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In another study (13), when administrated to infertile men (1,500 g /day), the sperm analysis conducted after eight weeks showed: an increase in sperm concentration in 38.4% of men an increase in total sperm count in 53.8% of men an increase in sperm motility in 50% of men When administrated at a high dose (6, 000g/day) to men with a low sperm count, a 57% improvement has been noted (14)

The duration and effects of a Vitamin B12 shot can vary widely depending on individual needs, dosage, frequency of administration, the bodys storage capacity, lifestyle factors, and metabolism

Still, this method of injection may be more suitable for drugs and vitamins to be slowly absorbed over time

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