Limited evidenceVitamins & minerals

Vitamin B5 (Pantothenic Acid)

Pantothenic acid deficiency essentially does not occur in people who eat food, and supplementing it has no demonstrated benefit. The derivative pantethine has modest lipid data and pantothenic acid has one small acne trial — both are thin.

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What the science says

Improves acne Limited evidence
A single 12-week randomised, double-blind, placebo-controlled trial in 48 adults with mild-to-moderate facial acne found a pantothenic acid-based supplement reduced total lesion count versus placebo. One small industry-linked trial of a proprietary blend is not a foundation for a recommendation, and it has not been independently replicated.
Lowers LDL cholesterol (as pantethine) Limited evidence
A triple-blinded placebo- and diet-controlled trial of pantethine 600-900 mg/day in low-to-moderate cardiovascular risk adults found LDL-C reductions of roughly 4-11% over 16 weeks. The effect is real but far smaller than any statin, and no outcome data exist. Note that pantethine is not plain pantothenic acid — the ordinary B5 in your multivitamin does not do this.
Improves energy, adrenal function, or stress resilience Limited evidence
'Adrenal support' marketing rests on B5's role in coenzyme A synthesis and cortisol production, not on human trials. No controlled study shows pantothenic acid supplementation improves fatigue, stress response, or athletic performance in people eating a normal diet. Deficiency is so rare it has mostly been produced experimentally using antagonists.

Dosage & safety

Studied doseAdequate intake is 5 mg/day for adults and is easily met from meat, eggs, whole grains, avocado and legumes. Typical supplements provide 10-500 mg/day with no evidence that more is better. The acne trial used a proprietary pantothenic acid blend; older uncontrolled acne reports used doses up to 10 g/day, which is not supported. Pantethine lipid trials used 600-900 mg/day for 8-16 weeks.

SafetyVery well tolerated with no established tolerable upper intake level. Doses in the multi-gram range can cause diarrhoea and gastrointestinal upset. Pantethine may cause nausea and, rarely, mild bleeding tendency at high doses — theoretical additive risk with anticoagulants and antiplatelets. Isolated case reports link very high pantothenic acid intake to eosinophilic pleuropericardial effusion. No sport-related restrictions. If you are taking gram-level B5 for acne, be aware you are extrapolating well beyond the data.

How to take it

TimingTiming does not matter.

With food?With food; multi-gram doses commonly cause diarrhoea and food helps a little.

Worth knowingDeficiency is essentially unheard of on a normal diet — if you are taking gram-level B5 for acne you are extrapolating far beyond the evidence.

Frequently asked questions

Does vitamin B5 work for acne?

The evidence is limited: one 12-week trial in 48 adults found a proprietary pantothenic acid blend reduced lesion count, but it was small, industry-linked and never replicated. Gram doses of vitamin B5 for acne go far beyond the data.

Does pantethine lower cholesterol?

Modestly, with limited evidence: a controlled trial of pantethine at 600–900 mg/day found LDL fell by roughly 4–11% over 16 weeks, far less than any statin. Pantethine is a derivative; the plain vitamin B5 in a multivitamin does not do this.

Does vitamin B5 support the adrenals or reduce stress?

There are no human trials behind that claim, so the evidence is limited. No controlled study shows pantothenic acid (vitamin B5) improves fatigue, stress response or performance in people eating a normal diet.

Is vitamin B5 worth taking?

Almost certainly not. The adequate intake of vitamin B5 is 5 mg/day, easily met from meat, eggs, whole grains, avocado and legumes, and pantothenic acid deficiency is essentially unheard of on a normal diet.

Scientific references

A randomized, double-blind, placebo-controlled study of a novel pantothenic acid-based dietary supplement in subjects with mild to moderate facial acne
Yang M et al. — Dermatol Ther (Heidelb), 2014
Pantethine, a derivative of vitamin B5, favorably alters total, LDL and non-HDL cholesterol in low to moderate cardiovascular risk subjects eligible for statin therapy: a triple-blinded placebo and diet-controlled investigation
Evans M et al. — Vasc Health Risk Manag, 2014

Where to buy

Jarrow Formulas, Pantothenic Acid B5, 100 Veggie Caps

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