Recent testing has shown that Zantac may be contaminated with unsafe levels of the cancer-causing chemical NDMA. Some scientific evidence suggests that the ranitidine molecules in Zantac may decompose into NDMA while in storage or inside the human body after ingestion.
There are heartburn drugs—both over-the-counter and prescription—associated with an increased risk of dangerous, sometimes life-threatening, kidney problems. They include well-known brand names such as Prevacid®, Nexium®, and Prilosec®.
In late 2014, the manufacturer admitted Zostavax could cause shingles, and added that warning to its label. Patients who have contracted shingles or experienced other serious side effects after receiving Zostavax have filed suit seeking compensation
Provigil and Nuvigil are approved to treat excessive sleepiness. The manufacturer and European & Canadian authorities warned that data suggests children born to women who took Provigil or Nuvigil while pregnant are 5 times more likely to have certain birth defects.
The FDA approved the weight-loss drug Belviq (lorcaserin) for sale in 2012. FDA analysis of the data collected in a five-year post-marketing study found a higher incidence of cancer in participants who took Belviq than those in the control group.