Does collagen have any side effects?
Collagen supplements are generally safe with rare side effects reported in studies. Possible issues include mild digestive symptoms like nausea or diarrhoea in some cases, and allergic reactions if the product contains allergens such as fish or shellfish. People with kidney problems, gout, or those taking certain medicines should check with a doctor first, as excess protein might affect them.
Key points:
- Side effects from collagen supplements are rare.
- Digestive upset such as nausea or diarrhoea can occur in some people.
- Allergic reactions are possible from animal sources like fish or shellfish.
- Extra care needed for kidney issues, gout, pregnancy, or certain medications.
This text has been fact-checked for accuracy by Sorin Romaniuc, Pharmacist at medino.