Answer
Yes. Rare immune-mediated thrombocytopenia can be life-threatening; stop taking it and obtain urgent medical assessment for unexplained bruising or bleeding.
Sources for this answer
- Quinine Bisulfate Tablets BP 300mg — 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.