Part 10

_Fluidextractum Heloniatis (Fldext. Helon.), Fluidextract of Helonias, N.F._--Helonias (100%). Absolute alcohol content about 40 per cent.

DOSAGE: 2 Cc. or 30 minims (N.F.)

=*Hexamethylenamina (Hexam.), Hexamethylenamine, U.S.P.= (Hexamethylene-tetramine; also sold as urotropine, aminoform, formamin, formin, cystamin, cystogen, urisol and uritone).--(CH{2}){6}N{4}, a condensation product of ammonia and formaldehyde.

Colorless crystals or white powder, odorless and with a sweetish taste. Freely soluble in water (1:1.5) and in alcohol (1:12.5). Incompatible with acids, with ammonium salts, with tannin and with mercuric chloride.

ACTION AND USES: Useful urinary antiseptic, liberating formaldehyde in the presence of acids (not otherwise). Also used as prophylactic against infection in bile and in other body fluids, but inefficient since these fluids are not acid.

DOSAGE: 0.25 Gm. or 4 grains (U.S.P.), in solution. When sodium acid phosphate is given to render the urine acid, hexamethylenamine should not be taken until the phosphate has left the stomach

=*Homatropinae Hydrobromidum (Homatrop. Hydrobr.), Homatropine Hydrobromide, U.S.P.= (Homatropine Bromide).

White, odorless powder. Freely soluble in water (1:6) and soluble in alcohol (1:40).

ACTION AND USES: Used as mydriatic and cycloplegic. Its effects resemble those of atropine but occur more promptly and disappear in shorter time.

DOSAGE: 0.5 mg. or 1/120 grain (U.S.P.). May be used in aqueous solution of 2 per cent. strength, or a drop of a 1:500 solution may be introduced into the conjunctival sac every five minutes for five times to produce a maximum dilatation in three quarters of an hour

=Humulus (Humul.), Hops, U.S.P.=

ACTION AND USES: Formerly used as aromatic bitter stomachic.

DOSAGE: 2 Gm. or 30 grains (U.S.P.).

_Elixir Humuli (Elix. Humul.), Elixir of Hops, N.F._--Fluidextract of hops (12.5%), compound elixir of taraxacum, tincture of vanilla and aromatic elixir. Absolute alcohol content about 25 per cent.

DOSAGE: 8 Cc. or 2 fluidrachms (N.F.).

_Fluidextractum Humuli (Fldext. Humul.), Fluidextract of Hops, N.F._--Hops (100%). Absolute alcohol content about 50 per cent.

DOSAGE: 2 Cc. or 30 minims (N.F.).

_Tinctura Humuli (Tr. Humul.), Tincture of Hops, N.F._--Hops (20%) in diluted alcohol. Absolute alcohol content about 45 per cent.

USES: Bitter stomachic.

DOSAGE: 4 Cc. or 1 fluidrachm (N.F.)

=Hydrangea (Hydrang.), Hydrangea, N.F.= (Seven-Barks).--Rhizome and roots.

ACTION AND USES: Obsolete cathartic, diuretic and diaphoretic; without established value.

DOSAGE: 2 Gm. or 30 grains (N.F.).

_Fluidextractum Hydrangeae (Fldext. Hydrang.), Fluidextract of Hydrangea, N.F._--Hydrangea (100%). Absolute alcohol content about 50 per cent.

DOSAGE: 2 Cc. or 30 minims (N.F.)

=*Hydrargyri Chloridum Corrosivum (Hydrarg. Chlor. Corr.), Corrosive Mercuric Chloride, U.S.P.= (Bichloride of Mercury, Corrosive Sublimate, Mercuric Chloride, Perchloride of Mercury).--HgCl{2}.

Heavy, colorless crystals, crystalline masses or white powder, odorless and with a characteristic metallic taste. Slowly soluble in water (1:13.5) and freely soluble in alcohol (1:3.8). Its solubility in water is increased by the addition of sodium or ammonium chloride. Incompatible with soluble carbonates and hydroxides, with iodides and with alkaloids and other organic compounds. Reduced to calomel or metallic mercury by iron, zinc and other reducing agents.

