How can a successful preparation be achieved for a mixture of 4g erythromycin and 40g Cleanance creme teinté, given that it currently results in a sticky, mastic-like, non-granular mass, and although Avène's Creme pour peaux intolérantes provides a better result, it is still not optimal?

When Cetiol is mentioned in a prescription, is it permissible to use Cetiol V, and is Cetiol V the same product as Cetiol or does Cetiol exist as a separate raw material?

Is there a possibility for a compounded preparation of Actifed syrup?

Is it permissible to dilute and process Omic 0.4mg (tamsulosin) to reduce the dose to 0.2mg, considering it is a sustained-release formulation and the 0.2mg strength is a specialty product in Asia, while ensuring the same plasma concentrations are achieved?

What is the best procedure for preparing a cream containing 2% hydroquinone, 4.7% n-acetylcysteine, 0.05% triamcinolone acetonide, and 2.5% propylene glycol in a lanette cream base up to 30g, and is it necessary or permissible to add glycerol to dissolve the hydroquinone and stabilize the mixture with disodium EDTA and lactic acid?

What is the reason for the difficulty in preparing the hydroalcoholic solution with aluminum chloride TMF, specifically regarding why the aluminum chloride does not dissolve in isopropanol despite dissolving in alcohol within seconds, and what is being done incorrectly?

The following formula for Valium rectal tubes contains sodium benzoate as a preservative: 10 mg diazepam, 2.4 mg benzoic acid, 0.9 cc propylene glycol, 0.3 cc 94% ethanol, 100 mg sodium benzoate, and distilled/purified water up to 2 cc; is there a specific reason to use sodium benzoate as a preservative instead of aqua conservans?