What is more effective metoprolol, toprol-xl?

Equally effective. Toprol xl is the long acting formulation of metoprolol. So equal efficacy as long as dosing is equivalent. Metoprolpl is a twice a day drug and toprol is once daily.

Related Questions

Can't take toprol XL because the acid base bothers my bladder but regular metoprolol isn't controlling my high tachycardia well. Any other options?

Yes. There are several other b-blockers that can slow your heart down (coreg, bystolic) and there are also some calcium channel blockers that do the same (diltizem and verapamil). Ask your doctor if you can try one of these. Read more...