In what hydrophilic base can metformin 10% be incorporated to ensure good absorption into the scalp, as prescribed by a hair specialist?

Is it advisable to place a 1 g calcium carbonate tablet entirely into an empty capsule for a patient who has difficulty swallowing tablets but can manage capsules of the same size, and will this process affect the solubility or release of the medication?

What is the recommended solution to prevent capsules containing 350 mg cysteine HCl, 150 mg ascorbic acid, 10 mg zinc orotate, 15 mg tocopherol acetate, and 20 mg anhydrous colloidal silicon dioxide from breaking open after several weeks, despite the presence of the silicon dioxide?

What compounded solution can be prepared for a 6-year-old child suffering from excessively sweaty hands?