Regarding magistral preparations, capsules and syrup are used for administering methadone to drug addicts; since official texts mention "suitable" swelling agents for capsules, is there an officially accepted composition for the syrup?

What is the recommended preparation method for a dentist's formula containing 17 g of Na2EDTA and aqua purificata up to 100 ml, neutralized with 5N NaOH to a pH of 7, which is used to remove the smear layer from the canal wall?

Is there an alternative to Erythrocine syrup since it is unavailable from the laboratory, and is it possible to create a suspension using SyrSpend and sodium bicarbonate?

In the local area, there is a workshop on how to make syrup where 5 grams of levomenthol is processed into 1 liter of syrup; since no justification for this is found in Martindale, is levomenthol suitable for internal use and is this dosage not too strong?

How can a cost-effective omeprazole suspension be formulated to improve upon the TMF composition, which is considered suboptimal due to its poor taste and lack of viscosity, the latter of which is necessary to minimize volume loss from drooling in infants?

Is it permissible to prepare a 0.01% atropine eye drop solution for a one-month shelf life by diluting original 1% atropine (pH 4.8) with a standard artificial tear such as Optive (pH 7), which already contains a preservative, instead of using a more complex compounded formulation with added benzalkonium chloride?

What is the correct dosing and compatibility for a preparation containing 21 mg betamethasone dipropionate, 8 million units (ME) nystatin, 5 g zinc oxide, 6 g Arlacel, 30 g white petrolatum, and purified water up to 100 g, given that the prescribed 300 g total results in 24 million units of nystatin, which appears to be ten times the standard dose, and considering potential incompatibilities between zinc oxide and nystatin?