Vitamin B6 Pyridoxine HCL Powder for Metabolism and Nervous System Formulas

Vitamin B6 (pyridoxine hydrochloride) is used primarily for amino acid metabolism, nervous system function, energy-yielding metabolism, homocysteine metabolism, immune support and red blood cell formation. After conversion to pyridoxal-5-phosphate (P5P) in the liver, it acts as a coenzyme for over 100 reactions, including the synthesis of the neurotransmitters serotonin, dopamine and GABA. EFSA recognizes that vitamin B6 contributes to normal energy-yielding metabolism, normal functioning of the nervous system, normal homocysteine metabolism, normal red blood cell formation and normal immune function. Purecium supplies pyridoxine HCL as a 99% minimum USP-grade powder for distributors, contract manufacturers, private-label producers and supplement brands.

Pyridoxine HCL (CAS 58-56-0) is the stable hydrochloride salt of pyridoxine, the standard commercial form of vitamin B6; the body converts it to the active coenzyme pyridoxal-5-phosphate (P5P) mainly in the liver. P5P is the already-activated coenzyme form, used in premium products to bypass hepatic conversion and to serve populations with liver-conversion concerns. P5P is significantly more expensive, is less stable and has no separate USP monograph in all markets, while pyridoxine HCL is the pharmacopeial standard, highly stable, and fully bioavailable for the vast majority of users. Most B-complex and multivitamin systems use pyridoxine HCL; premium cognitive and metabolic lines sometimes use P5P or a blend. Purecium supplies pyridoxine HCL as the cost-effective, regulatory-clear standard.

Pyridoxine is absorbed in the intestine and converted to the active coenzyme pyridoxal-5-phosphate (P5P) through a two-step pathway: pyridoxal kinase phosphorylates pyridoxine to pyridoxine-5-phosphate, and pyridoxine-5-phosphate oxidase then oxidizes it to P5P, with the enzyme requiring flavin mononucleotide (vitamin B2) as a cofactor. This is why vitamin B2 status influences vitamin B6 activation, and why B-complex formulations keep the B vitamins together. For healthy adults the conversion is efficient, and pyridoxine HCL delivers full vitamin B6 activity. This conversion pathway is well documented in the scientific literature; finished-product claims must follow destination-market regulations.

A USP-grade pyridoxine hydrochloride should be assayed at 99.0% to 101.0% on a dried basis by HPLC against the USP-NF or EP monograph, with related substances within limits (including the free base and oxidation impurities), chloride content in the expected range for the hydrochloride salt, moisture not more than 0.5%, heavy metals within monograph limits, conforming residual solvents and microbial counts within USP/EP limits. The particle-size profile should be documented for blending and compression performance. Purecium reports all of these on the batch Certificate of Analysis, including the assay method, production date and expiry date. Buyers should always request the current CoA and confirm the assay basis (dried versus as-is).

The free base form of pyridoxine (CAS 65-23-6) is less stable and more difficult to handle in manufacturing, while the hydrochloride salt forms a highly stable, free-flowing crystalline powder with a defined particle profile that blends and compresses well in tablets, capsules and gummies. The salt also provides consistent stoichiometry for assay and labeling: 1 mg of pyridoxine HCL contains approximately 0.82 mg of pyridoxine base, a conversion factor that matters when setting label declarations. The USP-NF, EP and FCC monographs are written for pyridoxine hydrochloride, making it the regulatory-standard form. Buyers sourcing the free base should confirm its stability and monograph coverage for their market.

Pyridoxine HCL is highly bioavailable: it is rapidly absorbed in the upper intestine and efficiently converted to the active coenzyme P5P in healthy individuals, and it is the reference form used in bioavailability and metabolism research. Its bioavailability is equivalent to food-source vitamin B6 for practical purposes, and it is the form used in the vast majority of clinical and regulatory evaluations of vitamin B6. P5P is absorbed as the intact coenzyme but is dephosphorylated at the intestinal brush border before absorption, so the practical bioavailability difference is small for healthy adults. For most products, pyridoxine HCL delivers the full nutritional benefit at a fraction of the cost of P5P.

Vitamin B6 is used at both nutritional doses (1.3 to 10 mg) and higher functional doses (25 to 100 mg per day) in energy, hormone-balance and nervous-system products. The FDA has established a tolerable upper intake level of 100 mg per day for adults in the United States, and EFSA has set an upper level of 25 mg per day for long-term supplement use in the European Union; the European level is based on long-term neuropathy considerations at very high doses. Formulators should design doses within the applicable upper levels of their destination market and avoid prolonged mega-doses without professional review. Purecium provides regulatory-support documentation to assist with dosage positioning and label compliance.

