What is vitamin A, vitamin B, vitamin C, vitamin D, vitamin E, and vitamin K?

In the pharmaceutical industry, vitamins are categorized into two groups: Fat-Soluble (A, D, E, K) and Water-Soluble (B-complex, C). As a pharmacist and manufacturer, I view these not just as nutrients, but as critical active ingredients with specific chemical stabilities and therapeutic windows.

At your WHO-GMP facility in Mumbai, managing these vitamins requires distinct manufacturing strategies—especially regarding their sensitivity to light, heat, and moisture.

1. Fat-Soluble Vitamins (A, D, E, K)

These are stored in the body’s fatty tissue and liver. They require fat for optimal absorption.

2. Water-Soluble Vitamins (B-complex, C)

These are not stored in the body and must be replenished regularly. Excess amounts are usually excreted via the kidneys.

The Vitamin B Complex (Neuro-Metabolic Support)

  • B1 (Thiamine): Energy spark for the heart and brain. Treats Beriberi and nerve pain.

  • B2 (Riboflavin): Cellular respiration and the “yellow” color factor in B-complex products.

  • B3 (Niacin/Niacinamide): DNA repair and skin health; also used for lipid management.

  • B6 (Pyridoxine): Neurotransmitter synthesis (mood) and morning sickness management.

  • B9 (Folic Acid): Crucial for DNA synthesis and preventing fetal neural tube defects.

  • B12 (Cobalamin): Myelin sheath formation (nerve shielding) and preventing anemia.

Vitamin C (Ascorbic Acid): The “Collagen Catalyst”

  • Primary Use: Essential for collagen formation (skin/vessel strength), iron absorption, and immune function.

  • Technical Fact: Humans cannot synthesize Vitamin C; it is highly unstable and degrades quickly when exposed to heat or air.

The Manufacturer’s “Technical Warning”

  • Toxicity Risk: Fat-soluble vitamins (especially A and D) can accumulate to toxic levels. For example, excessive Vitamin A can ironically trigger hair loss and liver stress.

  • Cofactor Synergy: Vitamin D cannot be properly activated without Magnesium, and Vitamin A often works better for night blindness when taken with Zinc.

  • Absorption Logic: Advise patients that taking Vitamin D with a fat-containing meal can increase its absorption by up to 32%.

The Manufacturer’s Perspective: Technical & Export

  • The “Neuro-Care” USP: On your marketplace, market the B1+B6+B12 combination as your flagship for diabetic neuropathy—a massive global market.

  • Stability for Export: Vitamins are highly sensitive. Utilizing Alu-Alu blister packaging is essential for maintaining a 36-month shelf life in Zone IVb tropical regions.

  • Dossier Support: We provide full CTD/eCTD Dossiers for both single-ingredient and multi-vitamin formulations to support your firm’s registration in international tenders.

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