Concomitant use w/ dimercaprol, raltitrexed. Increased level w/ ACE inhibitors, dimercaprol, ascorbic acid, chloramphenicol. Decreased level of bictegravir, Fe salts, captopril, cephalosporins, fluoroquinolones, levodopa, levothyroxine, methyldopa, mycophenolate mofetil, penicillamine, fosphenytoin, phenobarb, phenytoin, primidone. Decreased level by antacid, Ca salts, digestive enzymes, H
2 antagonists, PPIs, sulfasalazine.