What is the maximum concentration of urea that can be used in an ointment for calluses on the feet, given that a 13% concentration, such as in the Widmer preparation, is insufficient?

What is the most suitable filler for making capsules containing 1.2 grams of Glycerol Tri-Erucate (GTE) oil?

How can hydrogen peroxide be prepared now that phenacetin is no longer available in bulk for stabilization, and what is the best substance and concentration to use, considering that phosphoric acid (5 g of a 10% solution per 1000 g), benzoic acid (insufficient stabilization), salicylic acid (widely available but effectiveness uncertain), and acetanilide are potential alternatives?

What is the preparation method for Morfine.HCl in Intrasite gel?

Is a conversion based on molecular weight always necessary when a physician prescribes the base form but the raw material is only available in salt form, specifically for cases such as hydralazine 25 mg (only available as HCl) or chlorhexidine 0.05% in a cream (diacetate or digluconate)?

Is it legally permissible to use Natrena tablets as a sweetener when preparing laxative lemonade, given the requirement that only recognized raw materials be used in compounded preparations, and if not, what alternative would you recommend?

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