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.
Apiol, in doses of 15 to 30 I, is an antiperiodic employed in malaria. In doses of 5 to 10 I it is emmena-gogue and is employed in dysmenorrhea. It is administered in capsules. It is a definite stearoptine of considerable value, whereas the so-called "liquid apiol" is an alcoholic extract of the parsley fruit.