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What the FDA labels say about taking them together

Dacarbazine and trabectedin

Trabectedin's FDA label of June 29, 2026 names dacarbazine in its warnings and precautions section; the dacarbazine label PlainMeds reads does not name trabectedin.

Check it at the source: the dacarbazine FDA label on DailyMed (effective October 20, 2022, Fresenius Kabi USA, LLC); the trabectedin FDA label on DailyMed (effective June 29, 2026, Apotex Corp.).

What does the dacarbazine label say about trabectedin?

Dacarbazine's label (effective October 20, 2022) does not name trabectedin in these sections. A label lists what its studies and reports found; it is not a complete list.

Source: FDA drug label (Dacarbazine), Fresenius Kabi USA, LLC, effective October 20, 2022 (SPL set b6b97e41-5f15-498c-abfb-d8443ea4d216), via openFDA; the full label on DailyMed

What does the trabectedin label say about dacarbazine?

Trabectedin label, warnings and precautions

Elevations in creatine phosphokinase (CPK) occurred in 122 (32%) of the 378 patients receiving trabectedin, including Grade 3 or 4 CPK elevation in 24 patients (6%), compared to 15 (9%) of the 172 patients receiving dacarbazine with any CPK elevation, including 1 patient (0.6%) with Grade 3 CPK elevation.

Source: FDA drug label (Yondelis, NDA207953), Janssen Products, LP, effective January 6, 2026 (SPL set 472bd78e-be17-4b9d-90f4-9482c3aec9ff), via openFDA

Source: FDA drug label (EVDI), Apotex Corp., effective June 29, 2026 (SPL set c1d50f5c-4202-27f3-4798-a9708114ddea), 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

3Dacarbazine generic labelers
0Trabectedin generic labelers
DacarbazineTrabectedin
Labeled forn/an/a
Boxed warningYesNo
Pharmacy cost (NADAC)n/an/a
Shortage nowNo current entryNo 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?