Have difficulty absorbing B12 through food or supplements
Headaches or Lightheadedness: A small number of people might report mild headaches or feel a bit lightheaded for a short time, particularly right after an injection
How long B12 shots take to work depends on your B12 levels when you receive the injection, but you can expect to see improved energy, mental clarity, sleep, and other benefits anywhere from 12-48 hours after treatment
1 mg cyanocobalamin, water for injections, sodium hydroxide for pH adjustment, sodium chloride, sodium dihydrogen phosphate 2 water At the beginning of the treatment, 1 ampoule of 1 ml vitamin B 12 Lichtenstein (corresponding to 1000 micrograms of cyanocobalamin) is administered twice a week in the first weeks after diagnosis
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No GP referral is needed