In human clinical studies, epitalon and epithalamin both significantly increased telomere lengths in the blood cells of patients of ages 60-65 and 75-80, and their efficacy was comparable to one another.
Epitalon and epithalamin appear to restore melatonin secretion by the pineal gland in both aged monkeys and humans.
A human clinical trail conducted on a sample of retinitis pigmentosa patients found that epitalon produced a positive clinical effect in 90% of cases in the treated group.
In another human clinical trial conducted on a sample of pulmonary tuberculosis patients, epitalon did not appear to correct pre-existing structural aberrations of chromosomes associated with telomere degradation, but did appear to exert a protective effect against the future development of additional chromosomal aberrations.
A human prospective cohort study conducted on a sample of 266 people over age 60 demonstrated that treatment with epithalamin, the pineal gland extract upon which epitalon is based, produced a 1.6–1.8-fold reduction in mortality during the following 6 years, a 2.5-fold reduction in mortality when combined with thymalin, and a 4.1-fold reduction in mortality when combined with thymalin and administered annually instead of only once at study onset.
Another prospective cohort study on a sample of 79 coronary. patients spanning in excess of 12 years found improved metrics of physical endurance,circadian rhythm, and carbohydrate and lipid metabolism in the treated group relative to the control group following 3 years of biannual epithalamin treatments, as well as a 50% lower rate of cardiovascular mortality, a 50% lower rate of cardiovascular failure and serious respiratory disease, and a 28% lower rate of overall mortality.