ACTION AND USES: Chiefly as a germicide and antiseptic; also as a specific antisyphilitic agent. Acute mercuric chloride poisoning is treated by raw eggs and lavage.

DOSAGE: 0.003 Gm. or 1/20 grain (U.S.P.) in solution or pills. For hypodermic use in syphilis 0.01 Gm. or 1/6 grain daily (produces marked pain and irritation). As antiseptic externally in solution from 1:20,000 to 1:2,000. As disinfectant of clothing, in 1:1,000 solution.

_Mulla Hydrargyri Chloridi Corrosivi (Mull. Hydrarg. Chlor. Corros.), Corrosive Mercuric Chloride Mull, N.F._ (Unguentum Hydrargyri Chloridi Corrosivi Extensum, N.F. III).--Corrosive mercuric chloride (0.2%), alcohol, benzoinated suet and benzoinated lard.

_Toxitabellae Hydrargyri Chloridi Corrosivi (Toxitabel. Hydrarg. Chlor. Corr.), Poison Tablets of Corrosive Mercuric Chloride, U.S.P._ (Corrosive Sublimate Tablets, Bichloride Tablets).--Tablets of an angular shape colored blue, each having the word "Poison" and the skull and cross bones design distinctly stamped on it. Each 1 Gm. tablet contains about 0.5 Gm. or 8 grains corrosive mercuric chloride and 0.5 Gm. or 8 grains sodium chloride.

=*Hydrargyri Chloridum Mite (Hydrarg. Chlor. Mit.), Mild Mercurous Chloride, U.S.P.= (Mercurous Chloride, Calomel, Protochloride of Mercury, Subchloride of Mercury).--HgCl.

White or nearly white, odorless, tasteless powder. Insoluble in water, alcohol or ether. Incompatible with alkalies, with oxidizing acids like nitric acid, and with soluble bromides and iodides.

ACTION AND USES: A slow cathartic, fairly powerful and relatively non-irritant. Should usually be followed by a saline laxative. Should not be taken continuously as it may salivate. Also employed as a diuretic in cardiac dropsies. Intramuscular injections are very efficiently antisyphilitic, but painful.

DOSAGE: Laxative, 0.15 Gm. or 2-1/2 grains (U.S.P.); alterative, 0.015 Gm. or 1/4 grain (U.S.P.). From 0.005 to 0.02 Gm., or from 1/12 to 1/3 grain, may be given every half hour or hour until from 0.1 to 0.2 Gm., or from 1-1/2 to 3 grains have been given. In the treatment of syphilis 0.1 Gm. or 1-1/2 grain in oily suspension is injected about once a week.

_Lotio Nigra (Lot. Nigr.), Black Lotion, N.F._ (Black Wash, Aqua Phagedaenica Nigra).--A suspension of mercurous oxide, Hg{2}O, produced by the action of lime water on mild mercurous chloride.

USES: Mercurial antiseptic.

_Pulvis Hydrargyri Chloridi Mitis et Jalapae (Pulv. Hydrarg. Chlor. Mit. et Jalap.), Powder of Mild Mercurous Chloride and Jalap, N.F._ (Calomel and Jalap).--Mild mercurous chloride (34%) and jalap (66%).

USES: Drastic purgative.

DOSAGE: 0.65 Gm. or 10 grains (N.F.)

=*Hydrargyri Iodidum Flavum (Hydrarg. Iod. Flav.), Yellow Mercurous Iodide, U.S.P.= (Mercurous Iodide, Protoiodide of Mercury, Yellow Iodide of Mercury).--HgI.

Bright yellow, odorless, tasteless powder. Almost insoluble in water and wholly insoluble in alcohol or ether. Decomposed by oxidizing agents, alkalies and the haloid salts of the alkali metals (chlorides, bromides or iodides).

ACTION AND USES: Used principally as an antisyphilitic; generally given in the form of pills. Like all ingestion methods of treating syphilis, much less reliable than the intramuscular administration of mercurials and is falling into disuse on account of relative inefficiency. Has proved of value in lichen ruber planus.

DOSAGE: 0.01 Gm. or 1/6 grain (U.S.P.)

