What the FDA labels say about taking them together
Azathioprine and mycophenolic acid
Mycophenolic acid's FDA label of July 29, 2026 names azathioprine in its drug interactions section; the azathioprine label PlainMeds reads does not name mycophenolic acid.
Check it at the source: the azathioprine FDA label on DailyMed (effective November 8, 2025, Sebela Pharmaceuticals Inc.); the mycophenolic acid FDA label on DailyMed (effective July 29, 2026, Novartis Pharmaceuticals Corporation).
What does the azathioprine label say about mycophenolic acid?
Azathioprine's label (effective November 8, 2025) does not name mycophenolic acid in these sections. A label lists what its studies and reports found; it is not a complete list.
Source: FDA drug label (IMURAN), NDA016324 (Legacy), as published by Sebela Pharmaceuticals Inc., effective November 8, 2025 (SPL set 606101a0-6244-7eff-e053-2a91aa0acadd), via openFDA; the full label on DailyMed
What does the mycophenolic acid label say about azathioprine?
Mycophenolic acid label, drug interactionsGiven that azathioprine and MMF inhibit purine metabolism, it is recommended that Myfortic not be administered concomitantly with azathioprine or MMF.
Source: FDA drug label (Myfortic), Novartis Pharmaceuticals Corporation, effective July 29, 2026 (SPL set eed26501-890d-4ff6-88e7-6dbea4726e53), 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
| Azathioprine | Mycophenolic acid | |
|---|---|---|
| Labeled for | Organ transplant rejection, Rheumatoid arthritis | Organ transplant rejection |
| Boxed warning | Yes | Yes |
| Pharmacy cost (NADAC) | $0.124 per tablet 50 mg tablet | $0.0996 per tablet 180 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