What the FDA labels say about taking them together
Bromocriptine and tamoxifen
Tamoxifen's FDA label of December 18, 2025 names bromocriptine in its drug interactions section; the bromocriptine labels PlainMeds reads (2) do not name tamoxifen.
Check it at the source: the bromocriptine FDA label on DailyMed (effective July 27, 2026, ANI Pharmaceuticals, Inc.); the tamoxifen FDA label on DailyMed (effective December 18, 2025, Actavis Pharma, Inc.).
What does the bromocriptine label say about tamoxifen?
Bromocriptine's label (effective July 27, 2026) and its 1 other brand-application label do not name tamoxifen in these sections. A label lists what its studies and reports found; it is not a complete list.
Source: FDA drug label (Bromocriptine Mesylate), ANI Pharmaceuticals, Inc., effective July 27, 2026 (SPL set 17f3a343-1782-4799-95ba-31dfe93be2cf), via openFDA; the full label on DailyMed
What does the tamoxifen label say about bromocriptine?
Tamoxifen label, drug interactionsConcomitant bromocriptine therapy has been shown to elevate serum tamoxifen and N-desmethyl tamoxifen.
Source: FDA drug label (Tamoxifen Citrate), Actavis Pharma, Inc., effective December 18, 2025 (SPL set 9b8a4211-120f-4981-ad69-928accb97637), 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
| Bromocriptine | Tamoxifen | |
|---|---|---|
| Labeled for | Parkinson's disease, Type 2 diabetes | Breast cancer |
| Boxed warning | No | Yes |
| Pharmacy cost (NADAC) | $1.61 per tablet 2.5 mg tablet | $0.277 per tablet 20 mg tablet |
| 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