As Flamiclens is currently out of stock at the company and a doctor has requested a custom formulation, is it necessary to add a citric acid buffer to a proposed mixture of 5% acetic acid, 0.9% NaCl, 0.01% benzalkonium chloride, and aqua conservans, or do you have an alternative suggestion?

What could be the cause of a cream containing 0.25g prednisolone, 1g erythromycin, 5g zinc undecylenate, 5g salicylic acid, 5g almond oil, and Beeler basis up to 50g breaking twice for a client, considering that there are no apparent incompatibilities but the thermal labels showed discoloration, leading to the suspicion that the cream is being stored at a temperature that is too high?

Given that Zitromax syrup is very bitter, what are the best ways to improve the taste of this syrup?

What is the recommended formulation for an antiperspirant solution to be used on the scalp, specifically for the neck and back of the head, for a female patient who also applies minoxidil 5% to the crown of her head?

What is the shelf life of atropine eye drops without preservatives, is a one-month period after opening too long compared to the standard 14 days, and can a RIZIV-reimbursed preparation be simplified by transferring 1 ml from a 1 mg/ml atropine sulfate ampoule into a sterilized vial using a sterile syringe and adding 9 ml of sterile physiological saline?

How can a cream equivalent to Wartec be prepared using podophyllum resin, given that Wartec contains 0.15% podophyllotoxin and the toxin concentration in the available resin varies, and what specific concentration of the resin—labeled as pelt and analyzed according to USP standards—should be used in a buffered cetomacrogol cream base, similar to the example found on the Qualenica prescription helpdesk site?

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