What is the recommended composition for a custom-made 15% verapamil cream intended to treat plantar fibromatosis, as requested in a recent prescription?

Given the shortage of Amoxiclav syrups, can a suspension be prepared by crushing tablets and incorporating them into xanthan gum excipient or syrupus simplex, assuming the xanthan gum excipient is correctly dosed with propylene glycol and safe for children, and that the target pH should be between 5.5 and 6.0?

Given that the raw material nystatine is now stored in airtight containers at room temperature rather than in the refrigerator, can a preparation containing non-sterile nystatine, 7% zinc oxide, and 0.50% chlorhexidine acetate in buffered cetomacrogol cream (TMF), which was previously refrigerated, now also be stored at room temperature, and are there any incompatibilities between these ingredients?

What is the recommended method for preparing a 4 mg/ml sildenafil syrup for a 4 kg dog suffering from moderate pulmonary hypertension and mitral valve endocardiosis, and do you have experience with this specific formulation?

How should a pharmacist address the compatibility and stability issues in a prescription for 50 g of cetomacrogol cream containing 2% erythromycin, 1.2 million I.E. nystatin, and 0.5% prednisolone, given that erythromycin requires unbuffered cetomacrogol cream, nystatin is most stable at a neutral pH but may form salt or ion pairs with erythromycin, and prednisolone is most stable at pH 4-5 in buffered cream, and is it necessary to prepare and apply these as three separate creams?

What would be an appropriate preparation method for a syrup or suspension for a cat, using 40 mg Micardis tablets to achieve a concentration of 10 mg/ml as a substitute for the unavailable Semintra, given that telmisartan is insoluble in water and alcohol?

Regarding a prescription for 100g of 1% sildenafil, 6% gabapentin, and 6% diclofenac in cetomacrogol cream for painful red spots on the feet during cancer treatment, is it better to use sildenafil tablets or the raw material sildenafil citrate (requiring conversion), is there a preference for diclofenac sodium or diethylamine, and is this formula stable?