Which of the following medications is likely to cause an adverse effect?

The assertion that every medication has the potential for adverse effects is accurate because all medications, whether they are over-the-counter, prescription, or herbal supplements, can interact with the body in various ways. The body processes medications differently based on individual factors such as genetics, existing health conditions, and other medications being taken.

This variability means that even well-tolerated medications can lead to adverse effects in certain situations. For example, some individuals may experience side effects from non-prescription medications that are commonly considered safe, or they might have unexpected reactions to natural herbal supplements. This highlights the importance of monitoring patient responses to any type of medication and understanding that what may be safe for one person could cause harm to another.

With this understanding, it's clear that the risk of adverse effects is an inherent aspect of all medications, reinforcing the necessity for patients to communicate openly with healthcare providers about all substances they are using, including non-prescription and herbal products.