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Question

Posted on: March 6 2013

I got following preparation from NKO arts:

Polymyxin B 100,000 E
chloramphenicol 50mg
Propylene glycol 5ml
Water 5ml
Hydrocortisone sodium phosphate 50mg

fac ear drops, sterile prepare
S/3 x 2 dr/day both ears for 7 days < br/> Opm: Hydrocortisone Sodium phosphate no longer exists: possibly replaced by acetate, such as formula mentioned on your website?
question: Sterile preparation? It is for a child with Diabolos: so perforated ear!!

Answer

  1. as you write: Sterile prepare
  2. Ask the doctor if hydrocortisone after phosphate may be replaced by prednisolone or dexamethasone after phosphate, both of which are also soluble in water. Hydrocortisone acetate requires you to prepare a sterile suspension
  3. Propylene glycol is not suitable for the inner ear and should be removed so that I fear that 50 mg of chloramphenicol no longer dissolves unless in the presence of boric acid. But these 2 products are unlikely to be recommended for the inner ear. You could suggest to the Doctor neomycin sulfate to replace chloramphenicol.

I end with a reference to a composition, which is published in the TMF 2 ° part.

R/Polymyxin B sulfate 500,000 IU Dexamethasone sodium phosphate 36mg Neomycin sulfate 250mg Propylene glycol 10g Excipiens AD 50ml

The composition of the excipient is:

Citric acid 1aq 112.5 mg After citrate 7.5 g Na EDTA 250mg Purified water up to 250ml

But these ear drops are intended for the external auditory canal. The presence of propylene glycol will be in the middle of something.