This section is from the book "A Practitioner's Handbook Of Materia Medica And Therapeutics", by Thos. S. Blair. Also available from Amazon: A Practitioner's handbook of Materia Medica and Therapeutics.
Lycopodium, Club Moss. The sporules are used as a dusting powder in regular medicine.
In sectarian practice, lycopodium is esteemed as a valuable remedy. As a matter of fact, the sporules are inert when ingested in their natural state, but when triturated or comminuted 47% of the resulting paste is a bland oil with properties said to resemble sandal-wood oil therapeutically. In addition to this oil, there are volatile bases which have not been adequately investigated, but presumably have an influence in stimulating tissue metabolism. They are irritants, but are carminative when well diluted. Hence, although the sectarians are derided for using this agent internally, a little thought will show that the alcoholic tincture and the low triturations contain quite active substances. It is with regret that I cannot supply full physiologic data, but chemically the active bases are akin to methylamine and probably are partially combined with phosphoric anhydride, and to work out the physiologic action would be a complex proposition. In large doses (ec. tr., 10 to 15 I.) lycopodium is of value in gonorrhea after the subsidence of acute symptoms, and in gleet. Give well diluted in water and glycerine.
In small doses (ec. tr., 1/2 to 2 I.; @, I to 4 I.) it is adapted to urinary and digestive troubles where the uric acid diathesis and inactive liver and glandular functions are a factor. It is a gastric sedative, relieving pyrosis and flatulence. Cystic catarrh and lithemia are markedly relieved by this agent.
In homeopathic practice minute doses of this drug are used symptomatically in a host of chronic conditions due to defective metabolism. It is a drug they value highly and use in high dilution. The present author pleads ignorance in the use of the dilutions, but has found small doses of the ec. tr. a most satisfactory drug, and uses it almost daily. The sectarian literature concerning this drug is well worth careful study.