It depends on the peptide , the dose and your state of health, but generally speaking: you may alter your hormonal balance (GH, IGF-1, cortisol, insulin) you may artificially influence growth and repair processes you may experience local side effects (reactions at the injection site) and systemic side effects (nausea, headaches, fatigue, digestive problems) by using unauthorised products , you may be at risk of contamination, incorrect dosages and substances other than those stated
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