Tyrvaya

Varenicline (trade name Chantix and Champix) is a medication used for smoking cessation.[4][6] Varenicline is also used for the treatment of dry eye disease.[5][7] The most common side-effects include nausea (feeling sick), insomnia (difficulty sleeping), abnormal dreams, headache and nasopharyngitis (inflammation of the nose and throat).[6] It is a high-affinity partial agonist for the α4β2 nicotinic ac... [wikipedia]