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For instance, in a randomized, placebo-controlled trial in healthy adults, subcutaneous CJC-1295 injections produced sustained, dose-dependent increases in GH (two to 10 times) and IGF-1 (1.5 to three times) levels over several days, demonstrating prolonged GH axis stimulation without serious adverse effects, a hormonal milieu associated with anabolic and metabolic effects

The FDA also notes that 28 days is the assumed opened-vial period for this kind of container unless the label specifies something else