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.
Dosage and Method of Administration Nitrofurantoin should be taken with food or milk. Acute, Uncomplicated Urinary Tract Infections (acute cystitis) Adults: Usual dose 50-100 mg four times daily for 7 days.osage and Method of Administration Nitrofurantoin should be taken with food or milk. Acute, Uncomplicated Urinary Tract Infections (acute cystitis) Adults: Usual dose 50-100 mg four times daily for 7 days.