How can I prepare the following nasal drops with paraffin oil: Ephedrine HCl 300mg, Menthol and Camphor 30mg each, Chlorobutanol 150mg, liquid Paraffin 15ml, and Water up to 30ml?

What is the best way to prepare a suspension containing 20 g benzocaine, 5 g lidocaine, 6 g tetracaine, 6 g DMSO, 3.6 g Klucel, 7.2 g glycerol, and aqua conservans up to 100 grams?

Does anyone know "anthrasoli" for the following preparation: salicylic acid 5, castor oil 50, anthrasoli 5, olive oil ad 100? Since anthrasoli was used for both alcohol and oil solutions and given the presence of oil in this formula, would it be appropriate to prepare 20 g of a 5% coal tar dispersion (5.0 g coal tar and liquid paraffin up to 100 g) by gently mixing the tar into the oil in portions, heating gently if necessary, and transferring it to a dark brown glass container?

What is the recommended preparation method for a phenytoin cream intended for Sudeck's syndrome, given that the basis was not specified, it is the first time the physician is prescribing it following a specialist's recommendation, and while the APB suggested using a PEG or Natrosol gel basis, the latter is unavailable, there is no existing protocol for this preparation in Belgium, gabapentin cream or ointment was suggested as an alternative, and a formula developed by a Dutch pharmacy in collaboration with a neuropathic pain center is patented?

What is the formula for Erythromycin 4% cream, which consists of 4g erythromycin base, 10g isopropanol 70%, 5g Lanette wax SX, 5g sweet almond oil, and water up to 100g?

What is the required ratio of polyethylene glycol 400 to polyethylene glycol 4000 to be used as a replacement for "WAXOL"?

Why does a cream containing 4% erythromycine and 4% hydroquinone in an anionic hydrophilic base turn pinkish-red, and is this combination also unstable and prone to discoloration when prepared in a Beeler base?