Salix Pharmaceuticals stock rose 5 percent last week despite news that the company received a warning letter from the Food and Drug Administration (FDA) urging the company to clarify information about its new orally dissolving heartburn treatment, Metozolv ODT, according to Local Tech Wire. The FDA said that some of the drug’s marketing materials are “false or misleading because they omit and minimize risk information, broaden the indication of Metozolv ODT, and contain unsubstantiated comparative and other claims.”
Salix received FDA approval for Metozolv last September, offering an alternative to the metoclopramide pill known by the brand name Reglan. Reglan received a black box warning from the FDA last year after long-term (12 weeks or more) use of Reglan was linked to a serious involuntary movement disorder known as Tardive Dyskinesia.
As another version of metoclopramide, Metozolv is also required to carry the same warning on its label and provide adequate warnings of the serious side effect in its marketing materials. By not doing so, the FDA said, “these violations are concerning from a public health perspective because they suggest that Metozolv ODT is safer and more effective than has been demonstrated by substantial evidence or substantial clinical experience, and encourage use in circumstance other than those for which the drug has been shown to be safe and effective.”
However, the warning did not affect the company’s stock, which rose $1.74 last week to close at $37.41. If Salix does not correct the violations, the company could face FDA regulatory action.