Eleven patients with asthma and aspirin hypersensitivity have been challenged with eight non-steroidal anti-inflammatory drugs. Each drug was given by mouth in at least three different doses and the patients' symptoms and peak expiratory flow (PEF) rates were observed over a three-hour period. Indomethacin 5 mg caused bronchoconstriction in all patients. Therapeutic doses of mefenamic or flufen...

Our objective was to examine the effect of an Iranian herbal drug in the treatment of primary dysmenorrhea. A randomized, double-blind, placebo-controlled pilot trial among 180 female students at Isfahan University dormitory aged 18 to 27 who suffered from primary dysmenorrhea was undertaken. The participants were randomly divided into three groups: herbal drug, mefenamic acid, and placebo. The...

High-pressure crystallisation has been successfully used as an alternative technique to prepare Form II of a non-steroidal anti-inflammatory drug, mefenamic acid (MA). A single crystal of Form II, denoted as high-pressure Form II, was grown at 0.3 GPa from an ethanolic solution by using a diamond anvil cell. A comparison of the crystal structures shows that the efficient packing of molecules in...

Recently we showed how crystallization in microemulsions could lead directly to the most stable polymorph, thereby leapfrogging Ostwald’s rule of stages. Here we consider in more details the crystallization of mefenamic acid from dimethylformamide microemulsions. Crystallization of mefenamic acid from bulk DMF has previously been shown to produce only the metastable Form II irrespective of the ...

Four cases of acute proctocolitis associated with non-steroidal anti-inflammatory drug therapy are presented. The drugs implicated were flufenamic acid, mefenamic acid, naproxen and ibuprofen. After resolution of symptoms and signs of proctocolitis three of the four patients were subsequently rechallenged with the implicated drug: in each there was a rapid relapse.

Mefenamic acid is characterized by a low oral bioavailability due to its slow dissolution and absorption. The purpose of this study was investigate the effect salt formation on mefenamic physical stability. Potassium, sodium lysine salts were prepared. resulting formed scanning electron microscopy, hot-stage Fourier transform infrared spectroscopy, differential calorimetry powder X-ray diffract...