Some side effects with Trizivir, while occurring infrequently, are potentially serious and should be reported immediately to your healthcare provider. These include, but are not limited to:
Anemia
Frequent infections, which may be a sign of low neutrophil levels in the blood (known medically as neutropenia)
Unusual bleeding or bruising, which may be a sign of low blood platelets (known as thrombocytopenia)
Abacavir (one of the components of Trizivir) can cause very serious (sometimes life-threatening) allergic reactions. However, some of the symptoms of an allergic reaction to abacavir are common and may not actually be due to an allergic reaction. In order to help people know if a serious allergic reaction is occurring, the manufacturer of Trizivir has developed a system involving groups of symptoms. It is recommended that you stop taking Trizivir and call your healthcare provider immediately if you develop symptoms from two or more of the following groups of symptoms:
Group 1 -- Fever
Group 2 -- Rash
Group 3 -- Nausea, vomiting diarrhea, or abdominal pain (stomach pain)
Group 4 -- Extreme fatigue, a general ill feeling (malaise), or achiness
Group 5 -- Shortness of breath, cough, or a sore throat.