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Product Review

Toprol XL vs. Generic Metoprolol Succinate Extended-release (ER) Tablets Review Article

Choose the Best Blood Pressure Medication. Find Out Why Some Generic Blood Pressure Medications Are Not the Same as the Original & May Increase Blood Pressure or Have Other Disturbing Side Effects.

Toprol vs Generic Metoprolol

News Release

4/16/2008

FDA's investigation of generic antidepresssant called inadequate by ConsumerLab.com and The People's Pharmacy

WHITE PLAINS, NEW YORK AND DURHAM, NORTH CAROLINA — APRIL 16, 2008 — After waiting more than six months for results of the FDA's investigation of a generic version of Wellbutrin XL 300 (Budeprion XL 300), ConsumerLab.

Clinical Update

1/18/2014

Green Tea "Blocks" Beta-Blocker

A new study shows that drinking green tea can drastically reduce the amount of a beta-blocker (nadolol, Corgard) absorbed into the bloodstream. Beta-blockers are typically taken to lower blood pressure, raising concern for people using green tea along with this beta-blocker and, possibly, related medications. Get the details, along with our tests of green tea drinks and supplements, in the update to the Green Tea Review >>   

If you take a beta-blocker (which includes the popular drugs metoprolol (Lopressor, Toprol) and propranolol (Inderal)), be aware that chromium and CoQ10 may offer benefits.

Recalls & Warnings

1/30/2009

Generic Toprol XL (Metoprolol Succinate ER) Recalled Along with 60 Other Drugs

On January 28, 2009, ETHEX Corporation, a subsidiary of KV Pharmaceutical, announced a nationwide recall at the retail level of all strengths of Metoprolol Succinate ER tablets (25 mg, 50 mg, 100 mg and 200 mg).

Recalls & Warnings

12/26/2008

Generic Manufacturer Suspends Production of All Tablets -- Including Generic Metoprolol Succinate ER

On December 23, 2008, KV Pharmaceutical advised the FDA that it voluntarily suspended all shipments of all of its FDA approved drug products in tablet form, including Metoprolol Succinate ER 100 mg and 200 mg products. [See related ConsumerLab.com Drug Investigation of Metoprolol Succinate ER.

Recalls & Warnings

8/28/2008

FDA Finds Fault with Generic Toprol XL -- Problems Reported Earlier by ConsumerLab.com

On August 12, 2008, the U.S. FDA sent a letter to Sandoz Inc. warning of violations in its manufacture of Metoprolol Succinate ER tablets and other drug products. Sandoz's Metoprolol Succinate ER tablets are generic versions of Toprol XL.

Product Review

Berberine and Goldenseal Supplements Review

Choose the Best Berberine & Goldenseal Supplements. CL Tests Reveal Problems With 25% of Berberine and 67% of Goldenseal Supplements.

Berberine and goldenseal supplements reviewed by ConsumerLab.com

CL Answer

What is the best way to take melatonin to get a good night's sleep?

Learn more about the best way to take melatonin for better sleep. When to take it, how to take it, and general melatonin information.

Melatonin Supplements Reviewed by ConsumerLab.com

CL Answer

What are the best supplements or lifestyle modifications for insomnia, and which can make insomnia worse?

Find out which vitamins may help you sleep and learn if any vitamins or supplements can cause insomnia.

Recalls & Warnings

6/25/2014

More Generic Versions of Heart Medication Recalled

As reported in the New York Times on June 24, 2014, certain lots of the blood pressure medication metoprolol succinate extended-release have recently been recalled. The recalling manufacturers are the Indian companies Dr. Reddy's Laboratories and Wockhardt.

News Release

3/17/2008

As problems surface, Consumerlab.com and the people's pharmacy ask FDA to disclose differences between generic and original drugs

WHITE PLAINS, NEW YORK AND DURHAM, NORTH CAROLINA — MARCH 17, 2008 — An investigation by ConsumerLab.