The present disclosure provides methods and compositions for reactivating latent immunodeficiency virus in an immunodeficiency virus-infected cell. The methods generally involve contacting an immunodeficiency virus-infected cell with a synergistically effective amount of an inhibitor of cytosine methylation and an NF-κB activator. The present disclosure provides methods and compositions for reducing the reservoir of latent immunodeficiency virus in an individual, and for treating an immunodeficiency virus infection in an individual.