B5 (Pantothenic Acid)

What is B5 (Pantothenic Acid)?

Pantothenic acid (vitamin B5) is an essential B vitamin your body cannot make on its own, so it must come from food or supplements every day. Its name comes from the Greek word 'pantothen,' meaning 'from everywhere' — and true to that name, it's found in nearly all whole foods. It's a water-soluble vitamin, meaning your body doesn't store large amounts, so steady daily intake matters.

How does B5 (Pantothenic Acid) work?

B5's most important job is helping your body build coenzyme A (CoA), a molecule that acts like a master switch for energy metabolism — it's required to break down carbohydrates, fats, and proteins into fuel your cells can actually use. B5 also supports the production of steroid hormones (including cortisol, your stress hormone), red blood cells, and the fatty acids that keep your skin barrier healthy. Think of it as a behind-the-scenes worker that keeps dozens of your body's key processes running smoothly.

What forms does B5 (Pantothenic Acid) come in?

Oral supplements are typically sold as calcium pantothenate in capsule or tablet form, often as part of a B-complex. Standalone B5 supplements commonly range from 500 mg to 1,000 mg. Topical dexpanthenol (panthenol) is available in creams, serums, and ointments for skin and wound care and is well-studied for those applications.

Where it comes from:

Pantothenic acid was identified and isolated in the 1930s by biochemist Roger J. Williams, who named it for its near-universal presence in foods. It was officially recognized as an essential human nutrient in the mid-20th century, and its topical form (dexpanthenol) has been used in wound care and dermatology for decades, particularly in Europe.

What does B5 (Pantothenic Acid) help with?

• Low energy and fatigue: B5 is at the center of how your body makes energy from food. Without enough of it, the metabolic pathway that converts carbs, fats, and proteins into cellular fuel slows down, leaving you feeling drained. Supplementing helps keep this process running efficiently, especially if your diet is lacking.
• Acne and oily skin: High-dose B5 supplementation has been studied as a way to reduce acne, possibly by improving how the skin metabolizes fats and reducing excess sebum production. Several clinical trials using pantothenic acid at doses of 2–10 g/day showed meaningful reductions in acne lesions, making this one of B5's most researched modern uses.
• Wound healing and skin repair: Topical dexpanthenol (the skin-active form of B5) is one of the most widely used wound-healing ingredients in dermatology. It speeds up skin cell regeneration, reduces inflammation, and helps maintain moisture — making it effective for minor wounds, burns, and post-procedure recovery.
• Stress and adrenal support: Your adrenal glands use B5 to produce cortisol and other stress-related hormones. During periods of high stress, demand for B5 increases. While frank deficiency is rare, many practitioners use B5 supplementation as part of adrenal support protocols to help the body manage stress hormones more effectively.
• High cholesterol and triglycerides: A modified form of B5 called pantethine (the active disulfide form) has been studied specifically for lowering LDL cholesterol and triglycerides while gently raising HDL. It works by influencing the CoA pathway involved in fat metabolism in the liver.
• Rheumatoid arthritis joint pain: Early research — particularly from the General Practitioner Research Group in the UK — found that people with rheumatoid arthritis tended to have lower blood levels of pantothenic acid, and that supplementation helped reduce morning stiffness and pain severity. The evidence is older but consistent.
• Dry or irritated skin (topical): Panthenol (topical B5) is a gold-standard humectant and skin-soothing ingredient in dermatology, clinically shown to improve skin hydration, reduce irritation, and strengthen the skin barrier. It's widely used in eczema care, post-laser treatment, and everyday moisturizing.
• Nutritional deficiency support: While outright B5 deficiency is uncommon in people eating varied diets, those with malabsorption conditions, eating disorders, or highly restrictive diets may fall short. Deficiency symptoms include fatigue, numbness and tingling in hands and feet, and poor wound healing.
• Post-surgery or injury recovery: Topical and oral B5 are both used to support recovery from surgery and injury. Dexpanthenol is routinely applied to surgical wounds in European clinical practice to promote faster, cleaner healing and reduce scar formation.

What can B5 (Pantothenic Acid) help prevent?

• Pantothenic acid deficiency (by meeting the daily requirement through food or supplementation)
• Skin barrier breakdown: topical panthenol is clinically studied to maintain and restore the skin's protective barrier

Which foods are rich in B5 (Pantothenic Acid)?

1. Chicken liver and beef liver: Organ meats are among the richest sources of pantothenic acid — a 3 oz serving of beef liver delivers roughly 8 mg, well above the daily requirement of 5 mg.
2. Sunflower seeds: One of the best plant-based sources, providing around 2 mg per ounce — easy to add to salads, yogurt, or snack mixes.
3. Mushrooms (especially shiitake and portobello): A standout vegetarian source — cooked shiitake mushrooms provide roughly 3–4 mg per cup, making them one of the richest plant foods for B5.
4. Salmon and tuna: Fatty fish are solid B5 sources, with a typical fillet delivering 1.5–2 mg, alongside omega-3s that complement B5's skin and inflammation benefits.
5. Avocado: One whole avocado provides roughly 2 mg of pantothenic acid — an easy, everyday whole-food source that also supports healthy fat metabolism alongside B5.

Practical Tips:

Pantothenic acid is heat-sensitive and water-soluble, so cooking methods matter — boiling or high-heat processing can destroy a significant portion of the B5 content. Eating foods raw or lightly cooked, and using cooking water where possible, helps preserve more of the vitamin.

What are the side effects of B5 (Pantothenic Acid)?

• Loose stools or diarrhea at very high doses (typically above 2–10 g/day)
• Mild nausea if taken on an empty stomach at higher doses
• Occasional stomach cramping at supplemental megadoses
• Topical panthenol: very rarely, mild contact dermatitis in sensitive individuals

Good to know:

Pantothenic acid is one of the safest vitamins — no tolerable upper intake level (UL) has been set because toxicity from food or supplements is essentially unheard of. Even doses of several grams per day are generally well-tolerated.

How much B5 (Pantothenic Acid) should you take?

• Recommended daily: Adequate Intake (AI): 5 mg/day for adults. Therapeutic doses for acne: 1–10 g/day (often divided). Pantethine for cholesterol: 600–1,200 mg/day in divided doses. Standard B-complex supplementation: 10–50 mg/day is typical and well within safe range.
• Best time of day: Morning or early afternoon — as a B vitamin involved in energy metabolism, taking it late in the day may interfere with sleep for sensitive individuals. With a B-complex, follow that product's timing.
• With or without food: Best taken with food to improve absorption and reduce any chance of stomach upset, especially at higher doses.
• Time to effect: Energy and general wellbeing: 2–4 weeks. Acne improvement: 8–12 weeks at therapeutic doses. Skin barrier (topical): 1–2 weeks. Cholesterol effects (pantethine): 8–16 weeks.
• How long to take it: For general nutritional support: suitable for ongoing daily use with no known need to cycle. For therapeutic acne protocols at high doses: continue for at least 12 weeks to assess response, then reassess with a practitioner. Pantethine for cholesterol: reassess lipid levels at 3–6 months.