After taking SILENOR, you should only do activities needed to get ready for bed. Hoboken, NJ: John Wiley & Sons. Women of childbearing age should be cautioned against becoming pregnant while on albendazole or within 1 month of completing treatment. Etofenamate may decrease the antihypertensive activities of Carvedilol. Increases in serum lithium concentrations and lithium toxicity have been reported with concomitant use of irbesartan or thiazide diuretics. Effervescent antacids may also contain aspirin, [8] sodium carbonate, or tartaric acid.