=*Hydrargyri Iodidum Rubrum (Hydrarg. Iod. Rub.), Red Mercuric Iodide, U.S.P.= (Biniodide of Mercury, Mercuric Iodide, Red Iodide of Mercury).--HgI{2}.

Scarlet-red, odorless, nearly tasteless powder. Nearly insoluble in water and slightly soluble in alcohol (1:115); soluble in solutions of soluble iodides, sodium thiosulphate and hot solutions of alkali chlorides.

ACTION AND USES: Mercuric Iodide, dissolved with potassium or sodium iodide, is used as an antiseptic, germicide and antisyphilitic. It is practically as effective as mercuric chloride and less irritant or corrosive.

DOSAGE: 0.003 Gm. or 1/20 grain (U.S.P.).

_Liquor Hydrargyri et Potassii Iodidi (Liq. Hydrarg. et Pot. Iod.), Solution of Mercury and Potassium Iodide, N.F._ (Solution of Potassium Iodohydrargyrate, Channing's Solution).--Red mercuric iodide (1%), potassium iodide (0.8%), and water.

DOSAGE: 0.2 Cc. or 3 minims (N.F.)

=Hydrargyri Nitras, Mercuric Nitrate.=--Hg(NO{3}){2}.

_Liquor Hydrargyri Nitratis (Liq. Hydrarg. Nit.), Solution of Mercuric Nitrate, N.F._--Hg(NO{3}){2} (60%).

USES: Caustic.

_Unguentum Hydrargyri Nitratis (Ung. Hydrarg. Nit.), Ointment of Mercuric Nitrate, U.S.P._ (Citrine Ointment).--Mercuric nitrate (equivalent to mercury 7%) in lard.

=*Hydrargyri Oxidum Flavum (Hydrarg. Oxid. Flav.), Yellow Mercuric Oxide, U.S.P.=--HgO.

Light orange-yellow, heavy, odorless powder, with a somewhat metallic taste. Almost insoluble in water, insoluble in alcohol, readily dissolved by dilute hydrochloric acid and nitric acid.

ACTION AND USES: The ointment is used, especially on the eye, as an antiseptic and stimulant; also to some extent in impetiginous affections.

DOSAGE: For the eye, 2 per cent.; for the skin, from 5 to 10 per cent.

_Lotio Flava (Lot. Flav.), Yellow Lotion, N.F._ (Yellow Wash, Aqua Phagedaenica Flava).--A suspension of mercuric oxide produced by the action of lime water on mercuric chloride.

USES: Mercurial antiseptic.

_*Unguentum Hydrargyri Oxidi Flavi (Ung. Hydrarg. Oxid. Flav.), Ointment of Yellow Mercuric Oxide, U.S.P._--Yellow mercuric oxide (10%) in water, hydrous wool fat and petrolatum.

=Hydrargyri Oxidum Rubrum (Hydrarg. Oxid. Rub.), Red Mercuric Oxide, U.S.P.= (Red Precipitate).--HgO.

Heavy, orange-red scales or powder, odorless and with a somewhat metallic taste. Almost insoluble in water; insoluble in alcohol, readily dissolved by nitric acid.

ACTION AND USES: Occasionally used externally in the form of an ointment and as a parasiticide. Without advantage over yellow oxide.

_Unguentum Hydrargyri Oxidi Rubri (Ung. Hydrarg. Oxid. Rub.), Ointment of Red Mercuric Oxide, N.F._--Red mercuric oxide (10%) in water, hydrous wool fat and petrolatum.

=*Hydrargyri Salicylas (Hydrarg. Salicyl.), Mercuric Salicylate, U.S.P.= (Mercuric Subsalicylate).--Contains Hg (about 57%).

White or nearly white, odorless, tasteless powder. Nearly insoluble in water or alcohol. Dissolved by solutions of the fixed alkalies or their carbonates.

ACTION AND USES: Used as antisyphilitic especially by intramuscular injection of oily suspensions; also as local antiseptic.

DOSAGE: 0.004 Gm. or 1/15 grain (U.S.P.). By intramuscular injection, 0.6 Cc. or 10 minims of a 10 per cent. suspension in liquid petrolatum once in four days

=*Hydrargyrum (Hydrarg.), Mercury, U.S.P.= (Quicksilver).--Hg.

