They are a practical alternative for patients who find tablets difficult to tolerate, though current evidence does not clearly demonstrate superiority over standard high-dose oral tablets
At 3 months of age, 85% of infants in the supplemented group had adequate vitamin B 12 blood levels compared to 36% in the placebo group.[25] One hundred twenty-four pregnant women in Canada received 12 mcg oral vitamin B 12 once daily beginning at 13 to 22 weeks gestation and continuing through 8 weeks postpartum
A large catalog may indicate scale and long-term market presence, while a more focused catalog can suggest tighter quality control and stronger documentation oversight
Unknown long-term effects: Generally speaking, most people seem to tolerate short-term use well, however, no one really knows the effects of using higher doses for the long-term
Athletes should not assume lack of established methods means safety
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