What does the evidence show about Vitamin B5 (pantothenic acid)'s effects?

Read Off Label rates the evidence for Vitamin B5 (pantothenic acid) as Strong and the benefit magnitude as low, producing an overall grade of B+ (7.5/10). Deficiency essentially does not occur outside of starvation.

What safety findings are reported for Vitamin B5 (pantothenic acid)?

Vitamin B5 (pantothenic acid) has a low risk profile in the database. Low (GI upset at multi-gram doses; pantethine occasionally causes loose stools) Legal status: OTC.

What doses or routes are reported for Vitamin B5 (pantothenic acid)?

5 mg/day adequate intake; 600-900 mg/day pantethine for lipids; 1-10 g/day pantothenic acid for acne (off-label, weak data) This is context from studies, approved labeling, clinical practice, or documented use; it is not individualized guidance and does not establish safety.

Rankings / Essentials — Vitamins & Minerals

Vitamin B5 (pantothenic acid)

Essentials · Vitamin

Tier B+

Reviewed by Read Off Label · Last reviewed Jun 8, 2026 · How we grade

vitaminotc

7.5 / 10

Tier B+

Ev 8 Bn 2 Sf 9

Bottom line

Read Off Label grades Vitamin B5 (pantothenic acid) as B+ (7.5/10) based on strong evidence, low benefit magnitude, and a low-risk safety profile.

Deficiency essentially does not occur outside of starvation.

Studied, labeled, or reported-use context: 5 mg/day adequate intake; 600-900 mg/day pantethine for lipids; 1-10 g/day pantothenic acid for acne… — OTC; not individualized guidance.

What the evidence says

Deficiency essentially does not occur outside of starvation. Pantethine (the disulfide form) has the only mildly interesting clinical data — modest LDL/triglyceride reduction in small trials. The acne mega-dose protocol is internet folklore with thin evidence.

Mechanism

Precursor to coenzyme A (CoA) and acyl carrier protein — required for fatty acid synthesis/oxidation, TCA cycle, steroid and acetylcholine synthesis

Studied, labeled, or reported dose & route

5 mg/day adequate intake; 600-900 mg/day pantethine for lipids; 1-10 g/day pantothenic acid for acne (off-label, weak data)

This records doses and routes described in studies, approved labeling, clinical practice, or documented use. It is not individualized guidance and does not establish safety; context changes with indication, formulation, health history, monitoring, and other medicines.

Citations

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Common questions

What does the evidence show about Vitamin B5 (pantothenic acid)'s effects?: Read Off Label rates the evidence for Vitamin B5 (pantothenic acid) as Strong and the benefit magnitude as low, producing an overall grade of B+ (7.5/10). Deficiency essentially does not occur outside of starvation.
What safety findings are reported for Vitamin B5 (pantothenic acid)?: Vitamin B5 (pantothenic acid) has a low risk profile in the database. Low (GI upset at multi-gram doses; pantethine occasionally causes loose stools) Legal status: OTC.
What doses or routes are reported for Vitamin B5 (pantothenic acid)?: 5 mg/day adequate intake; 600-900 mg/day pantethine for lipids; 1-10 g/day pantothenic acid for acne (off-label, weak data) This is context from studies, approved labeling, clinical practice, or documented use; it is not individualized guidance and does not establish safety.
How does Vitamin B5 (pantothenic acid) work?: Precursor to coenzyme A (CoA) and acyl carrier protein — required for fatty acid synthesis/oxidation, TCA cycle, steroid and acetylcholine synthesis

This is an independent synthesis of published research by a non-clinician. Scores are opinions supported by citations, not prescriptions. See the full disclaimer and methodology for how this score was produced and what it does and doesn't mean.