Storage stable topical pharmaceutical composition containing zin

Drug – bio-affecting and body treating compositions – Conjugate or complex of monoclonal or polyclonal antibody,... – Conjugated via claimed linking group – bond – chelating agent,...

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424145, 424289, A61K 3171

Patent

active

044696841

ABSTRACT:
A storage stable topical pharmaceutical composition containing zinc erythromycin, particularly useful in the topical treatment of acne vulgaris, is disclosed. This composition contains a solvent having a dielectric constant, measured at 25.degree. C., of from about 5.5 to about 15, preferably from about 8 to about 12, such as t-butanol, to impart storage stability to the zinc erythromycin component. The composition may additionally contain particularly selected pharmaceutically-acceptable nitrogen-containing stabilizer components, such as diisopropanolamine.

REFERENCES:
patent: 3472931 (1969-10-01), Stoughton
patent: 3562806 (1971-02-01), Grant et al.
patent: 3927197 (1975-12-01), Monkhouse
patent: 4000263 (1976-12-01), Hebborn
patent: 4006218 (1977-02-01), Sipos
patent: 4261982 (1981-04-01), Luedders et al.
Goldberg--Antibiotics, Their Chemistry and Non--Medical Uses, p. 102, 1959.
Balsam et al.--Cosmetics, Science & Technology, 2nd ed., vol. 1, pp. 42-43, 1972.
Chemical Abstracts 55:13767.

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