<unk>  sodium (TBC-11251) is a medication for the treatment of pulmonary arterial hypertension (PAH). It was marketed as Thelin by Encysive Pharmaceuticals until Pfizer purchased Encysive in February 2008. In 2010, Pfizer voluntarily removed<unk>  from the market due to concerns about liver toxicity.
Sitaxentan
Bosentan
Macitentan
Ambrisentan
Darusentan
Vericiguat
Tafamidis
Riociguat