Opodeldocs are semi-solid liniments; they are prepared as follows:-

Take of

White Curd Soap............................

4 1/2 ounces;

Rectified Spirit..............................

15 fluid ounces;

Distilled Water.................................

9 fluid ounces.

Dissolve the soap in the water by a gentle heat, then add very gradually the rectified spirit and the medicine (in the proportion of 1 fluid drachm of mother tincture to 9 fluid drachms of the opodeldoc), stir well, and while still fluid strain and pour into bottles.

Arnica and Rhus are the chief medicines used in this form.