How can the discoloration of Vitamin A from yellow to white be prevented in a nasal ointment containing 400 mg Fluimucil, 300,000 IU Vitamin A, 5 g almond oil, and 25 g vaseline, given that the Fluimucil was dissolved in 2 ml sterile water to prevent agglomerates and processed with a dynamic ointment mill to remove remaining lumps?

What is the formula for the compounded preparation dexamethasone oral solution 1 mg/ml FNA (mixtura dexamethasoni FNA)?

What are the causes of precipitation in Mouthwash I, containing 5 g sodium bicarbonate, 10 g propylene glycol, 2 g Tween, 2 g amylocaine, 5 g myrrh tincture, 5 g opium tincture, and mint water up to 100 ml, and how can this be addressed alongside the preparation of Mouthwash II, which consists of 3 g sodium bicarbonate, 5 g borax, 10 g glycerin, 2 g amylocaine, 10 g myrrh tincture, 10 g opium tincture, and mint water up to 100 ml?

Is it true that a 1% isosorbide dinitrate cream for the treatment of anal fissures must not be dispensed in an aluminum tube due to a potential reaction, but should instead be stored in a jar, requiring the patient to apply it using finger cots rather than a cannula?

Why does a cream containing 0.5 g prednisolone, 2.4 g erythromycin, and cold cream up to 100 g (composed of 8 g white wax, 10 g cetaceum, 52 g peanut oil, 5 g Arlacel C83, 20 g aqua conservans, 5 g castor oil, and 0.2 g sorbic acid) break, is there an incompatibility between erythromycin and Arlacel, and why was the preparation successful when made using unbuffered cetomacrogol cream NF6 instead?

Is it possible to formulate the product ethosuximide (brand name Ethymal 250 mg per capsule) into suppositories?

What are the stability problems of a solution containing 3 grams of Phenobarbital sodium and purified water up to 300 cc?