Isoprinosine

Isoprinosine, also known as inosine pranobex or methisoprinol, is a synthetic compound that has been investigated for its immunomodulatory and antiviral properties. It is a complex of inosine (a nucleoside) and p-acetamidobenzoic acid (a salt of p-aminobenzoic acid) with N,N-dimethylamino-2-propanol. This combination is thought to enhance the body's immune response and potentially inhibit the replication of certain viruses.

The mechanism of action of isoprinosine is believed to involve the stimulation of T-lymphocytes and natural killer (NK) cells, key components of the adaptive and innate immune systems, respectively. It may also influence cytokine production, which are signaling molecules that regulate immune responses. These effects are thought to contribute to its potential efficacy in treating viral infections.

Isoprinosine has been studied for its use in a variety of viral conditions, including herpes simplex virus infections, human papillomavirus (HPV) infections, and subacute sclerosing panencephalitis (SSPE), a rare and serious complication of measles. However, the clinical evidence supporting its effectiveness in many of these indications varies, and its use is not universally approved or recommended by all health authorities. Side effects are generally reported as mild and can include gastrointestinal upset, dizziness, and fatigue. Further research continues to explore its therapeutic potential and optimal use.