BACKGROUND Persicaria hydropiper (Linn.) Delarbre is a common plant of Polygonaceae family commonly called Bishkatali in Bangladesh. Leaves of the plant are traditionally used in the treatment of rheumatic pain, gout, and skin diseases such as ringworms, scabies, boils, abscesses, carbuncles, bites of snakes, dogs or insects. This study evaluated the antinociceptive effect of the methanol extra...

The alcoholic extract of the roots of Polygonum hydropiper Linn. was fractionated by column adsorption chromatography. The various fractions obtained were tested for antifertility activity in female albino rats. Petroleum ether, petroleum ether +benzene (1:1 v/v) and benzene +chloroform (1:1 v/v) fractions prevented pregnancy in 8/10, 6/10 and 6/10 albino rats, respectively, while the first two...