What is the formulation for ear drops with econazole nitrate containing 0.3g econazole nitrate, 89mg Tween 80, and 223mg Klucel in aqua conservans up to a total of 30g?

What is the shelf life of Lugol's solution, composed of 5 g iodine, 10 g potassium iodide, and water up to 100 g, given that this preparation is not listed in the Therapeutic Magisterial Formularium?

Can a dermal solution containing tetracaine, cocaine, adrenaline, and NaCl 0.9%—where tetracaine and cocaine powders are dissolved in adrenaline and NaCl and then sterile filtered—be stored outside the refrigerator for 6 months, considering that adrenaline itself has a 6-month shelf life at room temperature and UZ Leuven stipulates a 2-month refrigerated shelf life for this preparation, or is there a possibility it remains stable for 2 months at room temperature due to the sterile filtration, which is relevant for storage in emergency cabinets?

How can a 100 ml preparation of 4% erythromycin in a 1% hydroxypropyl methylcellulose (HPMC) solution be formulated to avoid precipitation, given that erythromycin is poorly soluble in water and a precipitate forms when the 1% HPMC solution is added to a 1:5 erythromycin-ethanol solution?

Is a laminar air flow (LAF) cabinet necessary for preparing cyclosporine eye drops, given that a pharmacy in Brussels follows sterilization recommendations for castor oil and works as sterilely as possible without one, while many other pharmacists cite the lack of a LAF cabinet as their reason for refusing to make this preparation?

What is the function of sodium monohydrogen phosphate dihydrate in the TMF oral gel with hydrocortisone acetate and lidocaine HCl, considering it is the only oral gel in the TMF that contains this substance?

What is the best approach for preparing a scalp lotion consisting of 3 g saponine coaltar, 0.5 g prednisolone, and water up to 100 g, considering that prednisolone is insoluble in water and the 3 g of alcohol-based saponine coaltar is likely insufficient to keep the prednisolone in solution upon dilution, and how does saponine coaltar behave when diluted with water?