Metoprolol - I have been taking metoprolol for at least 5 yrs. but it no longer seems to work?

There are certainly other drugs. Many people find it takes more than one drug to keep their high blood pressure under control-some may have to take 3 or more medications in the more stubborn cases. Have they tried adding a diuretic (waterpill) to your regimen? You might be able to go back to the lower dose along with a diuretic. The weight gain could have contributed to your increasing numbers, even losing 10% body weight can have a profound effect on decreasing your blood pressure. I would advise you to check and record your B/P reading over these next 4 days and take the readings to your doc. Take it first thing in the morning, in afternoon and then in evening or anytime you feel weird (dizziness, headaches, etc). Also be sure to mention how you feel. It is likely you will need a change in your regimen. Be sure to avoid high sodium (salt) foods in your diet-read labels-some foods are surprising sources of sodium (soft drinks/sodas for instance-even though they are sweet some are high in sodium, some cereals have high sodium content). Google DASH diet for help in getting a diet to help with high blood pressure.