t take tsst take ½ tablet t1t take one tablet t1sst take 1½ tablets qd once daily bid twice a day tid three times a day qid four times a day +qd take one to two tablets 1hs take one tablet by mouth at bedtime 2hs take two tablets by mouth at bedtime ppa as needed for pain prsp as needed for severe pain prn as needed t take tsst take ½ tablet t1t take one tablet t1sst take 1½ tablets ppa as needed for pain prsp as needed for severe pain prn as needed q4h every 4 hours q6h every 6 hours q46h every 4 to 6 hours q812h every 8 to 12 hours q12h every 12 hours