Low HR a side effect of Tamsulosin?

[NumptyOne]

I am new here and have done a quick search but didn't find anything on the specific side effect. I have been taking Tamsulosin for about a month now without any of the noticeable side effects mentioned on the NHS website. The issue I appear to have developed came on over the last week during exercise. I am relatively fit, and while riding I monitor HR, distance, cadence, power etc. so have a good idea what my normal is. The last 2 rides have seen a drop of about 10bpm during a steady ride, and an inability to get even close to my max HR during intervals or hilly sections of rides. I seem to be stuck at 130bpm, almost like the HR monitor is malfunctioning ( I have checked, it's not) The only other medication I am taking is 10mg of Citalopram and have been on this for years so nothing new there. Anyone else experienced this or am going to have to go on a Covid dodging mission and visit a GP?

Thanks in advance

[Hidden]

You are lucky. I seem to have every side effect mentioned on the NHS website! If anything, I have noticed my heart rate to be slightly faster. I suspect this is due to the vasodilation caused by tamsulosin’s alpha blocking properties.

I’m not sure your GP will be much help with your query, but I may be wrong.

[Hidden]

I am on doxazosin rather than tamsulosin. However my research seems to indicate that you could expect an increased heart rate from tamsulosin rather than a lowered heart rate!

[NumptyOne]

Thanks both. I was kinda hoping it would be the medication but looks like that should have the opposite effect. Dr's appointment it is then, getting old sucks

[markovitz]

Yes, Tamsulosin is an alpha blocker so it does lower the blood pressure, therefor will lower the heart rate.

[Hidden in reply to markovitz]

markovitz I have just checked the product insert that comes with my tamsulosin. It mentions palpitations due to an increase in heart rate. Beta blockers slow the heart, not alpha blockers.

[markovitz in reply to Hidden]

Alpha blockers lower BP....

[dellrobert]

the only side effect i had was acid reflux which i got to say has now gone and my urine stream seems to have returned to normal i did have a very bad urine infection that has now cleared i wonder if my prostate has shrunk won't know until i have a blood test in April so far is all well

[BexyBoy]

When I was taking Tamsulosin, I had postural hypotension, ie, drop in blood pressure causing faintness. I didn't ever pass out, but felt dizzy for a few seconds if I suddenly moved my head up from 'down dog' or 'standing forward bend' during yoga, or when standing up quickly from sitting. I also had retroactive ejaculation - ie semen going back into the bladder rather than out from the tip of my penis. Symptoms I found I could cope with while I needed the medication. Now take finasteride instead.