Medicines used for heartburn and reflux are not a single group. Proton pump inhibitors and H2 blockers reduce stomach acid production, while antacids act on acid already present. Those differences are a useful starting point when navigating interaction information.
A shelf label such as heartburn relief does not identify the active ingredient. This page helps you move from a symptom-based search to the relevant medicine record, then to a pair involving another medicine or supplement on the label.
Separate the product types before searching
Omeprazole is a proton pump inhibitor; famotidine is an H2 blocker. An antacid may instead list compounds containing calcium, magnesium or aluminium. Products sold for similar symptoms can therefore lead to different medicine pages and different interaction questions.
Record whether the product is a tablet, chewable preparation or liquid, and copy every active ingredient from a combination product. The same brand family can offer several preparations. Match the actual label rather than assuming one brand name describes everything it sells.
Follow the ingredient into a specific pair
From the medicine page, look for the exact second medicine you want to research. Antacids can affect how other medicines are absorbed, so a question about an antacid and another tablet differs from a general question about treating reflux.
Keep several products visible as separate entries. A regular acid reducer, an occasional indigestion remedy and a mineral supplement should not disappear into one description. Pair records are easier to interpret when each ingredient is clearly identified and has a matching entry.
Bring the routine to the pharmacist
Ask whether the preparation could affect another medicine, whether combination ingredients change the review, and whether its leaflet contains relevant food or timing instructions. These questions are useful when adding an over-the-counter remedy to an existing prescription list.
A pharmacist can turn that information into instructions appropriate to the products involved. This hub supplies orientation and links to medicine and pair records; the label, full medicine list and reason for treatment remain part of the professional review.
English medicine records
Open a medicine record to check its identity, sources and available information. Products, formulations and licensed uses can differ by country.
- Losec (Omeprazole): Uses, Safety and Drug InteractionsActive ingredient: Omeprazole
- Nexium 40 mg gastro-resistant tablets — Medicine information in EnglishActive ingredient: Esomeprazole
- Lansor 30 mg — Medicine information in EnglishActive ingredient: Lansoprazole
- Famodin 40 mg tablets — Medicine information in EnglishActive ingredient: Famotidine
- VonoprazanActive ingredient: Vonoprazan
- Cimetidine: Uses, Safety and InteractionsActive ingredient: Cimetidine
- Dexlansoprazole: Uses, Safety and InteractionsActive ingredient: Dexlansoprazole
Documented interactions in English
Each link opens an existing, source-validated pair record. A missing record does not mean that there is no interaction.
- Losec 20 mg and Plavix 75 mg — Interaction information
- Esomeprazole (Nexium 40 mg) and Plavix 75 mg — Interaction information
- Lansoprazole (Lansor 30 mg) and Plavix 75 mg — Interaction information
- Levothyroxine sodium (Levotiron 100 mcg) and Losec 20 mg — Interaction information
- Levothyroxine sodium (Euthyrox 100 mcg) and Losec 20 mg — Interaction information
- Levothyroxine sodium (Levotiron 100 mcg) and Esomeprazole (Nexium 40 mg) — Interaction information
- Cimetidine and Coumadin 5 mg: Interaction Information
- Cimetidine and Glucophage 1000 mg: Interaction Information
Sources and scope
Sources checked: . Linked records carry their own sources and scope. Source checking is separate from review by a qualified clinician.