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What the FDA labels say about taking them together

Cilostazol and cladribine

Cladribine's FDA label of May 27, 2026 names cilostazol in its drug interactions section; the cilostazol label PlainMeds reads does not name cladribine. The cladribine label: “Prevention or Management; Avoid co-administration of potent ENT1, CNT3, or BCRP transporter inhibitors during the 4 to 5 day MAVENCLAD treatment cycles. …”

Check it at the source: the cilostazol FDA label on DailyMed (effective September 10, 2026, Apotex Corp.); the cladribine FDA label on DailyMed (effective May 27, 2026, EMD Serono, Inc.).

What does the cilostazol label say about cladribine?

Cilostazol's label (effective September 10, 2026) does not name cladribine in these sections. A label lists what its studies and reports found; it is not a complete list.

Source: FDA drug label (cilostazol), Apotex Corp., effective September 10, 2026 (SPL set ceac1ae3-c343-28ca-c083-b748d21a15e6), via openFDA; the full label on DailyMed

What does the cladribine label say about cilostazol?

Cladribine label, drug interactions

Prevention or Management; Avoid co-administration of potent ENT1, CNT3, or BCRP transporter inhibitors (e.g., ritonavir, eltrombopag, curcumin, cyclosporine, dilazep, nifedipine, nimodipine, cilostazol, sulindac, dipyridamole, or reserpine) during the 4 to 5 day MAVENCLAD treatment cycles. If this is not possible, consider selection of alternative concomitant drugs with no or minimal ENT1, CNT3, or BCRP transporter inhibiting properties. If this is not possible, dose reduction to the minimum mandatory dose of drugs containing these compounds, separation in the timing of administration, and careful patient monitoring is recommended.

Source: FDA drug label (Mavenclad), EMD Serono, Inc., effective May 27, 2026 (SPL set 9c75e30a-a410-40f1-b653-04d532bd9144), 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

9Cilostazol generic labelers
6Cladribine generic labelers
CilostazolCladribine
Labeled forn/aMultiple sclerosis, Leukemia, lymphoma and myeloma
Boxed warningYesYes
Pharmacy cost (NADAC)$0.132 per tablet 100 mg tabletn/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?