| Where the guideline stands | Insufficient evidence to recommend either way |
| Availability | Over the counter |
| How long before you judge it | Unclear |
| Pregnancy | Discuss with your clinician. |
| Sources behind this page | 4, every one linked at the bottom |
What it is
Pantothenic acid is vitamin B5, a water-soluble vitamin and the precursor of coenzyme A, which the body uses throughout fatty-acid metabolism. The adequate intake for adults is 5 mg a day, 6 mg in pregnancy and 7 mg while breastfeeding. Deficiency is essentially a non-issue: the NIH Office of Dietary Supplements notes that because some pantothenic acid is present in almost all foods, deficiency is rare except in people with severe malnutrition. Acne supplements do not sell it at those amounts. They sell it by the gram, on the reasoning that flooding the body with the coenzyme A precursor changes how skin handles fat and so reduces sebum. That reasoning is a proposal, not a demonstrated mechanism.
What the evidence actually shows
The guideline’s complementary and alternative therapies section states: “Available evidence is insufficient to develop a recommendation on the use of topical tea tree oil, topical green tea, topical witch hazel, oral pantothenic acid, oral or topical zinc, oral or topical niacinamide for acne treatment.” That is the work group saying it could not decide either way, not a recommendation against. The guideline recommends against exactly one thing, pneumatic broadband light added to adapalene 0.3%, and pantothenic acid is not it.
The study behind the supplement industry’s claims is Yang and colleagues, a randomised, double-blind, placebo-controlled trial published in Dermatology and Therapy in 2014 (4:93-101). Fifty-one people were screened, 48 randomised 1:1, and 41 were evaluable. Participants took four tablets a day, two twice daily with food, containing 2.2 g of pantothenic acid, for 12 weeks. Total facial lesion count fell significantly against placebo (P = 0.0197); non-inflammatory lesions also fell (P = 0.0162); inflammatory lesions and quality-of-life scores were also reported as significantly better. The paper states lesion count in the study agent versus placebo group was reduced by 68.21%.
That headline number does a lot of work in marketing copy, so the qualifiers matter. The study agent was Pantothen, and sponsorship was provided by its manufacturer, Avilan Marketing LLC. The product is described as a pantothenic acid-based supplement, and the paper does not enumerate its other ingredients or publish the certificate of analysis, so the trial tested a proprietary blend, not pantothenic acid on its own. Seven of 48 randomised were not evaluable, and per-arm numbers are not given. The authors themselves list the short duration, the fact that the study was powered only for total lesions, no data on durability, and the possibility that milder non-inflammatory lesions resolve by chance. Their conclusion was that further randomised, placebo-controlled studies are warranted. One small industry-funded trial of a blend is precisely the evidence base that produces an insufficient-evidence finding.
How it is actually used
There is no dose to recommend, because no dose has been established for acne. If you want to understand what is actually being sold: the trial dose was 2.2 g a day, roughly four hundred times the 5 mg adequate intake, taken as two tablets twice daily with food for 12 weeks. Twelve weeks is also the shortest honest window in which to judge it, which is long enough that most people will have changed something else in the meantime. Nothing in the guideline supports using it in place of treatments that do carry recommendations: benzoyl peroxide, topical retinoids, topical antibiotics and the fixed-dose combinations of those are strongly recommended. Note also that topical dexpanthenol, a B5 derivative used for dry irritated skin, is a different product doing a different job.
Safety and who should avoid it
Pantothenic acid is unusually benign at high intakes. No tolerable upper intake level has been set, because the Food and Nutrition Board found no reports of pantothenic acid toxicity in humans at high intakes. Some people taking large doses, on the order of 10 g a day, develop mild diarrhoea and gastrointestinal distress, by an unknown mechanism. The honest unknowns: gram doses have not been studied beyond about 12 weeks, so long-term effects are untested; interactions are not well characterised; and supplements are not regulated like drugs, so what is in the bottle may not match the label. In pregnancy the adequate intake is 6 mg a day and gram doses have not been tested, so discuss it with your clinician.
Commonly repeated: a randomised controlled trial proved that vitamin B5 clears acne, cutting lesions by 68%. What the evidence actually shows: the trial exists and was randomised, double-blind and placebo-controlled, but it randomised 48 people with 41 evaluable, ran 12 weeks, was sponsored by the manufacturer of the product tested, and tested a branded pantothenic acid-based supplement whose other ingredients the paper does not list. It is not a trial of pantothenic acid by itself, and its own authors called for further randomised, placebo-controlled studies.
Sources
- Reynolds RV, Yeung H, Cheng CE, et al. Guidelines of care for the management of acne vulgaris. J Am Acad Dermatol 2024;90(5):1006.e1-1006.e30
- Yang M, Moclair B, Hatcher V, et al. A randomized, double-blind, placebo-controlled study of a novel pantothenic acid-based dietary supplement in subjects with mild to moderate facial acne. Dermatol Ther (Heidelb) 2014;4:93-101
- NIH Office of Dietary Supplements. Pantothenic Acid – Fact Sheet for Health Professionals
- Sanvictores T, Chauhan S. Vitamin B5 (Pantothenic Acid). StatPearls, NCBI Bookshelf
Keep reading
See where this sits against every other acne treatment on the acne treatment evidence map, or check how it combines with another ingredient in the ingredient combination checker. For the guideline’s own wording on this, see the 2024 AAD guideline, recommendation by recommendation.
Not medical advice
This page reports what the published evidence says about a treatment. It is not a treatment plan and it cannot account for your skin, your other medications or your medical history. Nothing here has been reviewed by a clinician; see our editorial policy for what that means. Talk to a clinician before starting or stopping any prescription treatment.
