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ghk-cu effects timeline How Often to Inject GHK-Cu Peptide Therapy: The Definitive
Description
Forbes J et al

Retest in 60-90 days
TABLE 2 Pharmacokinetic parameters of BPC157 in rats following intramuscular administrations of doses ranging between 5 and 120 g/kg (mean SD, n = 6)

The parameters above are general ranges used in clinical practice your protocol may differ