Shining, silver-white, odorless, tasteless metal, liquid at ordinary temperatures. Insoluble in the ordinary solvents.

ACTION AND USES: Its preparations are used to secure the systemic effects of mercury and locally against parasites.

_*Hydrargyrum cum Creta (Hydrarg. cum Cret.), Mercury with Chalk, U.S.P._ (Gray Powder).--Mercury (38%), with prepared chalk (57%), honey and water.

Light gray, odorless, rather damp powder, with a slightly sweet taste.

ACTION AND USES: A mild cathartic acting like calomel. Also used in the treatment of infantile and hereditary syphilis and of syphilis in aged patients.

DOSAGE: 0.25 Gm. or 4 grains (U.S.P.), as powder.

_*Massa Hydrargyri (Mass. Hydrarg.), Mass of Mercury, U.S.P._ (Blue Mass, Blue Pill).--Hg (about 33%) in pill mass.

USES: Mainly as cathartic.

DOSAGE: 0.25 Gm. or 4 grains (U.S.P.).

_Oleatum Hydrargyri (Oleat. Hydrarg.), Oleate of Mercury, U.S.P._--A mixture of mercury oleate and oleic acid equivalent to 25 per cent. of HgO.

USES: Alterative, antisyphilitic; rarely used.

_Petroxolinum Hydrargyri (Petrox. Hydrarg.), Mercury Petroxolin, N.F._ (Mercury Petrox).--Mercury (30%) in hydrous wool fat, oleic acid and solid petroxolin.

_*Unguentum Hydrargyri (Ung. Hydrarg.), Mercurial Ointment, U.S.P._--Metallic mercury (about 50%) and oleate of mercury (2%) with prepared suet and benzoinated lard.

USES: Especially to secure the systemic effects of mercury by inunction.

_*Unguentum Hydrargyri Dilutum (Ung. Hydrarg. Dil.), Diluted Mercurial Ointment, U.S.P._ (Blue Ointment, Hydrargyri Unguentum P.I.).--Mercurial ointment (60%) equivalent to about 30 per cent. of metallic mercury, with petrolatum.

USES: Especially in pediculosis.

=*Hydrargyrum Ammoniatum (Hydrarg. Ammon.), Ammoniated Mercury, U.S.P.= (White Precipitate).--Mercurammonium chloride, HgNH{2}Cl, corresponding to about 79 per cent. of Hg.

White, odorless lumps or powder, with an earthy, afterward styptic and metallic taste. Insoluble in water or alcohol.

ACTION AND USES: The ointment is extensively used as a cutaneous antiseptic especially for impetigo contagiosa and other pustular dermatoses and ringworm of the scalp. Also used for removing scales of psoriasis. It may cause salivation.

DOSAGE: From 2 to 10 per cent. ointment.

_*Unguentum Hydrargyri Ammoniati (Ung. Hydrarg. Ammon.), Ointment of Ammoniated Mercury, U.S.P._ (White Precipitate Ointment).--Ammoniated mercury (10%) in white petrolatum and hydrous wool fat.

=Hydrastina (Hydrastina), Hydrastine, U.S.P.=--An alkaloid obtained from hydrastis or prepared synthetically.

White crystals or powder. Almost insoluble in water, soluble in alcohol (1:170).

ACTION AND USES: Used in the treatment of urethral and vesical catarrh and as a systemic hemostatic, especially in excessive menstruation. Its efficiency and the mechanism of its action are doubtful.

DOSAGE: 0.01 Gm. or 1/6 grain (U.S.P.).

=Hydrastinae Hydrochloridum (Hydrastin. Hydrochl.), Hydrastine Hydrochloride, U.S.P.= (Hydrastine Chloride).

White, odorless, bitter powder. Very soluble in water and in alcohol.

ACTION AND USES: Those of hydrastine.

DOSAGE: 0.01 Gm. or 1/6 grain (U.S.P.).

