Anecdotally,
My moms have used APNO in ointment form and it's been good for over a year. 
[they had some left over]
Gail
Gail S. Hertz, MD, IBCLC
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Kirsten writes;
> Greetings wise ladies, We have had a large batch of APNO mixed by our 
> pharmacy that we are distributing through our clinic (much more convenient 
> for moms to just get it while they're here, and we can sell them a smaller 
> amount - for less than compounding a whole batch for each mom). However, 
> in dealing with OCEA regulations, every medication needs to have an 
> expiration date - which the pharmacy is unable to provide us with. They 
> have expy dates for each of the components, but are not able to certify 
> that by blending them we don't cause an interaction that speed the 
> degradation of any of the ingredients. so - has anyone been able to find a 
> way around this to be able to determine the shelf life/stability of APNO? 
> The blend we are using is betamethasone 0.1%, mupirocin powder so final 
> concentration is 2%, and miconazole (don't have final concentration right 
> here). this particular batch is compounded in a cream, not ointment, base, 
> though in the future we will be using an ointment per Newman's 
> recommendation.
>
> If we can't provide this, they will randomly impose a 30 day shelf life 
> and make us toss what's not turned over in this time.
>
> Thanks loads!
> Kirsten Berggren
>

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