What is the best way to prepare ear drops containing 20 mg triamcinolone acetonide, 20 mg salicylic acid, 2 ml ethanol, and 0.05% chlorhexidine digluconate up to 10 ml, given that the substances do not dissolve well and oil-like spots appear (likely from the 20% chlorhexidine digluconate solution used to prepare the 0.05% dilution with water), and would a more viscous solution be preferable since the current preparation is very liquid?

Could you provide the quantity of physiological saline and the preparation method for the following formulation: 10 g urea, 10 g coal tar, 40 mg betamethasone propionate, 3 g cholesterol, physiological saline q.s., and white petrolatum up to 100 g?

What is the best base for preparing a hair lotion (or cream) containing betamethasone dipropionate, chlorhexidine (and in which form), and erythromycin, in terms of stability and biological availability, as requested by a physician?

What is the recommended method for incorporating dry extracts into suppositories?

Alcasol eye drops have been taken off the market; is it possible to prepare these ourselves?

What is the complete composition for menthol talc with Vioform for a 4-year-old child with chickenpox, given that the child suffers severely from eczema and the doctor advises against oral preparations?

What are the potential incompatibilities in a nasal ointment containing 3 vials of Fluimicil, 200 mg eucalyptol, 500 mg sodium borate, 200 mg ephedrine base, 5 drops of 1:1000 adrenaline, 20 g vaseline, and 10 g sweet almond oil, given that the resulting preparation was not optimal?