What the FDA labels say about taking them together
Tacrolimus and tinidazole
Tinidazole's FDA label of December 27, 2021 names tacrolimus in its drug interactions section; the tacrolimus labels PlainMeds reads (4) do not name tinidazole. The tinidazole label: “Avoid during and up to 3 days after tinidazole therapy Lithium: Monitor serum lithium concentrations Cyclosporine, tacrolimus:”
Check it at the source: the tacrolimus FDA label on DailyMed (effective July 17, 2026, Stellon Biotech Inc.); the tinidazole FDA label on DailyMed (effective December 27, 2021, Mission Pharmacal Company).
What does the tacrolimus label say about tinidazole?
Tacrolimus's label (effective July 17, 2026) and its 3 other brand-application labels do not name tinidazole in these sections. A label lists what its studies and reports found; it is not a complete list.
Source: FDA drug label (Tacrolimus), Stellon Biotech Inc., effective July 17, 2026 (SPL set 6b89e8a4-9f11-42e3-8e79-fe617e7c461f), via openFDA; the full label on DailyMed
What does the tinidazole label say about tacrolimus?
Tinidazole label, drug interactionsAvoid during and up to 3 days after tinidazole therapy ( 7.1 ) Lithium: Monitor serum lithium concentrations ( 7.1 ) Cyclosporine, tacrolimus:
Source: FDA drug label (Tindamax), Mission Pharmacal Company, effective December 27, 2021 (SPL set a0d01539-8413-4703-94cc-d221918630a1), 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
| Tacrolimus | Tinidazole | |
|---|---|---|
| Labeled for | Organ transplant rejection, Eczema (atopic dermatitis) | n/a |
| Boxed warning | Yes | Yes |
| Pharmacy cost (NADAC) | $0.970 per gram 0.1% ointment | $2.35 per tablet 500 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