A randomized controlled trial in 167 older adults (50 years) found two-year supplementation with vitamin B 12 (10 g/day), along with folic acid (200 g/day), vitamin B6 (10 mg/day), riboflavin (5 mg/day), and vitamin D (10 g/day), had no effect on bone mineral density (total hip, femoral neck, or lumbar spine) compared to the control group only receiving vitamin D (10 g/day ) (116)
Two numbers describe every needle: the gauge (how thick it is, where a higher number means a thinner needle) and the length (how deep it can reach)
Heally provides the injectable option by telehealth
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Unfortunately, its also one of the vitamins that people are most likely to be deficient in, especially if they are vegetarian or vegan, are over 50, or have conditions that affect absorption