While Daraprim can be an effective treatment, it does come with potential side effects. Common issues include vomiting, loss of appetite, and in some cases, allergic reactions like hives, difficulty breathing, and swelling of the face, lips, tongue, or throat. More serious side effects can include signs of blood problems (easy bruising or bleeding, high fever, severe tiredness), sore throat, and severe skin reactions. If you face any side effects, consult your doctor right away.