What is the formulation and preparation method for Adrenaline 1% eye drops intended for diagnostic use as a single dose, given that the preservative phenylmercuric borate is no longer available, specifically using 1.82 g adrenaline bitartrate, 200 mg vitamin C, 2.95 g borax, and 300 mg sodium metabisulfite in sterile water up to 100 ml, with 10 ml of the solution filtered through a sterilized 0.2 µm Millipore filter and delivered 1 to 2 hours before the ophthalmologist appointment?

Can prednisolone syrup for pediatric use be prepared without a buffer, is it better to use prednisolone sodium phosphate for the preparation, and if this syrup can also be made without a buffer, what would be its shelf life?

Can this preparation, consisting of 0.3g triamcinolone acetonide, 0.3g propylene glycol, 5.9g hypromellose 4000 mPa.s, and white petrolatum up to 30g, also be made using Klucel 300 mPa.s instead of hypromellose, or would the viscosity be too low, and could methylcellulose 450 mPa.s be used as an alternative?

What is the recommended preparation method for a W/O cream containing 4 g cetyl alcohol, 14 g white petrolatum, 20 g purified water, 57 g sweet almond oil, and 5 g castor oil, given that the resulting 100 g of cream is currently very runny?

Why does an O/W cream containing 60 g white petrolatum, 30 g almond oil, 30 g Lanette N, and water up to 300 g break, despite the high petrolatum content?

How can a homogeneous mixture of Vitamin A (retinol) and Vitamin E (tocopherol acetate) be prepared in capsules, and what should be added to prevent separation, given that previous attempts using an emulsifier and silica gel were unsuccessful?

Is it possible to prepare a 40% urea concentration in cetomacrogol cream, or will the cream break?