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Michal (Anonymous, 89.64.1.) Warszawa 2 years ago

Is the character of Quetiapine XR the same as the character SR?

Good morning On the Internet I found preparations of Kventiax-SR quetiapine and Quetaplex XR And I have a question: Is the form of quetiapine XR the same as the form of SR? Best regards

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Małgorzata Bekier Pharmacist

2 years ago

The SR and XR designations are synonymous with each other. The SR footnote from English Sustained Release/Slow Release means sustained release/slow release, while footnote XR - from English XR - eXtended Release - extended release. In the product characteristics of both preparations (Kventiax SR and Kwetaplex XR), manufacturers inform that the maximum concentration of quetiapine in plasma is reached after approx. 6 hours.

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