US adds Merck pill as 2nd easy-to-use drug against COVID-19

WASHINGTON (AP) — U.S. health regulators on Thursday authorized the second pill against COVID-19, providing another easy-to-use medication to battle the rising tide of omicron infections.

The Food and Drug Administration authorization of Merck's molnupiravir comes one day after the agency cleared a competing drug from Pfizer.

Pfizer's pill, Paxlovid, is likely to become the first-choice treatment against the virus, thanks to its superior benefits and milder side effects.

As a result, Merck's pill is expected to have a smaller role against the pandemic than predicted just a few weeks ago. Its ability to head off severe COVID-19 is much smaller than initially announced and the drug label will warn of serious safety issues, including the potential for birth defects.

Both treatments will be free to patients in the U.S. after being purchased by the federal government.

The Food and Drug Administration authorized Merck’s drug for adults with early symptoms of COVID-19 who face the highest risks of hospitalization, including older people and those with conditions like obesity and heart disease. The U.K. first authorized the pill in early November.

The Merck drug will carry a warning against use during pregnancy. Women of childbearing age should use birth control during treatment and for a few days after while men should use birth control for at least three months after their final dose, the FDA said. The federal agency also said molnupiravir should not be used in patients under age 18 because it may affect bone and cartilage growth.

Dr. Nick Kartsonis, Merck's senior vice president of clinical research, said the company's scientists are still studying the drug and they hope to eventually get it approved for use in children.

The restrictions were expected after an FDA...