Abbott Products Gmbh

Solvay Pharmaceuticals, Gmbh

Ingo Bonnacker

Bernd Thumbeck

Martina Lerch

Gerhard Kristen

Christine Reichel

Hartmut Koehn

A method of producing a pharmaceutical preformulation in the form of a solid, free-flowing dry extract of a natural mixture of conjugated equine estrogens, which is particularly suitable use in for solid galenic forms, e.g. tabletting. The conjugated estrogens are available for further galenic processing in a form which assures the chemical stability of the hormones and permits advantageous processing into solid galenic forms, for example a tablet.

Preformulation for tabletting natural mixtures of conjugated estrogens

A pharmaceutical preformulation in the form of a solid, free-flowing dry extract of a natural mixture of conjugated equine estrogens, which is particularly suitable use in for solid galenic forms, e.g. tabletting. The conjugated estrogens are available for further galenic processing in a form which assures the chemical stability of the hormones and permits advantageous processing into solid galenic forms, for example a tablet. The invention furthermore relates to a method for producing these preformulations in the form of a dry extract.

Solid and liquid pharmaceutical preparations containing cilansetron or its acid addition salts as active substance which include an amount sufficient to stabilize cilansetron against racemization, of a physiologically compatible water-soluble acid additive selected from monobasic or multibasic organic acids having 2 to 12 carbon atoms with a first p.sub.s value between 1.1 and 4.8, acid salts of the aforementioned multibasic organic acids, and acid salts of multibasic mineral acids having a first available pK.sub.s value between 1.5 and 7.5, as well as the use of such acid additives for stabilizing cilansetron against racemization in pharmaceutical preparations.

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Nordstemmen, Germany

Ingo Bonnacker