What the FDA labels say about taking them together
Cimetidine and thalidomide
Thalidomide's FDA label of March 24, 2023 names cimetidine in its drug interactions section; the cimetidine label PlainMeds reads does not name thalidomide.
Check it at the source: the cimetidine FDA label on DailyMed (effective July 15, 2026, Mylan Pharmaceuticals Inc.); the thalidomide FDA label on DailyMed (effective March 24, 2023, Celgene Corporation).
What does the cimetidine label say about thalidomide?
Cimetidine's label (effective July 15, 2026) does not name thalidomide in these sections. A label lists what its studies and reports found; it is not a complete list.
Source: FDA drug label (Cimetidine), Mylan Pharmaceuticals Inc., effective July 15, 2026 (SPL set 06c0a509-026f-44e0-9975-a94a8de51d43), via openFDA; the full label on DailyMed
What does the thalidomide label say about cimetidine?
Thalidomide label, drug interactionsNon-cardiac drugs that may cause bradycardia include H2 blockers (e.g., famotidine, cimetidine), lithium, tricyclic antidepressants and neuromuscular blockers (succinylcholine).
Source: FDA drug label (Thalomid), NDA020785 (Bristol-Myers), as published by Celgene Corporation, effective March 24, 2023 (SPL set 2eda833b-1357-4ed4-a093-194524fcb061), 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
| Cimetidine | Thalidomide | |
|---|---|---|
| Labeled for | Acid reflux and ulcers | Leukemia, lymphoma and myeloma |
| Boxed warning | No | Yes |
| Pharmacy cost (NADAC) | $0.236 per tablet 300 mg tablet | 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