Demand for vitamins increased so dramatically and so quickly following the announcement of COVID-19 in March 2020, that many retail outlets struggled to maintain a supply of these products. Widespread stockpiling and, in some cases, panic buying of vitamins C, D and E meant that the government was forced to step in to regulate the supply of these products.
Source: https://marketreportsonsaudiarabia.com/report/308388/vitamins-in-saudi-arabia