If a joint return has been filed for a tax year, the spouses may file separate returns before the due date of the original return, determined without regard to any extensions. Husband and wife file a joint return on 3/15/13; they may change to married filing separate no later than 4/15/13.
Children â¥ 40 kg may receive adult doses. Below that weight, the oral dosage is ranitidine 2 mg/kg q 12 h and cimetidine 10 mg/kg q 12 h. For GERD, H 2 blockers are now mostly used for pain management. Gastritis heals with famotidine or ranitidine given bid for 8 to 12 wk.uration of action is proportional to dose and ranges from 6 to 20 h. Doses should often be reduced in elderly patients. For duodenal ulcers, once daily oral administration of cimetidine 800 mg, ranitidine 300 mg, famotidine 40 mg, or nizatidine 300 mg given at bedtime or after dinner for 6 to 8 wk is effective.
In children, the dose can range, depending on body weight, from 25 mg to 100 mg per kilogram of body weight per day (mg/kg/day). The Keflex dose is divided and taken three to four times a day for 7 to 14 days.Children should generally be limited to 4000 mg or less per day. The recommended Keflex dosing for the prevention of bacterial endocarditis in adults is 2000 mg, taken one hour before a surgical procedure is performed.he recommended dosage of Keflex for the prevention of bacterial endocarditis in children is 50 mg per kilogram of body weight, up to a maximum of 2000 mg, taken one hour before a surgical procedure is performed.