Drug side effects are more often than not preventable. If taking over the counter medications, it is important to start low, which means , the treatment should be started at the lowest effective dose, and increasing the dose only if necessary. Knowing your history of drug interactions or adverse reactions are red flags that should be taken into consideration. More importantly, when buying an OTC medication, ensure that you read the package insert. If necessary, you can also research about the product online. Of course, you can always ask from your physician.
It is best to proceed with caution. Even before filling prescription medications, I still do my research on my own before I hit the pharmacy. There’s nothing better than being well informed.