Gaultheria procumbens, Wintergreen.

Inflammatory rheumatism, pleurodynia, sciatica, and other neuralgias, come within, the sphere of this remedy. Cystic and prostatic irritation, undue sexual excitement, and renal inflammation.
Head.--Neuralgia of head and face.
Stomach.--Acute gastritis, severe pain in epigastrium; prolonged vomiting. Uncontrollable appetite, notwithstanding irritable stomach. Gastralgia from nervous depression (Give five drops of 1x of Oil).
Skin.--Smarting and burning. Intense erythema, worse, cold bathing; better, olive oil and cool air blowing on part.
Relationship.--Compare: Spiraeea. Gaultheria contains Arbutin. Salycyl acid. Methylium salicylicum (an artificial Gaultheria oil for rheumatism, especially when the salicylates cannot be used. Pruritus and epididymitis, locally). After Cantharis in burns.
Dose.--Tincture and lower potencies.

Boericke's Materia Medica, 1901, was written by William Boericke. Excerpt: The Tinctures.