[MHGinTN]

0₂ and sunlight degrade medications. Store in a cool dry place with as much air out as possible. No need to refrigerate for long term storage. A few bottles of hydrogen peroxide are useful, too. excellent wound cleanser. Dilute a tablespoon full in pint and a half of filtered water to make an good mouthwash, plax fighter.

[Godzilla]

02 and sunlight degrade medications. Store in a cool dry place with as much air out as possible.

OK, sounds like storing in a sealabel container with either 02 sorbers or 02 displaced by dry ice would be the ticket eh?

I'll keep hydrogen peroxide in mind too as I'm looking for antibiotics for external application as well.