Pantothenic acid

Vitamin B5; a water-soluble B-vitamin needed to make coenzyme A (CoA) for energy and fat metabolism.

Should I eat Pantothenic acid?

An essential vitamin added at tiny amounts to help you meet daily needs, pantothenic acid is safe and well tolerated in foods. Skip megadose supplements unless advised by a clinician.

Summary

Pantothenic acid (vitamin B5) helps your body turn food into energy and manage fats by building coenzyme A. The Daily Value is 5 mg, which most people can reach through a normal diet and fortified foods; needs rise slightly in pregnancy and breastfeeding. Safety reviews find low toxicity at nutritional intakes, and the common fortification form, calcium pantothenate, is purified and recognized as GRAS. Digestive symptoms have been reported only with very high gram‑level supplements, and theoretical competition with biotin occurs only at extreme doses. For most consumers, B5 in fortified foods is a simple way to cover a small but important nutrient need.

Key Research Points

Low toxicity; no set upper limit

Adult needs are about 5 mg/day, and no Tolerable Upper Intake Level is set because toxicity at normal intakes is low; the common form (calcium pantothenate) is affirmed GRAS for food use.

Megadose supplements can upset your gut

Very high, gram-level doses have occasionally caused diarrhea; fortified foods usually add only about 5–10 mg per serving, far below those amounts.

Very high doses may compete with biotin

Pantothenic acid and biotin share the same intestinal transporter (SMVT), so extremely high doses could compete for absorption; this is unlikely at normal intakes.

Overview

What is it?

Source: Plants and animals; synthetic vitamin

Method: Chemical synthesis and salt formation

Processing Level: 8 / 10

Why is it used?

Purpose: Provides vitamin B5 for nutrition fortification.

Commonly found in: multivitamins; sports bars; meal shakes; energy drinks; fortified snacks

Why manufacturers choose it: Accurate, stable, and inexpensive source of B5.

Origin

Discovered in the 1930s, pantothenic acid gets its name from the Greek “pantos” (everywhere) because it’s found across plants and animals. In foods it occurs as part of coenzyme A and acyl carrier proteins; for supplements and fortification it’s most often added as calcium D-pantothenate or D-panthenol.

Process: Chemical synthesis and salt formation

Steps

1. Synthesize precursor: Industrial synthesis produces pantolactone from isobutyraldehyde and formaldehyde.

2. Condense with β-alanine: Pantolactone (or related intermediates) is coupled with β-alanine to form D-pantothenic acid.

3. Neutralize: Converted to stable food-grade salts (e.g., calcium D-pantothenate) or to D-panthenol for use.

4. Purify & dry: Crystallization/filtration and drying to pharmacopeial/food specs.

Chemicals

Isobutyraldehyde

Formaldehyde

β-alanine

Research & Safety

Potential Concerns

For most people, pantothenic acid in foods and fortified products is very safe. Problems show up mainly with megadose supplements, where gram‑level intakes have been linked with diarrhea. Pantothenic acid and biotin use the same intestinal transporter, so very high doses of either could, in theory, reduce absorption of the other; this is not expected at normal intakes. The vitamin used in fortification is made synthetically (often via a process that uses formaldehyde) but the finished calcium pantothenate is purified and recognized as GRAS by the FDA.

Potential Benefits

Vitamin B5 helps release energy from carbohydrates, fats, and proteins by forming coenzyme A. It also supports fatty acid synthesis and breakdown, which influences how your body makes and uses fats. The Daily Value is 5 mg, and needs rise to 6 mg in pregnancy and 7 mg when breastfeeding. Fortified foods and multivitamins help cover these needs when diets are limited.

Digestive Effects

At typical fortification levels (about 5–10 mg per serving), digestive effects are not expected. Some people taking very high‑dose B‑complex or standalone B5 supplements report loose stools. If you notice this, lower the dose or split it across the day. Seek medical advice if symptoms persist, as many factors can cause diarrhea.

Limit Consumption

Adult guidance targets about 5 mg/day; pregnancy needs are 6 mg/day and lactation 7 mg/day. Infant formulas are allowed to include pantothenate to meet infant needs under federal regulations. People taking very high‑dose biotin (for hair or nail supplements) may wish to avoid simultaneous megadose B5 due to shared transport; consult a clinician if using high doses. No upper limit has been set because toxicity is low at usual intakes.

Fact Sheet

Regulatory Status

US FDA: Affirmed GRAS: calcium pantothenate (21 CFR §184.1212)

EU Status: Permitted vitamin; EFSA AI set at 5 mg/day (adults); no UL established

Codex INS: None (nutrient vitamin, not an INS-coded additive)

JECFA ADI: Not specified (nutrient; ADI not allocated)

ESG & Sustainability

Environmental Footprint: Used at milligram amounts; overall footprint per serving is minimal compared with macronutrient ingredients.

Sustainability: Synthetic production is consistent and low-mass; whole-food alternatives may have higher land/water impacts per mg B5.

Animal Welfare: Not animal-derived.

Carbon Footprint: Negligible at fortification doses relative to product baseline.

Allergens and Diet

Allergen Status: None

Diet Compatibility: Vegan, Vegetarian, Kosher, Halal, Gluten-free, Dairy-free, Low-FODMAP, Keto, Paleo, Non-GMO

Natural Alternatives

Sunflower seeds

Source: Sunflower kernels

Processing Level: Light

Common Uses: Bars, trail mixes, toppings

Replacement Benefit: Whole-food source of B5 plus healthy fats and minerals.

Why it's not used: Whole seeds can’t guarantee a specific mg amount per serving and add calories, fat, and flavor.

Avocado powder

Source: Dehydrated avocado pulp

Processing Level: Light

Common Uses: Smoothies, bars

Replacement Benefit: Whole-food matrix provides B5 along with potassium and fiber.

Why it's not used: Variable potency, cost, and flavor; difficult to hit label claims precisely.

Brewer’s yeast

Source: Inactivated Saccharomyces cerevisiae

Processing Level: Moderate

Common Uses: B-vitamin-rich whole-food add-in

Replacement Benefit: Delivers B-vitamins with protein, minerals, and fiber in a minimally processed form.

Why it's not used: Pure pantothenic acid is cheaper, neutral-tasting, and allows precise mg dosing without flavor/texture impact.

Citations

Daily Value on the Nutrition and Supplement Facts Labels

2024-03-05

U.S. Food & Drug Administration • U.S. FDA

Pantothenic Acid — Consumer Fact Sheet

2021-03-22

NIH Office of Dietary Supplements • NIH ODS

Pantothenic Acid | C9H17NO5 | CID 6613

2025-01-01

NIH/NLM • PubChem (NIH/NLM)

Dietary Reference Values for pantothenic acid

2014-02-24

EFSA NDA Panel • EFSA Journal

21 CFR §184.1212 Calcium pantothenate (PDF)

2011-04-01

U.S. FDA • Code of Federal Regulations

GRAS Notice GRN 690 (excerpt referencing Vitamin B5 GRAS)

2017-06-20

U.S. FDA • FDA GRAS Notice

The Sodium/Multivitamin Transporter (SMVT): a Multipotent Transporter

2015-07-01

Quick M., et al. • Pharmacol. Rev. (PMC)