High Quality Content by WIKIPEDIA articles! Atovaquone (alternative spelling: atavaquone) is a chemical compound that belongs to the class of naphthalenes. Atovaquone is a hydroxy-1,4-naphthoquinone, an analog of ubiquinone, with antipneumocystic activity. Its average wholesale price is about US$2.13 per standard 250 mg. tablet. It is also manufactured in the US in the liquid form, or oral suspension, under the brand name Mepron, a 30 day supply of which (300ml), is about $1,600.00 without insurance coverage.