So, I recently started using it. Was going to run albut and t3 as I've been running t3 for about 3 months now with great success. I started with 2mg x 2 times a day. The first day my heart was racing (was 110-120bpm!). So I lowered the t3 dose...same thing. Took a few days off and went with just the albuterol (2mgx2) and heart rate has been just fine. I guess my body just doesn't like the stack. Oh well.
On a side note, also took keto the first night. Slept fine, however, I felt out of it for over 12 hours--didn't like it at all. So not running that at all. I plan to run albuterol for 3 weeks then t3 for 3 weeks, etc.