I have xanax and propanolol but am afraid to take the prop. The .25 xanax works fine but I have multiple attacks a day. What does it feel like? Taking new things triggers attacks for me. Today I had to go to the ER. Dizziness, numb arms and legs, slurred speech, 165 I have xanax and propanolol but am afraid to take the prop. The .25 xanax works fine but I have multiple attacks a day. What does it feel like? Taking new things triggers attacks for me. Today I had to go to the ER. Dizziness, numb arms and legs, slurred speech, 165 bpm heart rate and elevated blood pressure. I thought I was going to die. I had to take .75mg xanax to finally kill it. Does Prop help in situations like that?