USP Halcinonide RS
Dry portion in vacuum at 100for 3hours before using.Keep container tightly closed.Protect from light.Store in a refrigerator.
USP Haloperidol RS
Dry portion in vacuum at 60for 3hours before using.Keep container tightly closed.Protect from light.
USP Haloperidol Related Compound A RS
[4,4¢-bis[4-p-chlorophenyl)-4-hydroxypiperidino]butyrophenone] (C32H36Cl2N2O3 567.56) —Do not dry.Keep container tightly closed.Protect from light.
USP Halothane RS
Do not dry.Keep container tightly closed and protected from light. Add the following:
USP Hemoglobin RS.
USP28
USP Heparin Sodium RS
Store in a cool place and do not freeze.
USP Hetacillin RS
Do not dry before using.Keep container tightly closed.Store in a cold place.
USP Hexachlorophene RS
Dry portion at 105for 4hours before using.Keep container tightly closed.Protect from light.Store in a cool,dry place.
USP Hexacosanol RS.
Change to read:
USP2E,4E-Hexadienoic Acid Isobutylamide RS
Do not dry.Keep container tightly closed.Store in a refrigerator.Protect from light.USP28
USP Hexylene Glycol RS
Do not dry before using.Keep container tightly closed.
USP Hexylresorcinol RS
Dry over silica gel for 4hours before using.Keep container tightly closed.
USP Histamine Dihydrochloride RS
Dry portion over silica gel for 2hours before using.Keep container tightly closed.Protect from light.
USPL-Histidine RS
Do not dry before using.Keep container tightly closed.
USP Homatropine Hydrobromide RS—
Do not dry.Keep container tightly closed.Protect from light.
USP Homatropine Methylbromide RS
Dry portion at 105for 3hours before using.Keep container tightly closed.Protect from light. Add the following:
USP Homopolymer Polypropylene RS—
Exercise care in handling and storage to avoid scratching surface of strips.Prepare samples as directed in the respective USP General Test Chapter.USP28
USP Homosalate RS.

USP Hyaluronidase RS
This is a mixture of hyaluronidase and lactose.Do not dry before using.Keep container tightly closed,and store in a cool,dry place,preferably under refrigeration in a desiccator.
USP Hydralazine Hydrochloride RS
Dry it at 110for 15hours before using.Keep container tightly closed.Store in a dry place.
USP Hydrochlorothiazide RS
Dry portion at 105for 1hour before using.Keep container tightly closed.
USP Hydrocodone Bitartrate RS
Dry portion in vacuum at 105for 2hours before using.[NOTE—Hydrocodone Bitartrate,after drying,is extremely hygroscopic.After drying,immediately transfer the material to a desiccator containing phosphorus pentoxide.]Protect from light.
USP Hydrocodone Bitartrate Related Compound A RS—
Do not dry.Keep container tightly closed.
USP Hydrocortisone RS
Dry portion at 105for 3hours before using.Keep container tightly closed.
USP Hydrocortisone Acetate RS
Dry portion in vacuum at 60for 3hours before using.Keep container tightly closed.
USP Hydrocortisone Butyrate RS
Dry portion in vacuum at 78for 3hours before using.Keep container tightly closed.
USP Hydrocortisone Hemisuccinate RS
Dry portion at 105for 3hours before using.Keep container tightly closed.
USP Hydrocortisone Phosphate Triethylamine RS
(C21H31O8P·C6H15N 543.64) —Dry portion in vacuum at 60for 3hours before using.Keep container tightly closed.
USP Hydrocortisone Valerate RS
Dry portion at 105for 3hours before using.Keep container tightly closed.
USP Hydroflumethiazide RS
Dry portion over silica gel for 4hours before using.Keep container tightly closed.
USP Hydromorphone Hydrochloride RS
Dry portion at 105for 2hours before using.Keep container tightly closed.Protect from light.
USP Hydroquinone RS
Do not dry;determine the water content by the titrimetric method before using for quantitative analyses.Keep container tightly closed.Protect from light.
USP Hydroxyamphetamine Hydrobromide RS
Dry portion at 105for 2hours before using.Keep container tightly closed.Protect from light.
USP Hydroxychloroquine Sulfate RS
Dry portion at 105for 2hours before using.Keep container tightly closed.Protect from light.
USP Hydroxyprogesterone Caproate RS
Dry portion in vacuum over silica gel for 4hours before using.Keep container tightly closed.Protect from light.
USP Hydroxypropyl Cellulose RS
Dry portion at 105for 3hours before using.Keep container tightly closed.
USP Hydroxypropyl Methylcellulose RS—
(NAME CHANGE)See USP Hypromellose RS.
USP Hydroxyurea RS
[Caution—Hygroscopic;decomposes in the presence of moisture. ]Dry portion in vacuum at 60for 3hours before using.Keep container tightly closed.Store in a desiccator at 0or less. Change to read:
USP Hydroxyzine Hydrochloride RS
[Caution—The dried material is hygroscopic. ]Dry portion in vacuum at 75for 3hours before using.Keep container tightly closed.Store in a refrigerator.USP28
USP Hydroxyzine Related Compound A RS[p-chlorobenzhydrylpiperazine]—
Do not dry;use as is.Keep container tightly closed.
USP Hydroxyzine Pamoate RS
Do not dry before using.For quantitative applications,determine the water content titrimetrically at the time of use.Keep container tightly closed.
USP Hyoscyamine Sulfate RS
Dry portion in vacuum at 105for 16hours before using.Keep container tightly closed.Protect from light.
USP Hypericin RS.

USP Hyperoside RS.

USP Hypromellose RS—
Dry portion at 105for 2hours before using.Keep container tightly closed.This material is hygroscopic.
USP Hypromellose Phthalate RS
Do not dry before using.Keep container tightly closed.