Answer
The selected topical product information identifies no known hazard when used as directed, but evidence is limited. Seek urgent assessment for a severe headache or associated pregnancy warning symptoms.
Sources for this answer
- 4head 90% w/v Cutaneous Stick — Current selected SmPCemc · Summary of Product Characteristics
- Happinose 0.3% Ointment — Current selected SmPCemc · Summary of Product Characteristics
- NHS