_Liquor Hydrastinae Compositus (Liq. Hydrastin. Co.), Compound Solution of Hydrastine, N.F._ (Colorless Hydrastine Solution).--Hydrastine hydrochloride (0.3%), aluminum chloride, calcium chloride, and magnesium chloride (each 0.3%), potassium chloride (0.1%) in glycerin and water.

USES: Complex and irrational astringent.

DOSAGE: 4 Cc. or 1 fluidrachm (N.F.).

=Hydrastininae Hydrochloridum (Hydrastinin. Hydrochl.), Hydrastinine Hydrochloride, U.S.P.= (Hydrastinine Chloride).--The hydrochloride of hydrastinine, an alkaloid obtained synthetically from hydrastine.

Yellowish, odorless crystals or powder. Soluble in chloroform (1:195); very soluble in water and alcohol.

ACTION AND USES: Hydrastinine resembles hydrastine in its action but is said to be less depressing. Hydrastinine has a pronounced pressor effect on peripheral vessels, causing a rise of blood pressure.

DOSAGE: 0.03 Gm. or 1/2 grain (U.S.P.)

=*Hydrastis (Hydrastis), Hydrastis, U.S.P.= (Golden Seal).--Rhizome and roots, yielding not less than 2.5 per cent. of ether-soluble alkaloids, chiefly hydrastin.

ACTION AND USES: Hydrastis is an unpleasant bitter; it possesses no advantages over other simple bitters (gentian). It has been asserted to have a special influence on mucous membranes favoring their nutrition and return to a normal condition. There is little or no experimental evidence to bear out the claim for any special action.

DOSAGE: 2 Gm. or 30 grains (U.S.P.).

_Extractum Hydrastis (Ext. Hydrast.), Extract of Hydrastis, U.S.P._ (Extract of Golden Seal, Powdered Extract of Hydrastis).--One Gm. extract represents about 4 Gm. hydrastis. Yields about 10 per cent. of alkaloids.

DOSAGE: 0.5 Gm. or 8 grains (U.S.P.).

_*Fluidextractum Hydrastis (Fldext. Hydrast.), Fluidextract of Hydrastis, U.S.P._--Hydrastis (100%), yielding about 2 per cent. of alkaloids. Absolute alcohol content about 55 per cent.

DOSAGE: 2 Cc. or 30 minims (U.S.P.).

_Glyceritum Hydrastis (Glycer. Hydrast.), Glycerite of Hydrastis, U.S.P._ (Glycerite of Golden Seal).--Hydrastis (100%) yielding not less than 1.245 per cent. of alkaloids.

DOSAGE: 2 Cc. or 30 minims (U.S.P.).

_Tinctura Hydrastis (Tr. Hydrast.), Tincture of Hydrastis, U.S.P._ (Tincture of Golden Seal).--Hydrastis (20%), yielding about 0.4 per cent. of hydrastin; in alcohol and water. Absolute alcohol content about 60 per cent.

DOSAGE: 4 Cc. or 1 fluidrachm (U.S.P.)

=*Hydrogenii Dioxidum, Hydrogen Dioxide= (Hydrogen Peroxide).--H{2}O{2}.

_*Liquor Hydrogenii Dioxidi (Liq. Hydrog. Diox.), Solution of Hydrogen Dioxide, U.S.P._ (Aqua Hydrogenii Dioxidii, U.S.P. VIII, Solution of Hydrogen Peroxide).--H{2}O{2} (not less than 3%).

ACTION AND USES: Nontoxic and fairly efficient local antiseptic and detergent, useful mainly for the destruction of pus. Used on suppurating wounds and as a mouthwash and gargle; also as a bleaching agent. Should not be injected into a wound unless free drainage is present.

DOSAGE: 4 Cc. or 1 fluidrachm (U.S.P.). For external application should be diluted about 1:4.

=Hyoscyaminae Hydrobromidum (Hyoscyamin. Hydrobr.), Hyoscyamine Hydrobromide, U.S.P.= (Hyoscyamine Bromide).--Obtained from hyoscyamus and other plants of the nightshade family.

White, odorless crystals. Freely soluble in alcohol (1:2.5) and in chloroform (1:1.7); very soluble in water.

