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Most researchers default to a 1000 mcg/ml concentration because the unit math is simple: 25 units = 250 mcg, 50 units = 500 mcg
PMID: 36551977
These simple shots are becoming a popular part of many mens wellness routinesand for good reason
Serious side effects are extremely rare in research studies and user reports
These aren't interchangeable substances
Disorders caused by deficiencies of Vitamin B1, B6, and B12, such as beriberi, iron-deficiency anemia, and seizures in children due to pyridoxine deficiency
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