In practice, once nightly usually means one injection in the evening each day, based on the schedule your clinician has selected
Trends in Endocrinology & Metabolism, 28(5), 340-353
The most consistently documented side effect of excessive B12 is dermatological reactions, particularly acne-like eruptions and rosacea flare-ups
Like all B complex vitamins, B5 is required for the metabolism and synthesis of carbohydrates, proteins, and fats for energy
For competitive athletes, the World Anti-Doping Agency's "Non-Approved Substances" category (S0) can apply to compounds not approved for human use even where not individually listed
E mail I am a first time customer so have only taken a few B12 injections to date, but I am happy with the product so far