Reference summary — not medical advice or a personal risk estimate.
Hydrochlorothiazide
Summary
A common blood pressure medication associated with increased skin cancer risk.
Detail
Hydrochlorothiazide is Group 2A with limited evidence for non-melanoma skin cancer (squamous and basal cell) and lip cancer. The proposed mechanism involves photosensitisation of the skin. Sun protection is a reasonable precaution for people taking it; questions about whether to continue or switch antihypertensive medication are clinical decisions between a patient and their care team.
Regional relevance
global
Documented in these products
Presence in a product category doesn't imply the product causes cancer. Click each to see the source and context.
Sources
Consumer references
Third-party tools some readers use alongside primary evidence. Meyron doesn't endorse them; we link them because you'll otherwise hit them anyway.
- California Prop 65 list
State of California's list of chemicals known to cause cancer or reproductive harm.