Acid, Tartaric.
Aconite: small doses frequently in all sympathetic fevers.
Alcohol: often useful, but effect watched carefully,—quickly discontinued if it does not relieve symptoms.
Alkalies: febrifuges, and increase urinary solids.
Ammonia: in sudden collapse.
Ammonium Acetate: very useful as diaphoretic, chiefly in milder forms.
Ammonium Carbonate: in scarlet fever and measles, and in any typhoid condition.
Ammonium Picrate: in malarial fever.
Antipyrine: to reduce temperature.
Arnica: full doses of the infusion in sthenic reaction; low doses of the tincture in asthenia.