The most common thing you might notice is mild redness, tenderness, or slight swelling where the needle went in, and that usually settles quickly
For more detail on managing these, our peptide safety guide covers side effect management comprehensively
You should contact your GP, call NHS 111, or seek urgent medical advice if you are currently using unlicensed peptides and experience any of the following: Severe or persistent nausea, vomiting, or abdominal pain Signs of infection at an injection site (redness, swelling, warmth, discharge) Unexplained changes in heart rate or palpitations Symptoms of an allergic reaction (rash, swelling, difficulty breathing) Persistent right upper quadrant pain, fever, or jaundice (which may indicate gallbladder problems) Significant unintentional weight loss or fatigue Call 999 or go to your nearest emergency department if symptoms are severe or rapidly worsening
Gentle contact is fine