I've been on metoprolol about 8 months for one bout of afib. I was prescribed 25mg twice daily. I took that for 2 days and my pulse was in the 40s so went down to once a day. It was still low 50s so I went to 12.5 and have been on that for most of the time. My resting pulse is mid 60s which is lower than it's been my whole life. I'm sensitive to most drugs and metoprolol I think is one of them. I'm having terrible back and hip pain to the point of it affecting how I walk. I've told my cardiologist and my pcp but they both say metoprolol isn't the cause especially at such a low dose. Tonight I started halving the 12.5 and will use that for a week and then stop. If after a few weeks if the pain goes away I'll know it was the drug and see what alternative drug is suggested by my cardiologist. Has anyone else had back and hip pain?