Vitamin C tablets

Vitamin C participates in many reactions in the body, such as participating in the redox process, and plays an important role in biological oxidation and reduction and cellular respiration. From the tissue level, the main role of vitamin C is related to the synthesis of intercellular matrix. Including collagen, the matrix of teeth and bones, and the junction between capillary endothelial cells. Therefore, when scurvy caused by vitamin C deficiency is accompanied by collagen synthesis defects, it manifests as difficult wound healing, impaired tooth formation and capillary damage causing a large number of ecchymosis points, which merge to form ecchymosis.

The main ingredients of this product are: Vitamin C. Molecular formula: C6H3O6 Molecular weight: 176.13

This product is white or slightly yellowish tablets.

1. It is used to treat scurvy and can also be used as an auxiliary treatment for various acute and chronic infectious diseases and purpura. 2. Treatment of chronic iron poisoning: Vitamin C promotes the chelation of iron by deferoxamine, accelerating the excretion of iron. 3. Treatment of idiopathic methemoglobinemia. 4. The following situations increase the need for vitamin C: (1) patients receiving chronic hemodialysis, gastrointestinal diseases (long-term diarrhea, gastric or ileal resection), tuberculosis, cancer, ulcer disease, hyperthyroidism, fever, infection, trauma, burns, surgery, etc.; (2) patients receiving parenteral nutrition due to strict control or selection of diet, malnutrition, sudden weight loss, and during pregnancy and lactation; (3) when using barbiturates, tetracyclines, salicylates, or vitamin C as a urinary system acidifier.

Oral administration, 50-100 mg at a time, 100-300 mg per day.

1. Long-term use of 2-3g per day may cause scurvy after discontinuation of the drug. 2. Long-term use of large amounts of vitamin C may occasionally cause urate, cysteine or oxalate stones. 3. Large amounts (daily dosage of more than 1g) may cause diarrhea, red and shiny skin, headache, frequent urination (daily dosage of more than 600mg), nausea and vomiting, and stomach cramps.

1 Vitamin C should be taken on an empty stomach, but patients with gastrointestinal ulcers should use it with caution to avoid irritation to the ulcer surface, which may lead to worsening of the ulcer, bleeding or perforation. 2 People with poor renal function should not take too much vitamin C. Long-term overdose of vitamin C may cause excessive gastric acid, gastric reflux, and even urinary stones. People with kidney deficiency in particular should take less vitamin C. 3 Do not stop taking vitamin C suddenly after taking a large amount of it. If you stop taking it suddenly, it will cause withdrawal reactions from the drug, aggravate or relapse the symptoms. You should gradually reduce the dosage until you stop taking it completely. 4 Vitamin C should not be used in combination with isoniazid, aminophylline, streptomycin, penicillin and sulfonamides; otherwise, the efficacy of the above drugs will be reduced or ineffective due to the acidic environment. 5 Vitamin C is destructive to vitamin A.

Precautions for children: Children must use under adult supervision. Precautions for pregnancy and lactation: This product can pass through the placenta and be secreted into breast milk. Large daily intake of this product by pregnant women may be harmful to the fetus, but this has not been confirmed by animal experiments. Precautions for the elderly: Not yet clear.

1 Oral administration of large doses of vitamin C (more than 10g per day) can interfere with the anticoagulant effect of anticoagulants. 2 Combination with barbiturates or primidone can increase the excretion of vitamin C. 3 Sodium cellulose phosphate can promote the metabolism of vitamin C into oxalate. 4 Long-term or large-scale use of vitamin C can interfere with the effect of disulfiram on ethanol. 5 Salicylic acid can increase the excretion of vitamin C. 6 Combination with levodopa can reduce the efficacy of levodopa. 7 Combination with heparin or warfarin can cause a shortening of the prothrombin time.

seal.

100mg

18 months