The Dangers of Pradaxa (Dabigatran): Part 1 of 3: Side Effects and Complications

By Independent Staff Writer

The newest drug approved for use in the treatment of heart valve problems or atrial fibrillation among patients with an increased risk of stroke is the drug Pradaxa, manufactured by Boehringer Ingelheim. The drug Boehringer is seeking to replace with its newest arrival is Warfarin—a blood-thinning drug which has been used since the early 1950’s. Boehringer claims that Pradaxa is over 30% better in decreasing the risk of a serious stroke than Warfarin. The FDA initially agreed with Boehringer, granting FDA approval of Pradaxa in October of 2010.

What is Atrial Fibrillation and How Does Pradaxa Help?
Atrial fibrillation affects over two million Americans and involves excessively rapid, uncoordinated contractions of the upper two chambers of the heart. Those with atrial fibrillation are at a much higher risk of developing blood clots which in turn can lead to a disabling stroke should the clot travel to the brain. Pradaxa works by inhibiting thrombin, an enzyme in the blood which controls blood clotting.

Pradaxa (Dabigatran) and the FDA Safety Review

By Independent Staff Writer


Although only on the market for a relatively short period of time, Pradaxa, the blood-thinning drug manufactured by Boehringer Ingelheim—has already suffered under the weight of threatened recalls, lawsuits and warnings by the FDA. Pradaxa is the first FDA-approved drug of its type since the drug Warfarin was approved in 1954. Both Warfarin and Pradaxa are commonly prescribed as blood thinners to reduce the risk of stroke in patients with heart rhythm irregularities. 

Warfarin was used almost exclusively until November of 2005 when Boehringer Ingelheim sponsored a clinical trial to determine the long-term safety and effectiveness of their “new kid on the block,” Pradaxa. The Pradaxa blood-thinning drug trial concluded in March of 2009 to rave reviews. More than 18,000 patients were enrolled in the trial across 44 countries. Boehringer announced that Pradaxa was able to significantly reduce the risk of stroke when compared to the older established drug, Warfarin, and that it had similar or even reduced risks of causing major bleeding in the body—depending on the dosage.