Possible side effects include, but are not limited to: Nausea Diarrhea Vomiting Constipation Abdominal pain Headache Fatigue Dyspepsia Dizziness Abdominal distension Belching Hypoglycemia Flatulence Gastroenteritis Gastroesophageal reflux disease (GERD) General Recommendations for Side Effects Improve eating habits Eat slowly Eat only if you are really hungry Eat smaller portions Avoid lying down after having a meal Stop eating in case of feeling of fullness Increase meal frequency Avoid drinking through a straw Eat without distractions and enjoy savoring the food Try not to be too active after eating Avoid eating too close to bedtime Adapt food composition to your requirements Choose easy-to-digest food, low fat diets (focus on bland foods) Use oven, cooking griddle, or boiling Increase fluid intake, especially clear, fresh drinks (in small sips) but not so much as to make you feel too full Health food that contain water (soups, liquid yogurt, gelatin, and others) Avoid sweet meals Avoid dressings, spicy foods, canned food, & sauces that are not home-cooked Get some fresh air Do some light exercise Keep a food diary - it may be useful to identify foods or meal timings that make it worse

Indicatively and honestly: GHK-Cu is a well-characterized cosmetic copper tripeptide with a genuinely plausible, multi-pathway rationale for supporting hair follicles dermal papilla vitality, angiogenesis, suppression of a catagen signal, and an anti-inflammatory, antioxidant tilt supported by in vitro and ex vivo data (much of it from the related peptide AHK-Cu) and by an extensive skin-regeneration literature
High-quality supplements are manufactured in state-of-the-art facilities that adhere to strict quality control standards
The exact diagnosis code and FDA-approved use can change the outcome