N Fleeman, 1, C Martin Saborido, 2 K Payne, 3 A Boland, 1 R Dickson, 1 Y Dundar, 1 A Fern??ndez Santander, 4 S Howell, 5 W Newman, 6 J Oyee, 1 and T Walley 7 stromectol for sale All mixtures containing varying concentrations of these drugs were found to develop a precipitate upon mixing and were not analysed by HPLC