List and explain one or two adverse reactions for the selected agent that would cause you to change therapy.

When choosing a therapy agent, liver damage is an adverse reaction that I would consider before deciding. It can occur from certain drugs such as chemotherapy or statins, which may cause elevated enzyme levels in the liver. This could lead to symptoms like nausea, abdominal pain or fatigue.

Additionally, another adverse reaction that would require reevaluation is skin irritation; this could indicate an allergic response caused by either topical applications or oral medications causing inflammation & itchiness around affected areas. It is vital to stop using the medication immediately in these situations before further damage can occur. These examples show why it is important to monitor patients throughout their journey so that they can receive appropriate treatment if unexpected side effects occur.