Abacavir (ABC) i/ʌ.bæk.ʌ.vɪər/ is a nucleoside analog reverse transcriptase inhibitor (NRTI) used to treat HIV and AIDS. It is available under the trade name Ziagen (ViiV Healthcare) and in the combination formulations Trizivir (abacavir, zidovudine and lamivudine) and Kivexa/Epzicom (abacavir and lamivudine). It has been well tolerated: the main side effect is hypersensitivity, which can be severe, and in rare cases, fatal. Genetic testing can indicate whether an individual will be hypersensitive; over 90% of patients can safely take abacavir. However, in a separate study, the risk of heart attack increased by nearly 90%.
Viral strains that are resistant to zidovudine (AZT) or lamivudine (3TC) are generally sensitive to abacavir, whereas some strains that are resistant to AZT and 3TC are not as sensitive to abacavir.
Read more about Abacavir: Clinical Indications, Side Effects, Adverse Drug Reactions, Mechanism of Action, Pharmacokinetics, History