Get your health question answered instantly from our pool of 18000+ doctors from over 80 specialties

139 Doctors Online
Doctor Image
Dr. Andrew Rynne

Family Physician

Exp 50 years

I will be looking into your question and guiding you through the process. Please write your question below.

Taking 2.5mg bisoprolol. Feeling lightheaded and pounding heart rate with dry eyes. Side effect?

Answered by
Dr. Anil Grover


Practicing since :1981

Answered : 922 Questions

Posted on Sat, 12 Jan 2013 in Medicines and Side Effects
Question: I am 4 weeks since successful ECV for A-Fib but have been suffering from rotten side effects from 2.5mg bisoprolol including very dry eyes, pounding heart and BPM as low as 44bpm. My GP is not happy to change medication as I have a return visit to Cardiologist in 8 days.
I have noticed that about 3 hours after I take the tablet I feel lightheaded and weird for 2-3 hours and then ok again. I took my blood pressure yesterday at this time and it was 90/55 . I would really like to cut down the tablets a wee bit and am wondering if I tried 3/4 of it would that be ok... this tablet has a half score XXXXXXX but not a quarter and am worried if I cut it again would it somehow affect the way it works? I am also on warfarin and getting on ok with it although I think it has to be stopped if I stay in sinus rythym. My normal reasting heart rate is about 58 (I am not fit!) and my BP is always normal. I just feel these tablets are a liitle too strong but dont want to jeapordize my Sinus Rythym either. Any advice please
Answered by Dr. Anil Grover 15 hours later
Thank you for writing in.
I am a qualified and certified cardiologist.
I read your mail with diligence.
Side effects with 2.5 mg Bisoprolol are rather uncommon but have been described in medical literature. First check you have the tablets of right strength that is 2.5 mg not 5 mg or 10 mg (you can check with pharmacy). I see no reason if you can monitor your heart rate going down to 44 and blood pressure to 90/55 why should you not reduce the total dose. You can use three scored tablet and divide them in way that you have roughly equal 4 parts and to be taken over 4 days. That way minor variation in daily dosage will be neutralized. Do not worry in 8 days time this reduction per se will not be responsible for your loosing sinus rhythm. After that time your cardiologist can take a decision. However, please do this if your GP agrees to it as XXXXXXX is not mandated to take prescription decisions, it can only suggest a way in emergency situations. The decision will have to be taken by your treating doctors. Good Luck.

With Best Wishes

Dr Anil Grover
Above answer was peer-reviewed by : Dr. Chakravarthy Mazumdar

The User accepted the expert's answer

Share on
Question is related to
Drug/Medication ,  

Recent questions on  Bisoprolol

doctor1 MD

i m on 10mg amlodipine, 5mg bisoprolol and 10mg ramipril. Since last friday (13th) I woke up with a painful right foot. The only thing to change recently was the addition of ramipril, I havent taken it since thursday, should I continue or stop? Any idea what this is and will it pass?

doctor1 MD

Have been having trigeminal, bigeminal beats followed by normal sinus rhythm over a period of hours.At other times skipped beats or extra beats. Am on Bisoprolol, klonopin and valium. Off and on over a prolonged period of years with varying s.ymptoms as described above. Have been physically active playing tenis 2 to 3 times a week. Present age 91. Symptoms may vary from one day to next. No shortness of breath or chest pain. Appreciate any recommendatons.

doctor1 MD

My mum (79) demanded that she come off bisoprolol after taking for 3 years, as she felt she should not have been on it. The doctor agreed and she is now suffering with increased heart rate (120bpm) at times, but wont see a doctor. She suffers generally with her nerves and feels that going back on the bisoprolol again will calm her down. Is she just panicing or will the panic attack be because of coming off the bisoprolol? She also came off bumetanide at the same time, for the same reason (ie she felt she should never have been put on those tablets)

doctor1 MD

Hi.I am a 35 year old male.Was prescribed bisoprolol 2 months ago for tachycardia and hypertnsion on exertion.My heart appears to be structurally normal. In the last 3 weeks I have noticed leakage of urine when I sit down.Is this related to the beta blocker?

doctor1 MD

I have been taking Corgard , 10 mgs., BID, for sometime, in combination with Lisinopril HCTZ and Zestril , to control hypertension . I am 68 years old and lately, I have been experiencing significant problems with maintaining an erection. I have...

doctor1 MD

What is the difference between Atenolol , and bisoprolol? I've taken Atenolol (1/2 25mg tablet) for at least 10 years. Now the pharmacy can't seem to get Antenolol in the 25 mg format, so my doctor is prescribing bisoprolol--5 mg tablets--I'm to...

doctor1 MD

what is the difference between amlodipine and bisoprolol