What the FDA labels say about taking them together
Heparin and tetradecyl hydrogen
Tetradecyl hydrogen's FDA label of August 17, 2021 names heparin in its drug interactions section; the heparin labels PlainMeds reads (4) do not name tetradecyl hydrogen.
Check it at the source: the heparin FDA label on DailyMed (effective November 28, 2025, Fresenius Kabi USA, LLC); the tetradecyl hydrogen FDA label on DailyMed (effective August 17, 2021, Mylan Institutional LLC).
What does the heparin label say about tetradecyl hydrogen?
Heparin's label (effective November 28, 2025) and its 3 other brand-application labels do not name tetradecyl hydrogen 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 tetradecyl hydrogen label say about heparin?
Tetradecyl hydrogen label, drug interactionsThe physician must use judgment and evaluate any patient taking antiovulatory drugs prior to initiating treatment with Sotradecol. (See ADVERSE REACTIONS section.) Heparin should not be included in the same syringe as Sotradecol, since the two are incompatible.
Source: FDA drug label (Sotradecol), Mylan Institutional LLC, effective August 17, 2021 (SPL set f1756c28-dcd2-4b49-be62-07ca20682018), 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 | Tetradecyl hydrogen | |
|---|---|---|
| Labeled for | Blood clots (DVT and PE), Atrial fibrillation | n/a |
| Boxed warning | No | No |
| Pharmacy cost (NADAC) | $1.18 per mL 5,000 unit/mL vial | n/a |
| 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