Suggest Remedy For Elevated Blood Sugar Level And BP Post Cephalexin And Glipizide Tablets

I do have a question. My husband took a cephalexin 500 mg at dinner along with glipizide 5 mg. After eating he felt lite headed, dizzy and nausaus. He took his blood sugar reading. It was 225. He checked his blood pressure 122/68. Pulse 75. He rechecked blood sugar 30 min later ...192. Can you suggest anything else to do? My Email is YYYY@YYYY