I was prescribed Cephalexin and have been taking it 4x daily now for 4 days. My other doctor prescribed Amoxicillin which was 2x daily since the infection was not getting better. I took my Cephalexin in the early AM then 2 hours later remembered I was switching meds so I took the Amoxicillin before it would have been time to take my next Cephalexin dose. I will not mix and will not take the Cephalexin again but after the fact am concerned I took the Amoxicillin too soon and should have waited longer. As long as I don't mix which I won't will this temporary mixing cause me harm?