Morphine Sulfate Sr Vs. Morphine Sulfate Er

I am prescribed Morphine Sulfate 30mg ER. My pharmacy gave me Morphine Sulfate 30mg SR. I only know because the medication is a different color and I had to research it when my pain became unbearable. I thought they gave me the wrong medication. Is there a difference between SR and ER? Or could the pain be due to the medication being from a different manufacturer than I usually receive?

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SR and ER are both just abbreviations that mean the same thing, they denote it as being a time released formulation of Morphine.

Learn more Morphine details here.

And yes, the pain may be just due to slight fluctuations in the amount of the active ingredient from one manufacturer to the next.

Does it list the name of the manufacturer on them? Or can you post back with the markings?

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