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b12 im injection technique B-12 (Methylcobalamin) Therapy Giving B12 Injections What is
Description
How Do B12 Injections Work

2 With the development of birth control pills in the 1950s, the FDA approved use of the pill with its synthetic hormone-mimicking chemicals to suppress heavy menstrual bleeding

So, patients must take vitamin B12 for life to manage their condition well

Anyway, focus on the positives I guess