1, used for megaloblastic anemia, clinically mainly used for the treatment of primary or secondary endogenous factor deficiencies caused by megaloblastic anemia 2, can be used for adjuvant treatment of neuritis.

3, for tropical or non-tropical stomatitis diarrhea, intestinal resection caused by the formation of the blind end and diverticula of the small intestine, short bilobed tapeworm intestinal parasites, such as vitamin B12 absorption disorders.

4, for vitamin B12. Supplement:① long-term strict vegetarian; ② malabsorption syndrome, cirrhosis and other liver diseases, recurrent hemolytic anemia, hyperthyroidism, chronic infections, malignant tumors, severe kidney disease and other patients.

5, can also be used for neurological atrophy, hepatitis, aplastic anemia, leukopenia, etc., the general dosage is larger, and the efficacy is controversial.

Usage and dosage intramuscular injection. Vitamin B12 deficiency: 25~50μg each time, once every other day, **** for 2 weeks; maintenance dose, 25~50g each time, once/month.

Drug interactions

Chloramphenicol: antagonizes the antianemic effect of vitamin B12.

Vitamin C: can destroy vitamin B12, the two drugs should be taken 2-3h

+ iron: is a vitamin B12 stabilizer, can also antagonize the vitamin C on the destruction of vitamin B12; but a large number of iron can also destroy vitamin B12 antineoplastic drugs: can attenuate the anti-anemic effect of vitamin B12, and can reduce the vitamin B12 absorption.

Phenelzine, sodium p-aminosalicylate, kauleidenamine, potassium chloride: can affect the absorption of vitamin B12 gastrointestinal tract.

Neomycin, polymyxin B, kanamycin, bacitracin: all can impede the gastrointestinal absorption of vitamin B12 and iron.

+ folic acid: and vitamin B12 co-treatment of pernicious anemia has a complementary effect, can improve the efficacy of c + sodium nitroprusside poisoning: vitamin B12 can be lifted sodium nitroprusside cyanide poisoning-like reaction omeprazole: can affect the absorption of vitamin B12, causing vitamin B12 deficiency

Vitamin B12 contraindications <

ContraindicationsHypersensitivity to this product.

Adverse reactions Intramuscular injection. Rash, pruritus, diarrhea, and allergic asthma may occasionally occur, but the incidence is low. Rarely, anaphylaxis may occur. Prolonged use can occur iron deficiency anemia.

1, eggs

Eggs are really nutritious and affordable, in addition to protein, calcium, zinc, and a sufficient amount of vitamin B12 and a reasonable amount of vitamin A, vitamin B5, vitamin D, vitamin K, vitamin E, these vitamins account for about 7% of an egg.

2, dairy products

234 milliliters of low-fat yogurt or 1 cup of low-fat milk can provide more than 1 microgram of vitamin B12. Therefore, drinking dairy products every day, you can supplement vitamin B12.

3, fortified food

When it comes to fortified food, you will not be unfamiliar with it, such as iodized salt, infant formula, by adding essential nutrients to the food, so that the body can replenish these substances.

Some cereals, plant-based beverages, soy milk, etc., may be fortified products. If you want to get vitamins from these foods, then you need to look at the nutrition label when you buy them to determine if they are fortified.

4, seafood

Various types of seafood are rich in vitamin B12, especially clams, high content. If you prefer to eat fish, a variety of salmon, rainbow trout, sardines also contain some vitamin B12. In addition, a variety of crabs, shrimp, seaweed, etc., is also a good choice.

5, beef liver

Beef liver is also rich in vitamin B12, as well as protein and iron, can be said to be very good meat food.

However, although many meats contain vitamin B12, the amount that can actually be supplemented by eating meat is very low due to the poor heat resistance of vitamin B12.

Therefore, the average person still needs to drink dairy products to get a sufficient amount of vitamin B12.

Vitamin B12 is important for the body, so it's important to get it in a timely manner. People who have a bad stomach and have difficulty absorbing it also need to consult a doctor and regulate it in other ways. The elderly who do not drink dairy products will need to supplement vitamin B12 in other ways even more.