can you buy b12 injections over the counter in uk Compounded Hydroxocobalamin (Vitamin B12) Injection Vitamin B12 | Quayside Medical

Treatment with methylcobalamin or hydroxocobalamin may unmask this condition

Side Effects of Excessive B12 Intake Whilst vitamin B12 toxicity is uncommon, several adverse effects have been reported in association with very high B12 levels, though establishing direct causation remains challenging

According to WebMD, to treat B12 deficiency: Injecting 0.2 mcg/kg of vitamin B12 into the muscle or under the skin once daily for 2 days, followed by a 1000 mcg injection daily for 2-7 days and another 100 mcg injection weekly for 4 weeks thereafter has been used

Do not use in cases of calcinosis in cattle and small ruminants