Betamethasone Sodium Phosphate Tablets
Betamethasone Sodium Phosphate and Betamethasone Acetate Injectable Suspension, USP is a sterile aqueous suspension containing betamethasone 3 mg per milliliter as betamethasone sodium phosphate, and betamethasone acetate 3 mg per milliliter. Inactive ingredients per mL: dibasic sodium phosphate 7.1 mg; monobasic sodium phosphate 3.4 mg; edetate disodium 0.1 mg; and benzalkonium chloride 0.2 mg as a preservative. The pH is adjusted to between 6.8 and 7.2.
Indications and Usage for Betamethasone Sodium Phosphate and Betamethasone Acetate
When oral therapy is not feasible, the intramuscular use of Betamethasone Sodium Phosphate and Betamethasone Acetate Injectable Suspension is indicated as follows:
Allergic States Control of severe or incapacitating allergic conditions intractable to adequate trials of conventional treatment in asthma, atopic dermatitis, contact dermatitis, drug hypersensitivity reactions, perennial or seasonal allergic rhinitis, serum sickness, transfusion reactions.
CLINICAL PHARMACOLOGY
Glucocorticoids, naturally occurring and synthetic, are adrenocortical steroids that are readily absorbed from the gastrointestinal tract.
Naturally occurring glucocorticoids (hydrocortisone and cortisone), which also have salt-retaining properties, are used as replacement therapy in adrenocortical deficiency states. Their synthetic analogs are primarily used for their anti-inflammatory effects in disorders of many organ systems. A derivative of prednisolone, betamethasone has a 16β-methyl group that enhances the anti-inflammatory action of the molecule and reduces the sodium- and water-retaining properties of the fluorine atom bound at carbon 9.