The gum of Acacia etbaica was collected from Klte Awulaelo district, Eastern Zone of Tigray region; paracetamol (batch no. 1706003, HEDEI JIHENG, Pharmaceuticals, Germany), PVP K-30 (BOAINKY, Pharmaceutical Ltd., India), and Acacia BP (batch no. 242, BOAINKY, Pharmaceutical Ltd., India) were kindly donated from Addis Pharmaceutical Factory Sh. Co. Lactose, magnesium stearate, potassium dihydrogen phosphate, sodium hydroxide, sodium chloride, sodium hydrogen phosphate dehydrate, acetone, HCl (LOBA CHEMIE PVT. LTD, England), maize starch (DBEBATS, India), talc (SISCO LAB, India), ethanol (Batch no. 026193, Fine Chemical General Trading, Ethiopia), and chloroform (CHEMIE PVT. LTD., England) were purchased from local market. All the chemicals were analytical grade and used as received.
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