What are reactions to medicines other than the one intended called?

Reactions to medicines that occur in addition to the primary intended effect are known as side effects. These are generally considered to be secondary effects that can occur alongside the therapeutic benefits of a medication. While some side effects may be mild and tolerable, others can be more significant and may require medical attention. Understanding side effects is crucial as they can impact a patient’s adherence to medication regimens and overall health outcomes.

Therapeutic effects, on the other hand, are the desired and intended outcomes of a medication. Adverse effects encompass serious, harmful reactions that may require discontinuation of the medication, while allergic reactions are specific immune responses that can occur in certain individuals. Each of these terms describes different aspects of pharmacological interactions, emphasizing the importance of distinguishing between them in a clinical context.