A doctor is requesting an aqueous solution of methadone; what is the best swelling agent to use for this preparation, and is the suggested use of methylcellulose at a concentration of 0.5-1% appropriate?

What is the cause of a suppository breaking, with the powder settling completely and a light yellow discoloration occurring?

Can the immediate-release form, consisting of capsules with small granules, be used as the source of hydromorphone in the following prescription: hydromorphone 1.5 mg, ibuprofen 120 mg, dispense 60 capsules?

For a mouthwash prescribed by a dentist to stimulate salivation for a clogged salivary gland, consisting of 200g of equal parts glycerin and water flavored with lemon juice, is there a recommended amount of lemon essence to use, or would it be better to add citric acid?

What is the recommended preparation method for a formulation containing 0.5% menthol, 5% urea, 30 g Locoid cream, 100 g cold cream (Alphapharma), and 100 g water?

How can a solution containing 14 g salicylic acid, 14 g resorcinol, and 14 g lactic acid be successfully prepared when using a mixture of disinfectant alcohol and ether up to 100 ml, given that the ingredients currently fail to dissolve together?

Is it possible to use 600 mg boric acid capsules for vaginal insertion?