Gastrointestinal symptoms - Diarrhea, constipation, abdominal discomfort, vomiting Reduced appetite - While this contributes to weight loss, some people find it makes eating adequate nutrition challenging Fatigue - Some individuals report feeling more tired, particularly in the first few weeks Injection site reactions - Redness, itching, or mild discomfort at injection sites (for injectable formulations) Most side effects are dose-dependent and tend to improve as the body adjusts
Annals of Allergy, Asthma & Immunology, 127 (5), S117
For someone already managing endo belly, this worsening period can feel like a disease flare
Peptides synthesized without batch verification can contain amino acid substitutions, truncated sequences, or synthesis byproducts that range from inactive to potentially harmful