THE BULLWHIP EFFECT ON THE DRUG SUPPLY CHAIN CONSIDERING INTERNATIONAL SANCTIONS WITH A DYNAMIC SYSTEM APPROACH

The Bullwhip effect phenomenon as one of the main causes of reducing the efficiency of supply chain performance occurs when changes in demand fluctuate widely during the supply chain. In the present study, it has been shown that the continuation of the sanctions process in Iran can strengthen the sector of domestic production, but with the reduction of drug imports and the lack of technology and sufficient capacity in the production of Desferrioxamine, the country will face a drug crisis. And people and patients' satisfaction will be greatly reduced. Therefore, in order to improve the situation of drugs and reduce the whip effect in the drug supply chain, four government protection policies for consumers and producers were directly and indirectly examined. The data were evaluated with the help of Wensum software and the results revealed, lowering the price of medicine, increasing the level of people's satisfaction, reducing the whip effect, increasing the profit of supplier, distributor and overall profit of the drug supply chain as policies for improving the current situation.