This is Dr. David
it sounds like your blood pressure is still not well controlled, even with the higher dose of amlodipine.
taking a one time high dose of 40mg is most likely not a problem.
but you should let your doctor know this happened.
and you need to follow up with your doctor to get your blood pressure under better control.
your heart rate is fast as well and you need to be checked for thyroid problems and afib and other issues.
you can either see your doctor right away or go to the A&E and see a doctor there.
thank you i will call my gp .
you are welcome
best of luck to you
let me know if you have other questions.