=Ammonii Valeras (Ammon. Valer.), Ammonium Valerate, U.S.P.= (Ammonium Valerianate).--Of variable composition. White plates, with a valerian odor and a sharp, sweetish taste. Very soluble in water (1:0.3) and in alcohol (1:0.6). ACTION AND USES: Sedative in hysteria, depending on the valeric odor. Not very effective. DOSAGE: 0.5 Gm. or 8 grains (U.S.P.). _Elixir Ammonii Valeratis (Elix. Ammon. Valer.), Elixir of Ammonium Valerate, N.F._ (Elixir Ammonii Valerianatis, N.F. III).--Ammonium valerate (3.5%) in red elixir. Absolute alcohol content about 20 per cent. DOSAGE: 4 Cc. or 1 fluidrachm. The alcohol content should be borne in mind. =Amygdala Dulcis (Amygd. Dulc.), Sweet Almond, U.S.P.= ACTION AND USES: Demulcent, especially as cosmetic. _Emulsum Amygdalae (Emuls. Amygd.), Emulsion of Almond, U.S.P._ (Milk of Almond).--Sweet almond, acacia, sugar and water. =*Amylis Nitris (Amyl. Nitris), Amyl Nitrite, U.S.P.=--Not less than 80 per cent. C{5}H{11}NO{2} (chiefly iso-amyl nitrite). A yellowish liquid, with a fruity odor and a pungent, aromatic taste. Very volatile; almost insoluble in water, but miscible with alcohol or ether. ACTION AND USES: Prompt vasodilator, used especially in spasms of angina pectoris, asthma and general convulsions. DOSAGE: 0.2 Cc. or 3 minims (U.S.P.), by inhalation. =*Amylum (Amyl.), Starch, U.S.P.= (Corn Starch). ACTION AND USES: Dusting powder and diluent. _Glyceritum Amyli (Glycer. Amyl.), Glycerite of Starch, U.S.P._--Starch (10%) and water (10%) in glycerin. USES: Emollient and excipient. =Anethol (Anethol), Anethol, N.F.=--The chief constituent of oil of anise and oil of fennel. A colorless or yellowish liquid, with a sweet taste and an odor of anise; solid below 20 C. Almost insoluble in water, but freely soluble in alcohol or ether. ACTION AND USES: Carminative, etc. Similar to but without advantage over oil of anise. DOSAGE: 0.2 Cc. or 3 minims (N.F.). _Elixir Anisi (Elix. Anis.), Elixir of Anise, N.F._--Anethol, oil of fennel, spirit of bitter almond, alcohol, syrup and water. Absolute alcohol content about 23 per cent. USES: Carminative and flavor. DOSAGE: For infants, 1 Cc. or 15 minims (N.F.). =Angelicae Fructus (Angel. Fruct.), Angelica Fruit, N.F.= (Angelica Seed). ACTION AND USES: Aromatic stomachic and carminative; without advantage over gentian. DOSAGE: 1 Gm. or 15 grains (N.F.). =Angelicae Radix (Angel. Rad.), Angelica Root, N.F.= ACTION AND USES: Stimulating expectorant; without advantage over tolu. DOSAGE: 2 Gm. or 30 grains (N.F.). _Fluidextractum Angelicae Radicis (Fldext. Angel. Rad.), Fluidextract of Angelica Root, N.F._--Angelica root (100%). Absolute alcohol content about 85 per cent. DOSAGE: 2 Cc. or 30 minims (N.F.). =Anisum (Anis.), Anise, U.S.P.= (Aniseed). ACTION AND USES: Carminative. (See =Oleum Anisi=).