Drug – bio-affecting and body treating compositions – Preparations characterized by special physical form – Liposomes
Patent
1995-07-10
1997-12-02
Kishore, Gollamudi S.
Drug, bio-affecting and body treating compositions
Preparations characterized by special physical form
Liposomes
514937, 514943, A61K 9127
Patent
active
056933371
ABSTRACT:
A lipid emulsion which comprises (A) an oil component, (B) an emulsifying agent containing yolk lecithin and/or soybean lecithin, and (C) water, wherein the lipid emulsion further comprises citric acid or a pharmaceutically acceptable salt thereof and at least one member selected from the group consisting of methionine, phenylalanine, serine, histidine and pharmaceutically acceptable salts thereof, provided that it does not simultaneously contain methionine and phenylalanine. The addition of citric acid and histidine, methionine, phenylalanine and/or serine to a lipid emulsion containing natural lecithin as an emulsifying agent permits the prevention of change of color and formation of oil drops associated with the conventional natural lecithin-containing lipid emulsion due to the synergistic effect of the foregoing additives. The drug-containing lipid emulsion is also excellent in storage stability and thus the foregoing lipid emulsion can be applied to drugs such as injections, eye drops, nasal drops, lotions or liniments, inhalants and drugs for oral administration or cosmetics such as humectants.
REFERENCES:
patent: 4290910 (1981-09-01), Harada
patent: 4970209 (1990-11-01), Wretlind
Handbook of Oils and Fats Chemistry (edited by Nippon Oil Chemistry Association, published on Showa 33(1958), Jan. 25, pp. 658-659.
Handbook of Oils and Fats Chemistry (revised 3rd edition, edited by Nippon Oil Chemistry Association, Published on Heisei 1(1990), Feb. 28, pp. 76-77 .
Endo Kenji
Maeda Makoto
Naito Yoshikazu
Oguma Touru
Suzuki Hidekazu
Kishore Gollamudi S.
Wakamoto Pharmaceutical Co., Ltd.
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