Hi. I take Xanax XR 3 mg every morning at 5 a.m. Due to a pharmacy mix up I ran out today and can't pick it up until 10 a.m. tomorrow morning (it's at a Walgreen's and I thought they were 24 hours - I'm new in town and unfamiliar with store hours.). Will I start to feel withdrawal symptoms due to the five hour delay? I also have a prescription for regular Xanax .5 mg - if I took that at 5 a.m. would it prevent withdrawal? I know it's only a five hour difference, but because my anxiety is severe I'm already panicking about this. Thanks for any help or advice.