What is the formula for a magistral preparation of ear drops to treat a fungal infection, specifically regarding the description of the suspension or solution for a composition of miconazole 20 mg/g, and is there also a formula available that uses clotrimazole?

What is the cause and solution for the breaking of a numbing cream containing 20 g lidocaine, 28 g cetomacrogol emulsifying wax, 23.4 g liquid paraffin, 42 g white petrolatum, 18.6 g propylene glycol, and 68 g purified water, given that the base forms correctly but the emulsion breaks upon adding lidocaine HCl, a concentration not found in references like Martindale despite its reported use in the Netherlands?

What is a generic alternative for Lysodrop?

What is the optimal method to prevent the recurring crystallization and precipitation of a veterinary oral solution containing 50 g ferrous sulfate heptahydrate, 60 g glucose, and water up to 200 ml, which is currently prepared by heating and administered to livestock at 15 ml per liter of drinking water, and are there specific solubility curves or additives that can help stabilize this high-concentration base at room temperature?

What is the best way to add 3 mg of beclomethasone dipropionate to Colitofalk 4g/60g enemas for a patient who has been using them for a long time, and is it appropriate to first dissolve this amount in a small quantity of ethanol before adding it to the enema?

Is there a formula available for a cream with 5% griseofulvine intended for topical application?

How can 5% Protargol solutions for bladder instillations be sterilized and what is their stability period, and is the recommendation in Martindale, Merck Index, and Dorvault to prepare these solutions fresh based on chemical or microbiological reasons?