API Nicotinic acid

Nicotinic acid More Info

Nicotinic acid, also widely known as niacin or vitamin B3, is an essential water-soluble B-vitamin that plays critical roles in human metabolism, cellular function, and overall health. It is one of the two primary active forms of vitamin B3, alongside nicotinamide.

1. Basic Properties

Chemical Formula: C₆H₅NO₂

Molecular Weight: 123.11 g/mol

Physical Characteristics: It appears as a white to off-white crystalline powder with a slight acidic taste. It is soluble in water and ethanol, and stable under normal storage conditions, but may decompose when exposed to strong light or high temperatures for extended periods.

Natural Sources: Abundant in foods such as meat (especially liver), fish, whole grains, legumes, nuts, and leafy green vegetables. It can also be synthesized industrially for pharmaceutical and nutritional supplement applications.

2. Key Biological Functions

Energy Metabolism: Nicotinic acid is a precursor to two crucial coenzymes—nicotinamide adenine dinucleotide (NAD) and nicotinamide adenine dinucleotide phosphate (NADP). These coenzymes are involved in hundreds of enzymatic reactions in the body, including the breakdown of carbohydrates, fats, and proteins to produce adenosine triphosphate (ATP), the body’s primary energy source.

Lipid Regulation: At therapeutic doses (higher than nutritional requirements), it can effectively lower low-density lipoprotein (LDL, "bad cholesterol") and triglyceride levels, while increasing high-density lipoprotein (HDL, "good cholesterol"). This makes it a valuable agent in managing dyslipidemia and reducing the risk of cardiovascular diseases.

Skin and Mucosa Health: It supports the maintenance of healthy skin, mucous membranes, and the nervous system. Deficiency can lead to pellagra, a condition characterized by the "four Ds": dermatitis, diarrhea, dementia, and potentially death if untreated.

Nervous System Support: It aids in maintaining proper nerve function and may contribute to cognitive health by supporting brain cell metabolism.

3. Industrial and Commercial Applications

Nutritional Supplements: Used in multivitamins, B-complex supplements, and standalone niacin products to meet daily dietary requirements.

Pharmaceuticals: Formulated into prescription medications for treating hyperlipidemia and cardiovascular disorders. Note that high-dose niacin may cause side effects such as flushing, itching, and gastrointestinal discomfort.

Feed Additives: Added to animal feed to ensure the nutritional needs of livestock and poultry, promoting growth and preventing vitamin B3 deficiency in animals.

4. Safety and Precautions

Recommended Daily Intake (RDI): For adults, the RDI is approximately 14–16 mg/day for nutritional maintenance. Therapeutic doses (often 500 mg/day or higher) should be taken under medical supervision.

Side Effects: High doses may cause cutaneous flushing (a temporary warm, red sensation on the skin), which is due to vasodilation. Sustained high-dose use may also lead to liver function abnormalities, so regular liver function monitoring is recommended.

Contraindications: Individuals with liver disease, gout, or peptic ulcers should consult a healthcare provider before using high-dose nicotinic acid supplements.