Vitamin B5 (Pantothenic Acid)

Vitamin B5 (Pantothenic Acid) Benefits: Energy Metabolism, CoA Production & Cellular Function

What it is
Vitamin B5, also known as pantothenic acid, is a water-soluble B vitamin required for the synthesis of coenzyme A (CoA), a molecule central to cellular metabolism. It is widely distributed in foods including meat, eggs, whole grains, avocados, and legumes—reflected in its name, derived from the Greek pantothen, meaning “from everywhere” [1].

Pantothenic acid is essential for energy metabolism and the synthesis of key biological molecules, including fatty acids, steroid hormones, and neurotransmitters.

How it works in the body
Pantothenic acid is incorporated into coenzyme A (CoA), which plays a central role in cellular energy production. CoA is required for the breakdown of carbohydrates, fats, and proteins, enabling the generation of ATP through mitochondrial respiration [2].

It is also essential for the formation of acetyl-CoA, a key metabolic intermediate involved in energy production, fatty acid synthesis, and cholesterol metabolism.

Beyond energy metabolism, CoA is involved in the synthesis of fatty acids, phospholipids, cholesterol, and steroid hormones, including cortisol. While vitamin B5 has historically been linked to “adrenal support,” its primary role is in broad metabolic and biosynthetic pathways rather than direct hormonal regulation [3].

Pantothenic acid also contributes to the synthesis of acetylcholine, a neurotransmitter involved in memory, focus, and nervous system signaling.

Primary benefits
• Supports energy metabolism and ATP production
• Supports synthesis of fatty acids and hormones
• Supports nervous system function (via acetylcholine)
• Supports overall cellular metabolism

Typical intake (RDA / AI)
• Adults: 5 mg/day (Adequate Intake, AI)

Typical supplemental range
5–50 mg daily for general support

Safety notes
Generally very safe due to its water-soluble nature. Very high doses may cause mild gastrointestinal discomfort.

Did you know?
Pantothenic acid is required to produce acetyl-CoA, one of the most central molecules in metabolism, linking carbohydrate, fat, and protein metabolism.

References

1. NIH Office of Dietary Supplements. Pantothenic Acid Fact Sheet for Health Professionals. Updated 2024

2. Leonardi R et al. Coenzyme A: back in action. Prog Lipid Res. 2005

3. Said HM. Pantothenic Acid. Handbook of Vitamins. 2014