I am on APO-Metoprolol 50mg but I have cut the dose in half to 25mg a day early morning after exercise so the effects are less when I exercise in the morning the next day.
This dosage still works but allows me to exercise (ride bike) at full effort but hugely lessens my heart rate so I can do a hard Z2/3 ride and have an average HR less than 120 but my muscles feel tireder as they are NOT getting the required blood flow it seems…it is definitely different but is working.
On hard efforts my HR will still climb upwards to 170’s - 200’s but my ride’s average will still be in the 120 - 130’s.
During the last six months I have actually felt I have improved and have beaten so many of my PR’s and my FTP was also up when I did a ramp test.
I unfortunately had an accident and rode off the road when sweat stung my eyes on a particular hot morning, broke some ribs etc and although I am back riding those four weeks off the bike spoilt all my breakthroughs…