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New Heart Failure Drug Entresto Flagged For Hypotension Side Effect

December 4, 2017 By Law Offices of Thomas J. Lamb, P.A.

The November 1, 2017 edition of ISMP QuarterWatch, a publication from the Institute for Safe Medication Practices, reports that a so-called “drug safety signal” has been detected recently for Entresto as regards hypotension being a serious side effect which warrants more attention — and, perhaps, and an increased warning.

Relying upon “New data from 2017 Q1” of the U.S. Food and Drug Administration (FDA) Adverse Event Reporting System (FAERS), this leading drug safety publication ends its recent report on Entresto with these statements in the final Conclusions section:

This large volume of reports of hypotension confirms the concerns of FDA reviewers that the [Entresto (valsartan-sacubitril)] clinical trial results in carefully selected patients underestimated the risk of hypotension in normal clinical practice. As we noted, the risk is so prominent that about 1 out of 4 patients started on [Entresto] will experience a hypotension-related event.

We recommend that the FDA and [Novartis Pharmaceuticals Corporation] the manufacturer [of Entresto] more clearly communicate the full risk of hypotension, including appropriate steps for monitoring patients, and examine whether a more gradual escalation of dose to the recommended level would reduce the risk.

This new Entresto drug safety issue is presented in the Executive Summary part of this November 2017 ISMP QuarterWatch publication as follows:

[T]he signal investigated for this report suggested that many patients starting on this new drug [Entresto] were experiencing hypotension (low blood pressure), and the reported complications ranged from dizziness to blackouts and other consequences serious enough to require hospitalization. We identified 1,684 adverse event reports indicating a hypotension-related event, more than for any other cardiovascular drug we monitored over the 12 months ending in 2017 Q1. They occurred in older patients (median age 70 years), and although there were 69 reported deaths, in two-thirds of the cases, the health consequences were not severe.Further investigation showed this adverse event was known, but likely underestimated in the single large clinical trial that supported [Entresto’s] FDA approval. In that study, 24.4% of carefully selected patients experienced a hypotension-related adverse event. But FDA reviewers noted this was likely an underestimate because this enriched trial was conducted only with patients already known to tolerate the study drugs without experiencing adverse events severe enough to cause discontinuation.

We will be watching the see whether the FDA takes any regulatory actions concerning Entresto or whether Novartis requests permission from the FDA to make a label change strengthening the warning about the apparent increased risk of this hypotension Entresto side effect.

[Read article in full at original source]

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