ACTION AND USES: Similar to those of atropine; is usually more sedative to the brain, but at times produces acute delirium. The drug is very uncertain.

DOSAGE: 0.3 mg. or 1/200 grain (U.S.P.).

=*Hyoscyamus (Hyosc.), Hyoscyamus, U.S.P.= (Henbane, Hyoscyami Folium, P.I.).--Leaves and tops, yielding not less than 0.065 per cent. of alkaloids.

ACTION AND USES: Similar to those of belladonna.

DOSAGE: 0.25 Gm. or 4 grains (U.S.P.).

_Extractum Hyoscyami (Ext. Hyosc.), Extract of Hyoscyamus, U.S.P._--One Gm. extract represents about 4 Gm. hyoscyamus. Yields about 0.25 per cent. of alkaloids.

DOSAGE: 0.06 Gm. or 1 grain (U.S.P.).

_Fluidextractum Hyoscyami (Fldext. Hyosc.), Fluidextract of Hyoscyamus, U.S.P._ (Fluidextract of Henbane).--Hyoscyamus (100%) yielding about 0.065 per cent. of alkaloids, chiefly hyoscyamine. Absolute alcohol content about 60 per cent.

DOSAGE: 0.2 Cc. or 3 minims (U.S.P.).

_Oleum Hyoscyami Compositum (Ol. Hyosc. Co.), Compound Oil of Hyoscyamus, N.F._ (Balsamum Tranquillans).--Infused oil of hyoscyamus (hyoscyamus 10%) flavored with oils of lavender, peppermint, rosemary and thyme.

_*Tinctura Hyoscyami (Tr. Hyosc.), Tincture of Hyoscyamus, U.S.P._ (Tincture of Henbane, Hyoscyami Tinctura, P.I.).--Hyoscyamus (10%), yielding about 0.0065 per cent. of hyoscyamus alkaloids; in diluted alcohol. Absolute alcohol content about 47 per cent.

DOSAGE: 2 Cc. or 30 minims (U.S.P.).

=*Hypophysis Sicca (Hypophysis Sic.), Desiccated Hypophysis, U.S.P.= (Desiccated Pituitary Body).--The posterior lobe obtained from the pituitary body of cattle.

A yellowish or grayish powder with a characteristic odor. Partially soluble in water.

ACTION AND USES: Solutions are used, hypodermically, to strengthen uterine contractions in prolonged labor. They also stimulate peristalsis and have been used with some success after abdominal operations and as a vasomotor stimulant. Oral administration is ineffective.

DOSAGE: 0.03 Gm. or 1/2 grain (U.S.P.).

_*Liquor Hypophysis (Liq. Hypophysis), Solution of Hypophysis, U.S.P._ (Solution of the Pituitary Body).--Contains the water-soluble principles from the fresh posterior lobe of the pituitary body of cattle. Assayed by testing against a standard solution of beta-iminazolyl-ethylamine hydrochloride by the method of the U.S. Hygienic Laboratory.

DOSAGE: 1 Cc. or 15 minims (U.S.P.).

=Ignatia (Ignat.), Ignatia, N.F.= (Saint Ignatius Bean, Ignatia Amara).--Seeds of _Strychnos ignatii_.

ACTION AND USES: Constituents and actions similar to those of nux vomica, over which ignatia has no advantage, being less reliable.

DOSAGE: 0.06 Gm. or 1 grain (N.F.).

_Extractum Ignatiae (Ext. Ignat.), Extract of Ignatia, N.F._ (Powdered Extract of Ignatia).--A hydroalcoholic extract, yielding about 6 per cent. of alkaloids.

DOSAGE: 0.03 Gm. or 1/2 grain (N.F.).

_Tinctura Ignatiae (Tr. Ignat.), Tincture of Ignatia, N.F._--Ignatia (10%), yielding about 0.2 per cent. of ignatia alkaloids; in alcohol and water. Absolute alcohol content about 85 per cent.

DOSAGE: 0.6 Cc. or 10 minims (N.F.).

=INFUSA, INFUSIONS.=--Aqueous preparations made by pouring hot or cold water over a vegetable drug, allowing the mixture to stand for a definite period and then straining. For the official infusions, see under the names of the respective drugs.

