Which of the following is NOT a side effect of iron-containing medications like Trinsicon?

Iron-containing medications, such as Trinsicon, are commonly associated with several side effects due to their composition and the way they interact with the gastrointestinal system. Stomach irritation is a well-documented effect, as iron can be harsh on the stomach lining, leading to discomfort and irritation.

Additionally, constipation and diarrhea can both occur with iron supplementation. These effects happen because iron can alter the normal function of the intestines, leading to variability in bowel habits.

Tarry stools are another significant side effect of iron supplements. This occurs because unabsorbed iron can darken the stool, leading to the characteristic black or tarry appearance. This finding is often noted and can be alarming, but it is typically benign and expected with iron use.

In contrast, drowsiness is not typically associated with iron-containing medications. Instead, the side effects that are more commonly reported focus on gastrointestinal issues rather than any influence on the central nervous system that would lead to sedation or fatigue. This distinction is important for patients to understand, as they might confuse various side effects from other medications or conditions that might cause drowsiness.