What is the explanation for the hard sediment formed in a syrup containing 2 g of crushed sertraline tablets and 200 mg of xanthan gum (moistened with glycerol) in 200 ml of purified water, and can it be assumed that the sertraline has dissolved while the sediment consists only of tablet excipients?

Zinc stearate for diaper ointment is no longer available; can it be omitted or replaced with something else in a regularly made formula consisting of 30 g zinc oxide, 6 g zinc stearate, 6 g magnesium stearate, 90 g cod liver oil, and lanolin up to 300 g?

What is the appropriate use of tea tree gel for application on a wound following surgery?

Is there a formula for a minoxidil 5% spray lotion with a lower alcohol content than Alopexy 5% for a patient who is satisfied with the results but experiences a red, itchy scalp, noting that Fagron foam base was unsuccessful and left the hair greasy?

Will a preparation of 4% liquor carbonis detergens in eucerin cum aqua be successful?

What is the best way to process L-thyroxine 200 tablets into a liquid oral form, given that a specialist suggests this could improve absorption for a young, thin patient who is not achieving the desired results despite a high dose?

What is the explanation for why a formula for prednisolone 5 mg/ml syrup requires 7.4 mg/ml of prednisolone sodium phosphate, given that a calculation based on the molecular weights of prednisolone (360.40) and prednisolone sodium phosphate (484.4) results in 6.7 mg?