Key takeaways
Lamivudine (Epivir) and interferon alfa-2b (Intron A) are both used to treat chronic hepatitis B, but they belong to different medication classes. Lamivudine is a nucleoside reverse transcriptase inhibitor (NRTI) that is also used to treat HIV infections in combination with other HIV medications, while interferon alfa-2b is a biologic used for certain cancers and viral infections, including hepatitis C and genital warts. Lamivudine is taken orally, typically once or twice daily, and is available in both brand and generic forms. In contrast, interferon alfa-2b was an injectable medication, but it has been discontinued and is no longer available in the United States. Common side effects of lamivudine include headache, nausea, and fatigue, whereas interferon alfa-2b could cause flu-like symptoms, fatigue, and depression. Lamivudine has few drug interactions, but it requires regular blood tests to monitor liver and kidney health. Interferon alfa-2b, on the other hand, was known for its potential to cause more severe side effects and required careful monitoring.
