The key is to find the dose that gives you benefits without significant side effects like nausea or fatigue
Dosing regimens have ranged from 350 g per week (in vegetarians) to 2000 g per day in a study including patients with pernicious anaemia, with the most common daily dose being 1000 g per day
For a guide on what to look for in a legitimate provider, see: Peptide Therapy Providers in 2026 Compared: What to Look For in a Legitimate Clinic The Honest Assessment: What We Know and What We Don't It's important to be clear-eyed about the evidence base
That last clause is the one that distinguishes a prescription peptide from a supplement
Top Frequently Asked Questions (FAQs) for Vitamin B12 Injections (Cyanocobalamin Injections) What does a vitamin B12 injection help with
GHK-Cu (Copper Peptide): Best for skin regeneration Why it's #1 for skin: Stimulates collagen and elastin production Improves skin thickness and firmness Reduces wrinkles and fine lines Enhances wound healing Improves skin tone and texture Best for: Anti-aging skin care Wrinkle reduction Skin firmness and elasticity Scar healing Overall skin quality Dosing: Topical: 1-2% GHK-Cu serum daily Injectable: 1-2mg, 3-5x weekly subcutaneous Long-term use acceptable Timeline: 4-6 weeks: Initial improvements 8-12 weeks: Visible wrinkle reduction 3-6 months: Significant skin transformation See our copper peptides GHK-Cu guide , glow peptides guide , and can you use peptides and retinol together