What is the composition of a piperazine citrate elixir for a 4-year-old child weighing 10 kg, given a prescribed dosage of 75 mg/kg for administration via a gastric tube?

Is there a difference in the speed of action of lidocaine (5%) when formulated in buffered cetomacrogol cream versus carbomer gel?

What is a suitable alternative for sodium anisate in a suppository formulation containing 350 mg of theophylline monohydrate and 350 mg of sodium anisate, given that sodium anisate is no longer available and its removal—as suggested by the physician—could negatively impact the biological availability for a patient who has used this preparation for years?

Can a zinc-containing mouthwash composed of 1 g zinc chloride, 2 g zinc sulfate, 1 cc 20% hydrochloric acid, 3 g spirit of peppermint, and chloroform water up to 100 cc, with instructions to dilute 20 times and rinse the mouth twice daily, be prepared in this manner and is it safe to use?

How can a stable cream be prepared when a W/O cream containing 4% salicylic acid, 6% liquor carbonis detergens (LCD), and 0.01% betamethasone dipropionate in AVA cream up to 300g breaks after heating the AVA cream with LCD and rubbing it with salicylic acid, even after adding extra Arlacel, and why did the addition of sodium lauryl sulfate result in a stable formulation?

What is the solution for the liquefaction of a preparation containing 10 g mephenesin, 1 g methyl nicotinate, 40 g PEG 1500, and 4% carbopol gel up to 100 g, given that adding extra base does not help?

What is the cause of needle-like precipitation in a topical solution containing 4.00 g salicylic acid, 3.00 g resorcinol, 10.00 g propylene glycol, 30.00 ml ethanol 96°, and water up to 100.0 ml, given that the mixture became cloudy after combining a solution of salicylic acid in alcohol with an aqueous resorcinol and propylene glycol mixture, and why does this precipitation occur even after heating when a similar preparation with 3 g salicylic acid and no propylene glycol is successful?