=Inula (Inula), Inula, N.F.= (Elecampane).--Rhizome and roots.

ACTION AND USES: At one time used in bronchitis. No scientific indications for its use.

DOSAGE: 2 Gm. or 30 grains (N.F.).

=INUNCTA, INUNCTIONS.=--Semisolid ointment-like preparations used for external application. For the various inunctions see under the names of the principal ingredients.

=*Iodoformum (Iodof.), Iodoform, U.S.P.=--Triiodomethane, CHI{3}.

Lemon-yellow powder or lustrous crystals, with a peculiar, penetrating odor and an unpleasant, slightly sweetish taste suggestive of iodine. Nearly insoluble in water, to which, however, it imparts its odor and taste; soluble in alcohol (1:60) and in glycerin (1:80).

ACTION AND USES: Used as dusting powder, promoting healing by granulation. Oily suspensions are also used in treatment of tuberculous fistulas.

_Collodium Iodoformi (Collod. Iodof.), Iodoform Collodion, N.F._--Iodoform (5%) in flexible collodion.

USES: There appears to be no advantage in applying iodoform in collodion.

_Glycerogelatinum Iodoformi (Glycerogel. Iodof.), Iodoform Glycerogelatin, N.F._--Iodoform (10%), water, glycerin and glycerinated gelatin.

_Iodoformum Aromatisatum (Iodof. Arom.), Aromatized Iodoform, N.F._--Coumarin (4%) and iodoform.

_Petroxolinum Iodoformi (Petrox. Iodof.), Iodoform Petroxolin, N.F._ (Iodoform Petrox.).--An unstable preparation made from iodoform (3%), acetone, oleic acid, eucalyptol and liquid petroxolin.

_Unguentum Iodoformi (Ung. Iodof.), Iodoform Ointment, U.S.P._--Iodoform (10%) in benzoinated lard.

=*Iodum (Iodum), Iodine, U.S.P.=--I.

Heavy, bluish-black, brittle plates, with a metallic luster, a distinctive odor and a sharp, acrid taste. Very slightly soluble in water (1:2950) and soluble in alcohol (1:12.5). Freely soluble in solutions of alkali iodides.

ACTION AND USES: The tincture and compound solution are used externally as local irritant and antiseptic. The irritant action can be easily graduated by successive application. It is rarely used internally for the systemic effects of iodides.

DOSAGE: 0.005 Gm. or 1/12 grain (U.S.P.), largely diluted.

_Collodium Iodi (Collod. Iodi), Iodine Collodion, N.F._--Iodine (5%) in flexible collodion.

USES: There appears little advantage in applying iodine in collodion.

_Liquor Iodi Compositus (Liq. Iodi Co.), Compound Solution of Iodine, U.S.P._ (Lugol's Solution).--Iodine (5%) and potassium iodide (10%) in water.

DOSAGE: 0.2 Cc. or 3 minims (U.S.P.).

_Liquor Iodi Phenolatus (Liq. Iod. Phenol.), Phenolated Solution of Iodine, N.F._ (Liquor Iodi Carbolatus, N.F. III, Carbolized Solution of Iodine, Boulton's Solution, French Mixture).--Compound solution of iodine (1.5%), liquefied phenol (0.6%), glycerin and water. The iodine combines with the phenol.

USES: Antiseptic.

_Petroxolinum Iodi (Petrox. Iod.), Iodine Petroxolin, N.F._ (Iodine Petrox 10%).--An unstable preparation, containing iodine, ammonium iodide and other iodine compounds in variable proportions, with a mixture of liquid petrolatum, alcohol, ammonium soap and oil of lavender; prepared from iodine (10%) and liquid petroxolin.

_Petroxolinum Iodi Dilutum (Petrox. Iod. Dil.), Diluted Iodine Petroxolin, N.F._ (Iodine Petrox 5%).--An unstable preparation containing iodine, ammonium iodide and other iodine compounds in variable proportions with a mixture of liquid petrolatum, alcohol, ammonium soap and oil of lavender; made from iodine (5%) and liquid petroxolin. Absolute alcohol content about 19 per cent.