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Injections usually require a prescription, while oral supplements are often available over the counter
Most research applications involve subcutaneous or intramuscular injection
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Splitting into twice-daily injections is reasonable at higher daily totals (e.g., 250 mcg AM + 250 mcg PM at a 500 mcg/day total)
US$ 24.11
US$ 29.66
US$ 25.52
US$ 29.73
