What the FDA labels say about taking them together
Heparin and olsalazine
Olsalazine's FDA label of May 15, 2026 names heparin in its drug interactions section; the heparin labels PlainMeds reads (4) do not name olsalazine.
Check it at the source: the heparin FDA label on DailyMed (effective November 28, 2025, Fresenius Kabi USA, LLC); the olsalazine FDA label on DailyMed (effective May 15, 2026, Viatris Specialty LLC).
What does the heparin label say about olsalazine?
Heparin's label (effective November 28, 2025) and its 3 other brand-application labels do not name olsalazine in these sections. A label lists what its studies and reports found; it is not a complete list.
Source: FDA drug label (Heparin Sodium), Fresenius Kabi USA, LLC, effective November 28, 2025 (SPL set d55b4a63-0c04-4874-b74f-9e9b9e8b008c), via openFDA; the full label on DailyMed
What does the olsalazine label say about heparin?
Olsalazine label, drug interactionsDiscontinue DIPENTUM prior to the initiation of a low molecular weight heparin or heparinoid.
Source: FDA drug label (Dipentum), Viatris Specialty LLC, effective May 15, 2026 (SPL set 8512d0c6-db4e-4673-b3b4-28975c18413f), 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
| Heparin | Olsalazine | |
|---|---|---|
| Labeled for | Blood clots (DVT and PE), Atrial fibrillation | Crohn's disease and ulcerative colitis |
| Boxed warning | No | No |
| Pharmacy cost (NADAC) | $1.18 per mL 5,000 unit/mL vial | $15.70 per capsule 250 mg capsule |
| Shortage now | In shortage | 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