Brand Name Chemical Name Savella milnacipran Sectral acebutolol Serevent salmeterol xinafoate Seroquel quetiapine Sildenafil Citrate sildenafil citrate Silvadene silver sulfadiazine Sinemet carbidopa & levodopa Sinemet CR carbidopa & levodopa Singulair montelukast Skelaxin metaxalone Soma carisoprodol Soriatane acitretin Spiriva tiotropium bromide Sporanox itraconazole Stablon tianeptin Stalevo carbidopa/levodopa/entacapone Starlix nateglinide Strattera atomoxetine Stromectol ivermectin Sular nisoldipine Suprax cefixime Sustiva efavirenz Symbicort budesonide / efomoterol fumarate dihydrate Symmetrel amantadine hydrochloride Synalar fluocinolone acetate Synthroid levothyroxine sodium Synvisc Hylan G-F 20