Could you provide us with a method of preparation for methyltestosterone in a gel?

Does a compounded preparation already exist for Nizoral oral suspension with sodium benzoate as a preservative, given that this medication is no longer commercially available and students are determining the sodium benzoate content via HPLC?

How should 5% urea and 3% lactic acid be incorporated into eucerin cum aqua up to 100 g, considering that urea cannot be heated and water is the internal phase, given that simply rubbing it with the base places urea in the external phase, and can lactic acid be heated?

How can the following formula for methadone syrup (5 mg/cc, 1.1 g Tween 20, 0.2 g mint essence, and distilled water up to 100 cc) from NF VI be optimized to prevent the crystallization that occurs 1 to 2 days after adding sodium saccharin to improve the taste?

Given that Phenergan cream is no longer on the market and a patient has requested it be recreated, is it possible to incorporate Promethazine HCl into a base such as Cetomacrogol cream?

What causes the following solution to precipitate immediately after preparation: 24 cc Beconase Aqua, 0.2 g glycerin, 0.9 g sodium chloride, 0.2 g propylene glycol, 100 mg neomycin sulfate, 6000 IU bacitracin, 20 ml Atrovent monodose, and water up to 100 ml?

When preparing compound menthol cream NF VI, why do we always obtain a milk instead of a cream, and what are we doing wrong or how should the formula be improved for this preparation to succeed?