Thymalin + Epitalon (Epithalamin)
Pairs a thymic-immune bioregulator with a pineal-neuroendocrine bioregulator as a seasonal "two-axis" longevity course, run together because the founding human trial itself found the combination beat either compound alone on its mortality endpoint (2.5-fold combined vs. 2.0-2.1-fold for Thymalin alone and 1.6-1.8-fold for Epithalamin alone).
Pairs a thymus/immune peptide (Thymalin) with a pineal/sleep-hormone peptide (Epitalon), each aimed at a <b>different aging pathway</b> — the idea being that hitting two separate systems does more than either one alone.