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are b12 sprays effective as injections — IV vs intramuscular (syringe) experience? : r/Fitness_India Efficacy of different routes of
Description
Annesley SJ, Fisher PR

Pill The stomach acids that aid in the natural breakdown of food also breakdown Vitamin B-12 pill supplements

Cloudiness can indicate aggregation, contamination, or temperature damage

In addition, injections are fast-acting, so you may begin to notice their effects almost immediately