H2 blockers, used to treat gastrointestinal ulcers and/or reduce stomach acid, may improve survival among people with cancer, especially after colorectal cancer resection.
Affordability and access
Prescription required?
- Cimetidine is available both by prescription and as an over-the-counter drug.
Other names and brands
You may find over-the-counter cimetidine under these alternate names:
- CVS Health Heartburn Relief
- Equaline Acid Reducer
- Leader Heartburn Relief
- Tagamet HB
- Tagamet Pro
Other names for H2 blockers:
- H2-antihistaminics
- H2-blockers
- Type 2 histamine receptor antagonists
- Histamine type 2 receptor antagonists
- Histamine-2 receptor blockers (H2RBs)
- Gastric acid suppressants—H2 blockers are one type of suppressants, but not all suppressants are H2 blockers
Individual H2 blockers:
- Cimetidine
- Famotidine
- Ranitidine
Where to access
- Drug stores
- Online supplement distributors
Affordability
- Moderate cost (between $500 US and $2000 US/year)