December 24, 2021
2 mins read

Second Covid pill cleared by US Govt

The decision to grant an emergency use authorization came a day after the agency gave a green light to a similar but more effective pill developed by Pfizer….reports Asian lite News

The US Food and Drug Administration (FDA) on Thursday authorized Merck’s Covid pill for high risk adults amid a winter surge of cases driven by the highly infectious Omicron variant.

The decision to grant an emergency use authorization came a day after the agency gave a green light to a similar but more effective pill developed by Pfizer.

“Today’s authorization provides an additional treatment option against the Covid-19 virus in the form of a pill that can be taken orally,” said FDA scientist Patrizia Cavazzoni.

The pill developed by Merck, which is known as MSD outside the US and Canada, is taken within five days of symptom onset and was shown in a trial of 1,400 participants to reduce Covid hospitalizations and deaths by 30 percent among at-risk people.

Pfizer’s pill reduced the same outcomes by almost 90 percent.

While vaccines and boosters remain the foremost tools in the fight against the virus, experts have welcomed the addition of new oral treatments, which should eventually be easy to access at pharmacies following a prescription.

Until now, the main treatments have been synthetic antibodies or Gilead’s antiviral remdesivir, which are administered by infusion.

Because neither Pfizer nor Merck’s treatments target the ever-mutating spike protein that dots the surface of the virus, they should be more able to withstand new variants, such as Omicron.

Both companies have said early lab testing has borne out this hypothesis.

While both treatments were found to be generally safe in clinical trials, more potential concerns have been raised about Merck’s pill, called molnupiravir.

The FDA has not authorized Merck’s pill for people under 18 because it may affect bone and cartilage growth.

It is not recommended for use in pregnant women because of the potential fetal harm which was identified in animal testing, but doctors can still decide if the benefits outweigh the risks in individual cases.

Independent experts convened by the FDA narrowly voted in favor of authorizing molnupiravir in early December. Several who voted “no” highlighted the potential risks.

Preliminary data about its efficacy was more encouraging, suggesting a 50 percent reduction in severe Covid, but this was later downgraded to 30 percent after the final analysis included more cases.

The FDA did not convene a panel of experts to discuss Pfizer’s pill, instead opting to authorize it without seeking their advice.

Eight capsules of molnupiravir are taken orally for five days, for a total of 40 capsules.

The US has paid for 3.1 million courses of Merck’s treatment, for about $2.2 billion, and 10 million courses of Pfizer’s for $5.3 billion.

Molnupiravir works by incorporating itself into the genome of the virus, causing mutations that prevent viral replication.

The drug has previously been authorized in Britain and Denmark.

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