Is data available regarding the shelf life of a glycerol-water enema prepared with a formula of 25 ml glycerin and 75 ml purified water without added preservatives, and is it possible to add a concentrated hydroxybenzoate solution to this preparation?

What is the best method to prepare a vaginal gel containing 2 g testosterone propionate, 2 g lidocaine base, and 1 g hydrocortisone in 100 g anhydrous carbomer gel, considering that the mixture becomes completely liquid when using a Samix mixer?

According to the client, would a solution containing 5 mg triamcinolone, 50 mg salicylic acid, 0.5 mg benzalkonium chloride, 10 ml ethanol, and 10 ml aqua be colored red, and is this possible?

What shelf life could be attributed to a gel based on methylcellulose and glycerin with the active ingredients tetracaine, cocaine, and adrenaline?

Is it possible to make vanilla syrup using vanilla aroma or vanillin, and if so, what is the formula for this, given that the NF V contains a formula for vanilla syrup with vanilla tincture but this tincture is no longer available?

How can a mouthwash composed of 4 grams of tetracycline HCl, 2 grams of lidocaine HCl, 1 gram of hydrocortison, and syrupus simplex BFV up to a total of 75 grams be prepared, and what are the instructions for the patient to hold the suspension in the mouth for 3 minutes twice daily before spitting it out?

What are the stability problems of a solution containing 3 grams of Phenobarbital sodium and purified water up to 300 cc?