What the FDA labels say about taking them together
Bromocriptine and olanzapine
Bromocriptine's FDA label (Cycloset) of January 12, 2026 names olanzapine in its warnings and precautions section; the olanzapine labels PlainMeds reads (3) do not name bromocriptine. The bromocriptine label: “Dopamine receptor antagonists, including neuroleptic agents that have dopamine D2 receptor antagonist properties, may reduce the effectiveness of CYCLOSET, and CYCLOSET may reduce the effectiveness of these agents.”
Check it at the source: the bromocriptine FDA label on DailyMed (effective July 27, 2026, ANI Pharmaceuticals, Inc.); the olanzapine FDA label on DailyMed (effective March 5, 2026, Macleods Pharmaceuticals Limited).
What does the bromocriptine label say about olanzapine?
Cycloset label (Avvisto Therapeutics LLC, January 12, 2026), warnings and precautionsDopamine receptor antagonists, including neuroleptic agents that have dopamine D2 receptor antagonist properties (e.g., clozapine, olanzapine, ziprasidone), may reduce the effectiveness of CYCLOSET, and CYCLOSET may reduce the effectiveness of these agents.
Source: FDA drug label (Cycloset, NDA020866), Avvisto Therapeutics LLC, effective January 12, 2026 (SPL set e42ba916-16b9-4d1c-8d09-9d2fbb1b6c20), via openFDA
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 olanzapine label say about bromocriptine?
Olanzapine's label (effective March 5, 2026) and its 2 other brand-application labels do not name bromocriptine in these sections. A label lists what its studies and reports found; it is not a complete list.
Source: FDA drug label (Olanzapine), Macleods Pharmaceuticals Limited, effective March 5, 2026 (SPL set 8e095987-bdea-42f2-9550-c7155cf07d30), 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 | Olanzapine | |
|---|---|---|
| Labeled for | Parkinson's disease, Type 2 diabetes | Schizophrenia, Bipolar disorder, Depression |
| Boxed warning | No | Yes |
| Pharmacy cost (NADAC) | $1.61 per tablet 2.5 mg tablet | $0.147 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