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.
Nitazoxanide was approved for use in the United States in 2004 and current indications are for diarrhea due to infection with Giardia lamblia or Cryptosporidium parvum. Nitazoxanide is available in tablets 500 mg and as an oral suspension (100 mg/5 mL) under the brand name Alinia. The typical dose for treating giardiasis and cryptosporidiosis in adults is 500 mg orally every 12 hours for 3 days. Nitazoxanide is generally well tolerated; side effects are usually mild and can include diarrhea, gastrointestinal upset, headaches and hair loss. Hepatotoxicity Nitazoxanide therapy has not been associated with elevations in serum aminotransferase levels nor with clinically apparent acute liver injury.