What is the best preparation method for 20 suppositories containing 100 mg ichthammol, 50 mg lidocaine HCl, 2 mg prednisolone, and 5 mg belladonna extract?

Can clindamycine HCl be used in buffered cetomacrogol cream instead of the more expensive clindamycine phosphate for a vaginal cream containing 0.1% estradiol valerate, 1% clindamycine, and 1% miconazole nitrate, and what is the shelf life of the preparation in both cases?

Can erythromycin be added to Flaminal Hydro, and if so, does the alginate in the formulation complex the erythromycin, leading to a loss of activity, and what is the specific pH of Flaminal Hydro given that erythromycin requires a basic environment?

What is a good composition for a triamcinolone acetonide scalp lotion at a concentration of 0.1%?

How should a preparation containing salicylic acid, benzoic acid, and tartaric acid in glycerol ointment be prepared, and can these acid-reacting substances decompose the starch, thereby preventing the formation of the paste?

Is the concentration of sodium lauryl sulfate in the following shampoo formula—consisting of 10 ml lactic acid, 50 g sodium lauryl sulfate, 1 g saponinated coal tar, and water up to 100 g—too high, and what effect will this have on the viscosity?

What would be the appropriate procedure for incorporating 5 mg of beclometasone dipropionate into a Colitofalk enema, following a request from a specialist?