Vitamin B5 (Pantothenic Acid) — What Your Blood Test Result Means

The Universal Energy Vitamin

Vitamin B5 is part of coenzyme A (CoA)—one of the most important molecules in metabolism. CoA is involved in over 100 metabolic reactions including fatty acid synthesis, energy production, and hormone synthesis. B5 deficiency is extremely rare because it's found in virtually every food (the name comes from the Greek "pantos" meaning "everywhere").

What is Vitamin B5 (Pantothenic Acid)?

Pantothenic acid is a component of coenzyme A (CoA) and acyl carrier protein (ACP). Essential for fatty acid metabolism, citric acid cycle, steroid/hormone synthesis, and acetylcholine production. RDA: 5mg/day adults. Widely available in foods; clinical deficiency is nearly nonexistent.

↑ What High Vitamin B5 (Pantothenic Acid) Means

Not toxic. Excess excreted in urine. Very high doses (10+ g/day) may cause diarrhea.

Common symptoms:

No toxicity at normal supplemental doses · Very high doses: diarrhea

↓ What Low Vitamin B5 (Pantothenic Acid) Means

Extremely rare. Only seen in severe malnutrition or experimentally. Symptoms: fatigue, burning feet syndrome (paresthesia), GI disturbances, depression.

Common symptoms:

Burning feet syndrome (paresthesias in feet) · Fatigue, irritability · GI disturbances · Depression, insomnia

Why It Matters

When normal:

Essential for energy metabolism via CoA

Required for fatty acid synthesis and oxidation

Supports adrenal hormone production

Rarely deficient due to widespread food availability

Risks if abnormal:

Deficiency: extremely rare, only in severe malnutrition

No known toxicity from food or supplements

What Can Cause Abnormal Levels?

Severe Malnutrition

90% likely

The only realistic cause. B5 is in virtually every food.

Alcoholism

Combined malnutrition and malabsorption.

What You Can Do

Balanced diet provides more than adequate B5 (it's in everything)

Impact: Deficiency is essentially impossible with any reasonable diet \u00B7 Timeline: Ongoing

If lifestyle changes aren't enough:

If supplementing: 5-10mg/day in B-complex vitamin

Impact: Typically unnecessary but safe \u00B7 Timeline: Ongoing

Recommended retest: Rarely tested; only if severe malnutrition suspected

Medical Disclaimer: This information is for educational purposes only and is not a substitute for professional medical advice. Always consult your doctor for diagnosis and treatment.

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