Metoprolol succinate er vs metoprolol tartrate

Metoprolol is the active ingredient being used to treat the condition.

Metoprolol succinate (Toprol XR) and Metoprolol Tartrate(lopressor) are 2 different dosage forms (forms of the medication).

M.Succinate is an extended-release medication and M.Tartrate is an immediate-release medication.

The only other difference I would be able to think of is that M.Tartrate, being an immediate release, would most likely require the patient to take additional pills throughout the day.
*This is due to metoprolol's short half life, which means the drug will be excreted from the body quickly since it's released immediately, and half life determines when to dose the drug once it's gone from the body. Shorter half life means taking more of the medication sooner than if it were an extended release.

With the extended release, the drug will stay slowly release over a longer period of time, so the patient probably wouldn't have to take more than one or two pills per day.

Most medications have these 2 options and then some because every patient varies with how they can take medication and it's helpful when dosing to know there are options.

Hope this helped :-D

My wife has a micro valve problem and is taking Metoprolol Succinate ER 50 Mg. She originally was taking the Metoprolol Tartrate 50 Mg. The pharmacy changed the drug. Is there a difference for her valve problem

new prescripption metoprolol suc 50 mg xr ta. my previous pills had 50 on the pill and it was a white round pill. this new prescription has 831 on the pill and it's thicker but it's white and round too. Is this the same med?
joan_57@yahoo.com

post quick answer

these are different medications succinate is used for CHF tartrate is not. This is a first-line therapy in the treatment of obstructive and nonobstructive hypertrophic cardiomyopathy (HCM). Rarely, patients may require up to 200 mg orally twice daily to achieve the desired effect. The dose is titrated to a heart rate of between 50 and 60 bpm.

I take metoprolol tartrate 50 mg three times a day for A. fib. I have been taking this drug for about 2 weeks since I came out of the hospital. I check WebMd for
for side effects and I have them. Headache, occ. hertburn, muscle aches, nausea. I also have been having panic attacks because, I think, I don't want to have to go through what I went through that put me in the hospital. My echo was normal and so was my persatin stree test. Right now I'm on an event monitor for ten days. I don't have an appt. with my cardiologist until 8/10. Now what?

I'm not sure where i go from here

You state the "pharmacy" changed her Rx. No, only the prescibers office can do that. Metoprolol comes in 2 diff dosage forms and it is VERY important to maintain the same dosage form (immedicate release vs. extended release).
If this was a refill, then this is considered a "misfill".
Lyn, RPh
New Mexico

The shape of my metoprolol changed too. The pharmacy assured me it was the same thing.