Metoprolol Succinate ER Pound Weight Gain, Metoprolol, Juices, Metabolism, Soda

Has anyone experienced weight gain after being on Metoprolol? I have always fluctuated with my weight a bit. But this is the heaviest I have ever been without being pregnant. After having my last child I hovered between 160-175lbs.
A few months before being put on Metoprolol I had lost a bit of weight due to stress and got down to about 145lbs. Within less than 2 yrs I am up to 215 lbs. I don't eat as much as one would think I do. I don't drink soda or juices. What I eat is probably less than I did when I maintained 160-175lbs.
Anyone else dealing with weight gain after the Metoprolol? I had one Dr tell me that it can be a contributing factor because the Metoprolol slows down your metabolism and another Doctor told me that a few pound weight gain is sometimes expected but not this excessive.