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Abstract
Solid dispersions of triamterene or temazepam in polyethylene glycols or gelucire 44/14 have been investigated. The phase equilibria of the drugs and carriers were determined by Differential Thermal Analysis and Hot Stage Microscopy. Particle Size Analysis was carried out using double image microscopy, whilst phase solubility techniques and dissolution methods were used to study solubility, dissolution and ageing.
It has been shown that triamterene forms monotectics with polyethylene glycols and gelucire 44/14 and temzepam shows partial solubility. The effect of the carriers on particle size depends on the solubility of the drug in the carrier and size reduction is observed where the drug is soluble in the carrier.