements.

What does vitamin B5 do in the body?

Pantothenic acid serves as the building block for coenzyme A, commonly abbreviated as CoA. According to the NIH Office of Dietary Supplements, coenzyme A is central to energy metabolism and is involved in hundreds of enzymatic reactions throughout the body. Specifically, the NIH notes three core physiological roles:

• It supports the synthesis and breakdown of fatty acids.
• It enables the transfer of acetyl and acyl groups in many anabolic and catabolic reactions, meaning it participates in both building and breaking down molecules.
• It is required to synthesize acyl carrier protein, which is also essential for fatty acid metabolism and energy production. The evidence for these fundamental biochemical roles is graded as strong by the NIH.

In practical terms, coenzyme A is needed for your cells to extract energy from carbohydrates, fats, and proteins. Without adequate pantothenic acid, these processes cannot run efficiently. That said, because deficiency is so uncommon, most people never experience a noticeable disruption to these functions.

How much pantothenic acid do you need each day?

The NIH Office of Dietary Supplements sets the daily target for pantothenic acid as an Adequate Intake, or AI, rather than a Recommended Dietary Allowance. An AI is used when there is not enough data to calculate a precise RDA. The current values are:

• Adults 19 years and older: 5 mg per day
• Pregnant women: 6 mg per day
• Breastfeeding women: 7 mg per day
• Teenagers 14 to 18 years: 5 mg per day
• Children 9 to 13 years: 4 mg per day
• Children 4 to 8 years: 3 mg per day
• Children 1 to 3 years: 2 mg per day
• Infants 7 to 12 months: 1.8 mg per day
• Infants 0 to 6 months: 1.7 mg per day

These figures come directly from the NIH Office of Dietary Supplements and the National Academies of Sciences, Engineering, and Medicine Dietary Reference Intakes report. For personalized dosing guidance, speak with your clinician or pharmacist, as individual needs can vary based on health status, medications, and other factors.

Food sources of pantothenic acid

Because pantothenic acid is present in nearly all plant and animal foods, meeting the 5 mg daily target through diet alone is achievable for most people. Good sources include beef, chicken, organ meats such as liver, fish, eggs, milk, yogurt, legumes, avocados, whole grains, mushrooms, and many vegetables. Processing and cooking can reduce the pantothenic acid content of foods, so a varied diet that includes minimally processed options is a reliable approach.

Is a Tolerable Upper Intake Level established?

No. The NIH Office of Dietary Supplements has not established a Tolerable Upper Intake Level for pantothenic acid because human toxicity has not been reported, even at high intakes. Very large doses of around 10 grams per day may cause mild diarrhea and gastrointestinal upset, but this level is far above what any standard supplement provides. As with any supplement, it is important to discuss use with a health care provider, especially during pregnancy, lactation, or if you are managing a health condition.

What does the research say about pantothenic acid supplements?

It is important to note that supplements are not intended to diagnose, treat, cure or prevent any disease and these statements have not been evaluated by the FDA. With that context in mind, here is an honest summary of what the current evidence shows, using the same evidence grades reflected by the NIH:

Energy metabolism and coenzyme A synthesis (Strong evidence)

The role of pantothenic acid in synthesizing coenzyme A and acyl carrier protein is well established. These functions are essential for fatty acid metabolism and energy production. This is not a claim about supplementation benefits but a description of the vitamin's known biochemical function.

Blood lipid levels (Insufficient evidence)

Some research has examined whether pantothenic acid supplementation lowers blood lipids in people with hyperlipidemia. The NIH grades this evidence as insufficient, meaning the current data does not support drawing firm conclusions.

Pantethine and triglycerides or cholesterol (Limited evidence)

Pantethine, a related form of the vitamin, has been studied in adults with hyperlipidemia. The NIH grades this evidence as limited, indicating some preliminary findings exist but that more rigorous research is needed before any conclusions can be drawn.

PKAN, a rare genetic condition (Insufficient evidence)

PKAN, or pantothenate kinase-associated neurodegeneration, is caused by mutations in the PANK2 gene. Some research has looked at whether pantothenate supplementation benefits people with this condition. The NIH grades this evidence as insufficient at this time.

Does pantothenic acid interact with medications?

The NIH Office of Dietary Supplements states that pantothenic acid is not known to have any clinically relevant interactions with medications. However, this does not mean interactions are impossible for every individual. Always talk to a doctor or pharmacist before combining any supplement with prescription or over-the-counter medications, particularly if you have an existing health condition.

Do most people need a supplement?

For most healthy adults eating a varied diet, pantothenic acid deficiency is rare and supplementation is generally not necessary to meet the 5 mg daily Adequate Intake. Supplements may be considered in specific circumstances, such as during pregnancy or breastfeeding when needs are higher, or when dietary intake is consistently poor. A clinician is the right person to help you determine whether a supplement is appropriate for your situation.

Bottom line

Pantothenic acid plays a well-established role in energy metabolism through its function as a precursor to coenzyme A. The daily target for most adults is 5 mg, a level that a varied diet typically provides without difficulty. No upper intake limit has been set, and the vitamin has a strong safety record. Evidence for supplementation beyond correcting a deficiency remains limited or insufficient for most health claims. If you have questions about your personal vitamin B5 status or whether a supplement is right for you, consult a qualified health care provider.

Sources

• NIH Office of Dietary Supplements, Pantothenic Acid Fact Sheet for Health Professionals: https://ods.od.nih.gov/factsheets/PantothenicAcid-HealthProfessional/
• NIH Office of Dietary Supplements, Pantothenic Acid Fact Sheet for Consumers: https://ods.od.nih.gov/factsheets/PantothenicAcid-Consumer/
• National Academies of Sciences, Engineering, and Medicine, Dietary Reference Intakes for Thiamin, Riboflavin, Niacin, Vitamin B6, Folate, Vitamin B12, Pantothenic Acid, Biotin, and Choline: https://nap.nationalacademies.org/catalog/6015/