A method generally includes co-administering to a subject a composition that includes an antigen and a cytokine signaling immunomodulator. The method can be for treating a subject for abuse of a drug, treating a subject for toxicity from drug abuse, treating a subject for infection by a pathogen, treating a subject for a non-communicable disease, or for increasing antibody production against the antigen. The antigen can be component of a vaccine. The cytokine-signaling immunomodulator is effective to improve the subject's immune response to the antigen compared to the subject's immune response to the antigen without the cytokine-signaling immunomodulator.
