The current state of the economy, which is characterized by dynamism, a high degree of environmental uncertainty, significant technological transformations, requires a quantitative assessment of the development of socio-economic processes. In such con-ditions, marketing activities aimed at achieving the goals of the enterprise and meeting the needs of consumers, usually based on the study of markets for individual products, identifying prevailing trends, developing marketing strategies. The ability to predict future prospects increases the success of marketing activities of any enterprise. Therefore, forecasting sales of a product is always a pressing issue. Solving the problem of forecasting plays a crucial role in the processes of both strategic planning and operational management in various fields of science and technology. To ensure competitiveness, domestic analysts use various economic and mathematical methods and models that allow forecasting economic and financial performance of the enterprise, optimize the management system and more. The scientific article considers the process of analysis and econometric modeling for sales of the varicose veins drug (to make this research as objective as possible, the name of the studied drug is conditional – "Veiner"). Correlation-regression and factor analysis of factors that have a direct impact on drug sales is performed. The influence of each factor on the studied variable is estimated and the time series is modeled. In addition, a detailed analysis of the studied indicator (sales of the drug in pieces for three full years) was performed using the autocorrelation function and also the method of the first differences to determine the nature of the time series. The results of econometric modeling allowed to identify the main factors in-fluencing the sale of the medicine drug. After that, short-term and long-term forecasting, based on the obtained results, was carried out. Taking into account that the projected results reproduced accurately enough the actual sales of the drug, it can be said that the used method can be applied to similar researches.Keywords: drug market, drug sales, modeling, time series, correlation-regression analysis, multiple regression, forecasting. В даній статті розглянуто процес дослідження та економетричного моделювання продажів лікарського препарату від варикозу (назва досліджуваного препарату є умовною – «Вейнер»). Проведено кореляційно-регресійний та факторний аналіз чинників, які мають безпосередній вплив на продажі препарату. Оцінено вплив кожного фактору на досліджувану величину і потім проведене моделювання часового ряду. Окрім того, проведено детальний аналіз досліджуваного показника (обсяги продажів лікарського препарату в штуках) за допомогою автокореляційної функції і також методу перших різниць, щоб визначити природу ряду. Результати економетричного моделювання дали змогу виявити головні чинники впливу на продажі лікарського препарату «Вейнер», а також здійснити прогнозування в короткостроковій та довгостроковій перспективі.Ключові слова: ринок лікарських засобів, продажі лікарських препаратів, моделювання, часовий ряд, кореляційно-регресійний аналіз, множинна регресія, прогнозування.
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