Vitamin B6 is a kind of B vitamins, also known as anti-dermatitis vitamins, pyridoxine, widely distributed in food, is closely related to the metabolism of amino acids, amino acid decarboxylase, transaminase and other coenzymes. This is a water-soluble vitamin that is easily lost during cooking. The symptoms of animal lack of vitamin B6 are dermatitis, delirium, anemia, etc.; simple vitamin B6 deficiency is rare in humans. Vitamin B6 mainly acts on the body's blood, muscles, nerves, and skin. Functions include assisting in the discharge of nitrogenous wastes, the synthesis of antibodies, the manufacture of stomach acids in the digestive system, the use of fats and proteins (especially when weight loss is needed), and the maintenance of sodium/potassium balance (stabilizing the nervous system). The lack of vitamin B6 in the general disease, the general lack of appetite loss, low food utilization, weightlessness, vomiting, diarrhea and other problems. Severe lack of acne, anemia, arthritis, child moles, depression, headaches, hair loss, inflammation, learning disabilities, weakness.

Tests	Specifications BP2019/EP9.0			Results		Specifications USP42				Results
Appearance	white or almost white crystalline powder			An almost white crystalline powder		A white or almost white crystalline powder				An almost white crystalline powder
Melting point	about 205 ℃,w decomposition			205℃		----				----
Identification	IR absorption test of chloride			Conform		IR absorption test of chloride				Conform
pH	2.4 ~ 3.0			2.6		----				----
Related substances	BImpurity B  ≤0.15%			Not detected
	Unspecified impurities≤0.10%			0.03%		----				----
	Total：≤0.2%			0.05%
Assay (on dried basis)	99.0%～101.0%			100.0%		98.0%～102.0%				99.7%
Loss on drying	≤0.5%			0.07%		≤0.5%				0.08%
Residue on ignition	≤0.1%			0.06%		≤0.1%				0.06%
Heavy metals	≤10ppm			<10ppm		≤10ppm				<10ppm
Chloride content (on dried basis)	----			----		16.9% to 17.6%				17.3%
microbial limit	According to BP2019/EP9.0			Conform		According to USP42				Conform
Conclusion	This batch complies with the specification of BP2019，EP9.0,USP42

1. Treatment of congenital hypofunction of metabolism;    
2. Prevent and treat vitamin B6 deficiency;     
3. Supplement to patients who need to consume more vitamin B6;     
4. Treatment of carpal tunnel syndrome.