Vitamin C Forum

Cathcart and others discussed IM administration of smaller doses of vitamin C. Has this route of administration been completely abandoned? IM tends to be a safer and less complicated form of injection, but still much more bioavailable vs oral. IM is 100% bioavailable like IV, but it has a lower and longer peak plasma distribution. It tends to have a more local effect due to high concentration diffusing at site of administration.

UP.