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Vitamin B12, vitamin B12 or vitamin B-12, also called cobalamin, is a water- soluble vitamin with a key role in the normal functioning of the brain and nervous system, and for the formation of blood. It is one of the eight B vitamins. Vitamin B12 is normally involved in the metabolism of every cell of the human body, especially affecting DNA synthesis and regulation, but also fatty acid synthesis and energy production. Neither fungi, plants, nor animals are capable of producing vitamin B12. Only bacteria and archaea have the enzymes required for its synthesis, although many foods are a natural source of B12 because of bacterial symbiosis. The vitamin is the largest and most structurally complicated vitamin and can be produced industrially only through bacterial fermentation-synthesis.
Vitamin B series
| Vitamin B1: Thiamine Mononitrate; Thiamine Hydrochloride |
| Vitamin B2: Riboflavin |
| Vitamin B3: Nicotinamide; Niacin |
| Vitamin B5: D-Calcium Pantothenate |
| Vitamin B6: Pyridoxine Hydrochloride |
| Vitamin B9: Folic Acid |
| Vitamin B12: Cyanocobalamin pure; 1%; 0.1% |
Delivery:
| Selections | Speed | Duration | Suitable for | Service | Cost |
| By Express | Fast | 3-10 days | <50kg | Door to door | High |
| By Air | Fast | 3-7 days | >50kg | Airport to airport | Lower the express |
| By Sea | Slow | 7-45 days | large quantity | Port to port | Lowest |
Zhejiang Weile Biotechnology Co., Ltd committes to providing domestic and foreign customers with the most cost-effective products, the most specialized solutions, and the most standard pre-sales and after-sales services.
1. A large number of high quality products, manufactured by leading producers, and supported by excellent quality control system.
2. A broad range of Third Party Certifications, including GMP, USP, EP, ISO, KOSHER, HALA, FSSCC and so on, with the fundamental assurance of products quality.
3. Professional product knowledge, providing comprehensive services for customers.
4. Rich market experience, with well-deserved reputation.
5. Regular safety stocks, ensuring sustainable supply.
6. Samples will be free
Suppliers with verified business licenses
Audited Supplier 
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