Vraag
Gepost op: 29 maart 2026What 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?
Antwoord
Gepost op: 29 maart 2026Discussion of the preparation
This preparation involves a lotion. For the stabilization of erythromycin, the TMF should be consulted for the exact amount of citric acid to be added.
Preparation method
- First, prepare the emulsion according to the applicable regulations.
- Next, add the citric acid to the emulsion.
- Then, add the solution of erythromycin in isopropanol.
- Bring the preparation to the desired final weight in a tared bottle.
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