What is a suitable formula for a gabapentin 4% oral gel, given that a prescription was received for gabapentin 4% in Pentravan cream for oral application, but Pentravan cream is considered unsuitable for this purpose?

Should lidocaine base or lidocaine HCl be used in the mucositis cocktail of UZ Leuven, which consists of 200 mg hydrocortisone, 400 mg lidocaine, 1 bottle of Nilstat suspension, and a suspension medium up to 500 ml, or would lidocaine HCl be more effective?

Regarding the stability of a minoxidil lotion, will the product remain sufficiently stable if filled into a transparent bottle, and what is the influence of light on its stability, specifically for a formula containing 5% minoxidil, 30% propylene glycol, and denatured 70° ethanol up to 100 ml?

What is the ideal amount of solid matter to achieve a good distribution when preparing suppositories?

Is any incompatibility expected when mixing Nizoral cream (o/w?) with 100 grams of Elocom lipophilic cream (w/o), given the different emulsion types?

In the context of using substances in dermatological preparations, should the base or the salt form be used for the following substances: lidocaine/lidocaine HCl, miconazole/miconazole nitrate, fusidic acid/sodium fusidate, gentamicin/gentamicin sulfate, and diclofenac/sodium diclofenac?

Can the combination of boric acid and nystatin be used in a veterinary ear suspension, and does complex formation occur?