Paullinia sorbilis
Guarana
Boericke, Pocket Manual of Homœopathic Materia Medica, 9th ed., 1927, p. 499
Contains a large percentage of Caffein, which may explain its use as a remedy for certain forms of sick headache.
Head
Intellectual excitement. Sick headache in persons who have used tea and coffee in excess. Throbbing headache after use of liquor.
Bowels.—Stools profuse, bloody, bright green; flakes intermixed; odorless. Cholera infantum.
Skin
Chloasmata on temples and arms. Urticaria. [Dulc.; Apis; Chloral.]
Sleep
Uncontrollable sleepiness and heaviness of head, with flushed face after eating.
The book’s Dose section is left out: Samepath quotes the books but gives no dosing advice.