They are supplied in bottles of 30, 60, 100, 500 and unit dose packages of 100 (10x10). Description: Metoprolol Succinate Extended-Release Tablets, USP 25 mg, Rx Only, 100 Tablets per bottle, Manufactured by: Alkem Laboratories Ltd., Mumbai - 400 013, India, Distributed by: Ascend Laboratories, LLC, Parsippany NJ 07054, NDC 67877-590-01. Metoprolol succinate extended-release tablets USP, 200 mg are white to off-white, oval shaped film-coated tablets, debossed with M and 4 separated by breakline on one side and plain on other side.