Capsicum annuum, Cayenne Pepper.

Seems to suit especially persons of lax fiber, weak; diminished vital heat. A relaxed plethoric sluggish, cold remedy. Not much reactive force. Such persons are fat, indolent, opposed to physical exertion, averse to go outside of their routine, get homesick easily. General uncleanliness of body. Abstainers from accustomed alcoholics. It affects the mucous membranes, producing a sensation of constriction. Inflammation of petrous bone. Burning pains and general chilliness. Older people who have exhausted their vitality, especially by mental work, and poor living; blear-eyed appearance; who do not react. Fear of slightest draught. Marked tendency to suppuration in every inflammatory process. Prostration and feeble digestion of alcoholics. Myalgia, aching and jerking of muscles.
Mind.--Excessive peevishness. Homesickness, with sleeplessness and disposition to suicide. Wants to be let alone. Peppery disposition. Delirium tremens.
Head.--Bursting headache; worse, coughing. Hot face. Red cheeks. Face red, though cold (Asafaet).
Ears.--Burning and stinging in ears. Swelling and pain behind ears. Inflammation of mastoid. Tenderness over the petrous bone; extremely sore and tender to touch (Onosmod). Otorrhoea and mastoid disease before suppuration.
Throat.--Hot feeling in fauces. Subacute inflammation of Eustachian tube with great pain. Pain and dryness in throat extending to the ears. Sore throat of smokers and drinkers. Smarting in; constriction. Burning constriction worse between acts of deglutition. Inflamed uvula and palate; swollen and relaxed.
Mouth.--Herpes labialis (Apply one drop of the mother tincture). Stomatitis. Disagreeable smell from mouth. Fetid odor from mouth.
Stomach.--Burning in tip of tongue. Atonic dyspepsia. Much flatulence, especially in debilitated subjects. Intense craving for stimulants. Vomiting, sinking at pit of stomach. Much thirst; but drinking causes shuddering.
Stool.--Bloody mucus, with burning and tenesmus; drawing pain in back after stool. Thirsty after stool, with shivering. Bleeding piles, with soreness of anus. Stinging pain during stool.
Urine.--Strangury, frequent, almost ineffectual urging. Burning in orifice. Comes first in drops, then in spurts; neck of bladder spasmodically contracted. Ectropion of meatus.
Male.--Coldness of scrotum, with impotency, atrophied testicles, loss of sensibility in testicles, with softening and dwindling. Gonorrhoea, with chordee, excessive burning, pain in prostate.
Female.--Climacteric disturbances with burning of tip of tongue (Lathyrus). Uterine haemorrhage near the menopause, with nausea. Sticking sensation in left ovarian region.
Respiratory.--Constriction of chest; arrests breathing Hoarseness. Pain at apex of heart or in rib region, worse touch. Dry, hacking cough, expelling an offensive breath from lungs. Dyspnoea. Feels as if chest and head would fly to pieces. Explosive cough. Threatening gangrene of lung. Pain in distant parts on coughing-bladder, legs, ears, etc.
Extremities.--Pain from hips to feet. Sciatica, worse bending backward; worse, coughing. Tensive pain in the knee.
Fever.--Coldness, with ill-humor. Shivering after drinking. Chill begins in back; better, heat. Must have something hot to back. Thirst before chill.
Modalities.--Better, while eating, from heat. Worse, open air, uncovering, draughts.
Relationship.--Antidote: Cina; Calad. Compare: Pulsat; Lycop; Bell; Centaurea (surging of blood; homesickness; intermittent fever).
Dose.--Third to sixth attenuation. In delirium tremens, dram doses of tincture in milk or tincture or orange peel.

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