Hi, Metoprolol treats high blood pressure, angina, and heart failure. It is not known to directly cause infertility in women. However, some studies have suggested that beta-blockers, including metoprolol, may affect fertility in men by reducing sperm count and motility. Regarding weight gain, metoprolol can cause fluid retention and slow down metabolism, leading to weight gain. It is important to talk to your healthcare provider about any concerns you have regarding side effects of metoprolol, including weight gain. Your healthcare provider may recommend lifestyle modifications, such as diet and exercise, to help manage your weight. If you are concerned about your ability to conceive, you should speak with your healthcare provider. They may refer you to a fertility specialist who can help you understand your fertility status and discuss any potential treatment options. It is also important to note that high blood pressure can have negative effects on fertility and pregnancy, so it is important to manage your blood pressure with medication as directed by your healthcare provider. Take care. Hope I have answered your question. Let me know if I can assist you further. Regards, Dr. Priyanka, General & Family Physician