A 27-year-old male asked:
i've been on atenolol 25mg daily split dose for 3 months. works well for me. how long after i take the pill does it start actually reducing hr and bp?
2 doctor answers
Dr. John Michel answered
46 years experience Family Medicine
Almost immediately: The pill works shortly after it has been taken even the first time. This will begin working within the first day but may take another day for some to be in your system. This is a long acting med and some is doing something most of the time.
Answered on Apr 4, 2015
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