What the FDA labels say about taking them together
Caffeine and ofloxacin
Ofloxacin's FDA label (Ocuflox) of June 13, 2024 names caffeine in its drug interactions section; the caffeine labels PlainMeds reads (2) do not name ofloxacin. The ofloxacin label: “However, the systemic administration of some quinolones has been shown to elevate plasma concentrations of theophylline, interfere with the metabolism of caffeine, and enhance the effects of the oral anticoagulant …”
Check it at the source: the caffeine FDA label on DailyMed (effective July 29, 2026, Sagent Pharmaceuticals); the ofloxacin FDA label on DailyMed (effective July 18, 2024, Amneal Pharmaceuticals NY LLC).
What does the caffeine label say about ofloxacin?
Caffeine's label (effective July 29, 2026) and its 1 other brand-application label do not name ofloxacin in these sections. A label lists what its studies and reports found; it is not a complete list.
Source: FDA drug label (caffeine citrate), Sagent Pharmaceuticals, effective July 29, 2026 (SPL set 5f38c395-0093-4afd-89ec-f96e5dc0934a), via openFDA; the full label on DailyMed
What does the ofloxacin label say about caffeine?
Ocuflox label (Allergan, Inc., June 13, 2024), drug interactionsHowever, the systemic administration of some quinolones has been shown to elevate plasma concentrations of theophylline, interfere with the metabolism of caffeine, and enhance the effects of the oral anticoagulant warfarin and its derivatives, and has been associated with transient elevations in serum creatinine in patients receiving cyclosporine concomitantly.
Source: FDA drug label (Ocuflox, NDA019921), Allergan, Inc., effective June 13, 2024 (SPL set 7aab4449-3dda-4e2c-8e40-b3244a548bf5), via openFDA
Source: FDA drug label (Ofloxacin), Amneal Pharmaceuticals NY LLC, effective July 18, 2024 (SPL set ba37e2a0-1bf7-41ca-bddd-35fcb77f87de), 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
| Caffeine | Ofloxacin | |
|---|---|---|
| Labeled for | n/a | Bacterial infections |
| Boxed warning | No | No |
| Pharmacy cost (NADAC) | $0.083 per tablet 200 mg tablet | $1.24 per mL 0.3% 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