Serevent Diskus®
(salmeterol xinafoate)

Simcor®
(simvastatin/niacin extended-release)

Skelaxin
(metaxalone)

Sonata
(zaleplon)

Spectazole® Cream
(econazole nitrate)

Sporanox®
(itraconazole)

Stalevo®
(carbidopa, levodopa and entacapone)

Starlix®
(nateglinide)

Sustiva®
(efavirenz)

Synarel®
(nafarelin acetate solution)

Synthroid®
(levothyroxine sodium tablets, USP)