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Flolan contains the active substance epoprostenol which belongs to a group of medicines called prostaglandin, which stops blood from clotting and widens the blood vessels.

Flolan is used to treat a lung condition called ‘pulmonary arterial hypertension’. This is where the pressure is high in the blood vessels in the lungs. Flolan widens the blood vessels to lower the blood pressure in the lungs.

Flolan is used to prevent blood clotting during kidney dialysis in emergency situations when heparin cannot be used.

If you get any side effects, talk to your doctor, pharmacist or nurse. This includes any possible side effects not listed on this website or in the product package leaflet. You can also report side effects directly to the HPRA Pharmacovigilance, Earlsfort Terrace, Dublin 2; Tel: +353 1 6764971; Fax: +353 1 6762517. Website:;

By reporting side effects you can help provide more information on the safety of this medicine.

Flolan is a registered trade mark of the GlaxoSmithKline group of companies.