Who should not take TIKOSYN?

Do not take TIKOSYN if you:

  • Have an irregular heartbeat condition called long QT syndrome
  • Have kidney problems or are on kidney dialysis
  • Are allergic to dofetilide in TIKOSYN
  • Take any of these medicines:

Cimetidine (Tagamet®, Tagamet HB®)

Verapamil (Calan®, Calan SR®, Covera-HS®, Isoptin®, Isoptin SR®, Verelan®, Verelan PM®, Tarka®)

Ketoconazole (Nizoral®, Xolegel®, Extina®)

Trimethoprim alone (Proloprim®, Trimpex®) or the combination of trimethoprim and sulfamethoxazole (Bactrim®, Septra®, Sulfatrim®)

Prochlorperazine (Compazine®, Compro®)

Megestrol (Megace®)

Dolutegravir (Tivicay®)

Hydrochlorothiazide alone or in combination with other medicines (such as Esidrix®, Ezide®, Hydrodiuril®, Hydro-Par®, Microzide®, or Oretic®)

Ask your doctor if you are not sure if any of your medicines are the kind listed above.

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