Vitamin B6 is the coenzyme for aromatic amino acid decarboxylase, the enzyme that converts 5-HTP to serotonin and L-DOPA to dopamine, and it also participates in GABA synthesis from glutamate. Through these reactions, vitamin B6 supports the production of key neurotransmitters involved in mood, sleep and cognitive function, which underpins its inclusion in mood-support, sleep and relaxation products alongside magnesium and L-theanine. EFSA recognizes vitamin B6's contribution to normal psychological function and normal functioning of the nervous system. Peer-reviewed research supports the mechanism; finished-product claims must follow destination-market regulations.

A professional supplier should provide a current specification sheet, a batch-specific Certificate of Analysis showing identification, HPLC assay, related substances, chloride content, moisture, heavy metals, residual solvents and microbial results, an SDS, allergen and gluten statements, and non-GMO declarations. Depending on your destination market, also request Kosher and Halal certificates, copies of the ISO 9001 and FSSC 22000 certificates, and stability data for registration purposes. Because vitamin B6 is a synthetic powder, also confirm the route if your brand positioning requires it. Purecium provides this full documentation set on request for every shipment.

Yes. Pyridoxine HCL produced by the synthetic route uses no animal-derived input, so it is fully suitable for vegan labeling and is inherently non-GMO. It contains no gluten-containing ingredients and no major allergens, and the manufacturing facility follows allergen-control procedures. Allergen-free, gluten-free, non-GMO and vegan statements are provided with each shipment. Buyers should request these statements per lot because they must be documented for finished-product labeling in most regulated markets.

The minimum order quantity is 25 kg. The powder is packed in 25 kg drums with food-grade aluminum-foil inner bags, and samples and technical documentation are available before you commit. Standard production lead time is typically 7 to 15 working days after order confirmation, depending on the specification and production schedule, with faster dispatch for stocked items. For North American customers, Purecium holds inventory at its US warehouse, enabling pickup or delivery within approximately two days. Export documentation, including the Certificate of Analysis, packing list and certificate of origin, is prepared for every shipment.

Store pyridoxine HCL in tightly sealed original containers in a cool, dry place below 25 degrees Celsius, protected from moisture and strong light. The crystalline hydrochloride salt is stable under these conditions, and shelf life is generally 36 months from the date of manufacture. While the dry powder is light-tolerant, aqueous solutions of B6 are light-sensitive, so finished liquid products require opaque packaging. Reseal containers immediately after use and avoid humidity during blending, since the crystalline form can cake. Each shipment's CoA states the production date and expiry date for inventory planning.

Yes, this is a classic and well-supported combination. Magnesium is a cofactor in hundreds of enzymatic reactions and pairs naturally with vitamin B6 in energy, muscle, sleep and nervous-system formulas; vitamin B12 works alongside B6 and folate in homocysteine metabolism. All three are dry powders that blend well in tablets, capsules and sachets, and the combination is standard in evening, mood-support and energy products. Formulators should verify ingredient compatibility, particle-size matching and blend stability, and confirm label claims comply with destination-market regulations. Purecium can supply technical guidance for these combinations.

Vitamin B6 (pyridoxine HCL) is an authorized vitamin for food supplements in the European Union, where EFSA has established an adequate intake and recognized claims for normal energy-yielding metabolism, nervous system function, homocysteine metabolism, red blood cell formation, protein and glycogen metabolism, psychological function, immune function and reduction of tiredness and fatigue. In the United States, the FDA sets Daily Values and has established a tolerable upper intake level of 100 mg per day for adults. Other markets apply their own rules, and permitted dosage levels and claim wording differ between jurisdictions. B2B buyers should verify per-market requirements before finalizing label strength. Purecium provides regulatory-support documents to assist with submissions.

Purecium supplies Vitamin B6 (Pyridoxine HCL) as a B2B raw material for distributors, contract manufacturers, private-label producers and supplement brands, standardized to 99.0% minimum assay and produced to USP, EP and FCC standards via a controlled synthetic route. Every batch is HPLC-assayed and ships with a full Certificate of Analysis, SDS and supporting documentation. The minimum order is 25 kg, inventory is staged at our US warehouse for two-day pickup, and global delivery covers Hong Kong, mainland China, the EU and beyond. For long-term supply relationships, Purecium provides consistent quality, batch traceability, regulatory documents and direct technical communication rather than one-off spot pricing.