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.
Ciprofloxacin Dosage in Adults For ciprofloxacin tablets, the usual dosage is between 250 mg and 750 mg every 12 hours, depending on the type of infection. For intravenous (IV) ciprofloxacin, the usual dose is between 200 mg and 400 mg every 8 or 12 hours. The usual dosage for ciprofloxacin extended-release tablets is 500 mg to 1000 mg once a day. The length of treatment will vary, depending on the type and severity of the infection. It may be as short as a single dose for treating certain gonorrhea infections or as long as the recommended 60 days for the treatment of anthrax exposure.