There Constitutions and Homeopathy 1.Hydrogenoid-Excess of hydrogen and water in blood. Corresponds to Hahnemann's Sycosis✅ 2.Oxygenoid-:Excess of Corresponds to Hahnemann's Syphilis ✅ 3.Carbon-nitrogenoid - Excess of carbonand nitrogen i.e insufficient oxygenation. Corresponds to Hahnemann's Psora✅