Metoprolol succinate vs metoprolol tartrate

Common Questions and Answers about Metoprolol succinate vs metoprolol tartrate

toprol

Following are my observations on day two of substituting Atenolol 25 mg twice a day for Metoprolol 25 mg twice a day.. both are regular, for Metoprolol it is called Tartrate, I think the Atenolol comes in only one normally longer lasting form. Today in the early afternoon, following my third 25 mg dose of Atenolol at about 9 AM, I noticed some dizziness when I rose from a time sitting.
Because of the recent shortage of metoprolol succinate, my general practitioner refilled my prescription as metoprolol tartrate, but without informing me of the change. I was previously taking 25 mg in the am and 12.5 mg in the evening of the generic Toprol XL. Now I am taking 25 mg in the morning of generic Lopressor, and another 25 in the evening, but less than a full 12 hours apart. For example I will take the 25mg at 7 am, another 12.5 at 2pm and another 12.5 at around 6 or so.
Unfortunately the refill arrived as 50MG Metoprolol Tartrate. Now as I understand it, the difference between the two is Metoprolol Succinate is Extended Release and Metoprolol Tartrate is Immediate Release...is this a big deal? Not sure if this was planned or an oversight.
MedHelp Health Answers