Ala-Scalp Lotion

Generic name:hydrocortisone
Dosage form: lotion
Drug class:Topical steroids

Medically reviewed by Drugs.com. Last updated on Feb 1, 2021.

Rx Only

For external use only

Not for opthalmic use

Ala-Scalp Lotion Description

Topical corticosteroids constitute a class of primarily synthetic steroids used a anti-inflammatory and antipruritic agents. Hydrocortisone is a member of this class. Chemically hydrocortisone is pregn-4-ene-3, 20-dione, 11, 17, 21-trihydroxy, (11Β)-. Its structural formula is:

Each mL of ALA-SCALP (Hydrocortisone Lotion USP), 2% contains 20 mg of hydrocortisone USP in a vehicle of isopropyl alcohol, polysorbate 20, purified water, propylene glycol, and benzalkonium chloride.

Ala-Scalp Lotion - Clinical Pharmacology

Topical corticosteroids share anti-inflammatory, antipruritic and vasoconstrictive actions. The mechanism of anti-inflammatory activity of the topical corticosteroids is unclear. Various laboratory methods, including vasoconstrictor assays, are used to compare and predict potencies and/or clinical efficacies of the topical corticosteroids. There is some evidence to suggest that a recognizable correlation exists between vasoconstrictor potency and therapeutic efficacy in man.

Pharmacokinetics

The extent of percutaneous absorption of topical corticosteroids is determined by many factors including the vehicle, the integrity of the epidermal barrier, and the use of occlusive dressings. Topical corticosteroids can be absorbed from normal intact skin. Inflammation and/or other disease processes in the skin increase percutaneous absorption. Occlusive dressings may be a valuable therapeutic adjunct for treatment of resistant dermatoses. (See DOSAGE AND ADMINISTRATION).

Once absorbed through the skin, topical corticosteroids are handled through pharmacokinetic pathways similar to systemically administered corticosteroids. Corticosteroids are bound to plasma proteins in varying degrees. Cort...