In the pharmacy app, as mentioned earlier, it is possible to work with drugs with a similar active ingredient. In order to do this, in the sales window in the field Product name, you can use the keyword "SIMILAR", and then write the active ingredient. For example, coal.
After pressing Enter, we will receive a list of products for which the same active ingredient was indicated in the nomenclature. After that, the client can be offered to buy an analogue of the product, which for some reason is not in stock. This will help increase your sales.
Then you can simply select the product we need and make a sale.