I was putting together a MED KIT so I asked my family Dr. about expiration dates and what I should include. He told me what I expected about Alcohol, Peroxide, Vasiline, Anti fungal creams, Antibiotics, Epsom Salt, Anti-inflamatories, Pain meds, bandages, blah, blah, blah, on and on. Then he told me not to get real concerned about expiration dates. Most meds will still work after years of storage as long as you keep them in a house environment where they are kept at a constant temperature and away from light. He said antibiotics will still work after many years but they may have lost some of their potency and you might need a larger dose than normal. He said if you take them and they aren't working as well as you think they should, then up the dosage on old meds. I wouldn't get all stupid and double the dose.