What the FDA labels say about taking them together
Carbachol and tropicamide
Tropicamide's FDA label of September 1, 2023 names carbachol in its drug interactions section; the carbachol label PlainMeds reads does not name tropicamide.
Check it at the source: the carbachol FDA label on DailyMed (effective February 10, 2023, Alcon Laboratories, Inc.); the tropicamide FDA label on DailyMed (effective September 1, 2023, Bausch & Lomb Incorporated).
What does the carbachol label say about tropicamide?
Carbachol's label (effective February 10, 2023) does not name tropicamide in these sections. A label lists what its studies and reports found; it is not a complete list.
Source: FDA drug label (MIOSTAT), Alcon Laboratories, Inc., effective February 10, 2023 (SPL set f28d7a56-e079-4a8b-ad81-9a97c780de67), via openFDA; the full label on DailyMed
What does the tropicamide label say about carbachol?
Tropicamide label, drug interactionsDrug Interactions Tropicamide may interfere with the antihypertensive action of carbachol, pilocarpine, or ophthalmic cholinesterase inhibitors.
Source: FDA drug label (Tropicamide), Bausch & Lomb Incorporated, effective September 1, 2023 (SPL set 892b78c8-36bc-47d3-850e-502899b48fb9), 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
| Carbachol | Tropicamide | |
|---|---|---|
| Labeled for | n/a | n/a |
| Boxed warning | No | No |
| Pharmacy cost (NADAC) | n/a | $0.552 per mL 1% eye drops |
| 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