Answer
Seek urgent medical advice and take the container or packaging with you. Do not deliberately induce vomiting unless instructed by a healthcare professional.
Sources for this answer
- Hydrogen Peroxide Solution 3% BP 10 Vols — Current selected SmPCemc · Summary of Product Characteristics
- UK GovernmentUK Government · Reputable Web
General medicine information. Follow the instructions for your own medicine and speak to a pharmacist or clinician about your individual circumstances.