Chewce

Oral tablet administration

To prevent scurvy, give 1 tablet daily. To treat scurvy, the dose is 1 to 2 tablets daily, though it may be increased depending on how severe the condition is. To reduce the risk of stroke in the elderly, 1 to 2 tablets daily are used. In other cases, take 1 tablet daily or as the physician directs. The maximum safe dose is 2000 mg daily, in divided doses.

Oral sachet administration

Take 1 sachet daily, or as directed by a registered physician. The maximum dose is 2000 mg/day (4 sachets/day).

Parenteral administration

Vitamin C is usually given by mouth. When oral use is not feasible, or when malabsorption is suspected, it may be given IM, IV or subcutaneously. By the parenteral route, the vitamin is reportedly used best by the body after IM administration, so IM is the preferred parenteral route. For intravenous injection, dilute it in a large volume parenteral such as Normal Saline, Water for Injection or Glucose. This is recommended to minimize the adverse reactions linked with intravenous injection.

The average protective dose of vitamin C for adults is 70 to 150 mg daily. When scurvy is present, doses of 300 mg to 1 g daily are recommended. As much as 6 g has been given parenterally to normal adults without evidence of toxicity.

To improve wound healing, 300 to 500 mg daily for a week or ten days, both before and after surgery, is generally considered adequate, although considerably larger amounts have been recommended. In the treatment of burns, the dose depends on the extent of tissue injury. For severe burns, daily doses of 1 to 2 g are recommended. In other conditions where the need for vitamin C is increased, three to five times the daily optimum allowances appear to be adequate.

Whenever the solution and container permit, inspect parenteral products by eye for particulate matter and discoloration before giving them.