You guys are friggin funny. I'm taking antibiotics right now (at least it was a cheap date) and I left my medication in my car over night. Its about 15 degrees at night here. I called the pharmacist because this med (like the majority of them) should be stored at room tepmature. The pharmacist told me that the pills aren't useless but may not be as effective. I guess I'll find out if this rash ever disappears.