Answer
Yes. It can cause blue, grey, black or brown pigmentation of skin, nails, teeth, mouth or other tissues, particularly with extended use. Report unusual colour changes promptly.
Sources for this answer
- Acnamino MR 100mg Capsules — Current selected SmPCemc · Summary of Product Characteristics
- Minocin MR 100mg Modified Release Capsules — Current selected SmPCemc · Summary of Product Characteristics
General medicine information. Follow the instructions for your own medicine and speak to a pharmacist or clinician about your individual circumstances.