What the FDA labels say about taking them together
Miglitol and ranitidine
Miglitol's FDA label of April 1, 2022 names ranitidine in its drug interactions section; the ranitidine label PlainMeds reads does not name miglitol. The miglitol label: “Other healthy volunteer studies have demonstrated that miglitol may significantly reduce the bioavailability of ranitidine and propranolol by 60% and 40%, respectively.”
Check it at the source: the miglitol FDA label on DailyMed (effective April 1, 2022, Proficient Rx LP); the ranitidine FDA label on DailyMed (effective May 1, 2026, Amneal Pharmaceuticals of New York LLC).
What does the miglitol label say about ranitidine?
Miglitol label, drug interactionsOther healthy volunteer studies have demonstrated that miglitol may significantly reduce the bioavailability of ranitidine and propranolol by 60% and 40%, respectively.
Source: FDA drug label (Miglitol), ANDA203965 (Orient Pharma), as published by Proficient Rx LP, effective April 1, 2022 (SPL set f16ecb50-e54e-43e1-8789-eaf5bc94f332), via openFDA; the full label on DailyMed
What does the ranitidine label say about miglitol?
Ranitidine's label (effective May 1, 2026) does not name miglitol in these sections. A label lists what its studies and reports found; it is not a complete list.
Source: FDA drug label (Ranitidine), Amneal Pharmaceuticals of New York LLC, effective May 1, 2026 (SPL set b38a3332-5c54-453f-aeb7-070f830955c2), via openFDA; the full label on DailyMed
These are the labels' own sentences. PlainMeds does not grade interactions; a pharmacist or prescriber can say what they mean for one person's medicines.
Both medicines on the record
| Miglitol | Ranitidine | |
|---|---|---|
| Labeled for | Type 2 diabetes | Acid reflux and ulcers |
| Boxed warning | No | No |
| Pharmacy cost (NADAC) | n/a | n/a |
| Shortage now | No current entry | No current entry |
Source: FDA NDC Directory, CMS NADAC of October 7, 2026 and the FDA Drug Shortage Database (FDA files October 8, 2026)
What next?
- Check more medicines together
- up to five at once