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Vitamin B5 (Pantothenic Acid) supplement
Water-Soluble Vitamin

Vitamin B5 (Pantothenic Acid): Benefits, Dosage, Forms & Research

Water-Soluble Vitamin

This content is for informational purposes only and does not constitute medical advice. Consult your healthcare provider before starting any supplement. Full disclaimer

TL;DR — Quick Answer

Vitamin B5 is essential for CoA synthesis, energy metabolism, and hormone production. Found in virtually all foods, deficiency is rare. Pantethine (600-900 mg) may modestly lower cholesterol, and topical panthenol supports wound healing and skin hydration.

Key Facts

What it is
A water-soluble B vitamin essential for coenzyme A synthesis and fat metabolism
Primary benefits
  • Required for coenzyme A and energy metabolism
  • Supports adrenal function and stress hormone production
  • Pantethine may lower LDL cholesterol and triglycerides
  • Topical panthenol promotes wound healing and skin hydration
Typical dosage
5 mg daily (AI); 600-900 mg pantethine for cholesterol
Evidence level
Moderate
Safety profile
Generally Safe

What the Research Says

Pantothenic acid's role in CoA synthesis is well-established biochemistry. For lipid management, Rumberger et al. (2011) conducted a multi-center RCT showing pantethine 900 mg/day significantly reduced total cholesterol by 11%, LDL by 12%, and triglycerides by 17% in low to moderate cardiovascular risk subjects. Proksch and de Bony (2006) demonstrated that topical dexpanthenol accelerated skin barrier recovery and reduced transepidermal water loss, supporting its widespread dermatological use. The acne claims associated with high-dose B5 (Dr. Leung's 1997 hypothesis) remain poorly supported by rigorous clinical trials.

Benefits of Vitamin B5 (Pantothenic Acid)

  • Energy metabolism — B5 is a structural component of coenzyme A (CoA), which participates in over 100 metabolic reactions including the citric acid cycle, fatty acid oxidation, and acetylcholine synthesis
  • Lipid management — pantethine at 600-900 mg/day reduced total cholesterol by 11%, LDL by 12%, and triglycerides by 17% in a 2014 multi-center RCT by Rumberger et al. (n=120)
  • Wound healing — dexpanthenol (topical B5) accelerates wound healing by stimulating fibroblast proliferation and epithelial cell migration; widely used in post-surgical and dermatological care
  • Adrenal and stress support — B5 is concentrated in the adrenal glands and is necessary for cortisol and other corticosteroid synthesis; sometimes called the "anti-stress vitamin"
Did you know?

Pantothenic acid's role in CoA synthesis is well-established biochemistry.

Forms of Vitamin B5 (Pantothenic Acid)

FormBioavailabilityBest For
Calcium D-PantothenateHighGeneral supplementation — most common and stable supplement form
PantethineHighCholesterol support — the biologically active form of B5, studied for lipid-lowering effects
Dexpanthenol (Panthenol)TopicalSkin healing and hydration — used topically, converts to pantothenic acid in the skin

Dosage Recommendations

General recommendation: 5 mg daily as Adequate Intake (AI); therapeutic doses of pantethine range from 600-900 mg daily

Timing: With meals; pantethine doses divided three times daily • Take with food for best absorption.

Dosage by Condition

ConditionRecommended DoseEvidence
General health5-10 mg daily (usually obtained from diet)Strong
Cholesterol support300 mg pantethine three times daily (900 mg total)Moderate
Acne (high dose)2-10 g daily pantothenic acid (limited evidence)Preliminary

Upper limit: No established upper limit; diarrhea and GI distress reported above 10 g/day

Side Effects and Safety

Safety profile: Generally Safe

Potential Side Effects

  • Generally very well tolerated at standard doses
  • Diarrhea and gastrointestinal distress at very high doses (>10 g/day)
  • Contact dermatitis reported rarely with topical dexpanthenol
  • Possible nausea at high oral doses

Drug & Supplement Interactions

  • May enhance the effects of cholinesterase inhibitors (donepezil, rivastigmine)
  • High doses may reduce absorption of biotin due to shared intestinal transport
  • Tetracycline antibiotics — no significant known interactions
Check Vitamin B5 (Pantothenic Acid) interactions with other supplements →
BenefitsDosage GuideSide EffectsTypes & FormsResearchFAQ

Related Conditions

Energy & VitalitySkin HealthStress

Related Supplements

Vitamin B12B-ComplexCoenzyme Q10 (CoQ10)

Frequently Asked Questions

Do I need to supplement with vitamin B5?

Most people do not need B5 supplements because pantothenic acid is found in virtually all plant and animal foods — the name literally means "from everywhere." Deficiency is extremely rare in developed countries. Supplementation is primarily relevant for pantethine (cholesterol support) or topical panthenol (skin care), not for preventing deficiency.

Does pantethine really lower cholesterol?

Clinical trials show pantethine at 600-900 mg/day modestly reduces total cholesterol (11%), LDL (12%), and triglycerides (17%). While these effects are statistically significant, they are smaller than statin medications. Pantethine may be a reasonable adjunct for mild dyslipidemia or for those who cannot tolerate statins, but should not replace statins when medically indicated.

Does high-dose B5 help with acne?

A 1997 hypothesis by Dr. Lit-Hung Leung proposed that megadoses (5-10 g/day) of pantothenic acid reduce acne by improving fat metabolism in skin. Some anecdotal reports support this, but rigorous RCTs are lacking. At these extreme doses, digestive side effects are common. More effective evidence-based acne treatments exist, including topical niacinamide (vitamin B3) and retinoids.

References

  1. (). Pantethine, a derivative of vitamin B5 used as a nutritional supplement, favorably alters low-density lipoprotein cholesterol metabolism in low- to moderate-cardiovascular risk North American subjects. Nutrition Research. DOI
  2. (). Topical use of dexpanthenol: a 70th anniversary article. Journal of Dermatological Treatment. DOI
  3. (). Pantothenic acid deficiency as the pathogenesis of acne vulgaris. Medical Hypotheses. DOI