(LONDON) Press Release MHRA Statement Report: Oral #COVID19 antiviral, Paxlovid, approved by UK regulator #AceHealthDesk report

#CoronavirusNewsDesk says this new combination treatment is for people with mild to moderate #COVID19 who are at high risk of developing severe #COVID19 This follows a rigorous review of its safety, quality and effectiveness by the UK regulator and expert advice from the government’s independent scientific advisory body, the Commission on Human Medicines according to

Developed by Pfizer, Paxlovid is an antiviral medicine with a combination of active ingredients, PF-07321332 and ritonavir, that works by inhibiting a protease required for virus replication. This prevents it from multiplying, keeping virus levels low and helping the body to overcome the viral infection. Ritonavir slows the breakdown of the second ingredient PF-07321332 in the body, thereby increasing its effectiveness.

The two active substances of Paxlovid come as separate tablets that are packaged together and taken together, twice a day by mouth for 5 days. PF-07321332 is a new antiviral, meaning that it has not been approved for use before. However, ritonavir has been used alongside some HIV medicines for many years to ‘boost’ their activity, which is similar to what it is doing for PF-07321332.

In a clinical trial in high-risk adults with symptomatic COVID-19 infection, a five day treatment course of Paxlovid reduced the risk of COVID-19 related hospitalisation and death within 28 days by 89% when compared to a placebo group when treatment was started within 3 days of the onset of COVID-19 symptoms. The number of hospitalisations and deaths were 0.8% (3 out of 389) in the Paxlovid group compared with 7% (27 out of 385) in the placebo group. Similar favourable results were seen in patients when treatment was started within 5 days of the start of symptoms.

Based on the clinical trial data, Paxlovid is most effective when taken during the early stages of infection and so the MHRA recommends its use as soon as possible and within five days of the start of symptoms. It has been authorised for use in people aged 18 and above who have mild to moderate COVID-19 infection and at least one risk factor for developing severe illness. Such risk factors include obesity, older age (>60 years), diabetes mellitus, or heart disease.

It is too early to know whether the omicron variant has any impact on Paxlovid’s effectiveness but the MHRA is proactively working with the company to establish this.

Dr June Raine, MHRA Chief Executive, said:

“Today we have given our regulatory approval for Paxlovid, a COVID-19 treatment found to cut COVID-19 related hospitalisations and deaths by 89% when taken within three days of the start of symptoms.

“We now have a further antiviral medicine for the treatment of COVID-19 that can be taken by mouth rather than administered intravenously. This means it can be administered outside a hospital setting, before COVID-19 has progressed to a severe stage.

“I hope the announcement today gives reassurance to those particularly vulnerable to COVID-19, for whom this treatment has been approved. For these individuals, this treatment could be life-saving.”

Professor Sir Munir Pirmohamed, Chair of the Commission on Human Medicines, said:

“The Commission on Human Medicines and its COVID-19 Therapeutics Expert Working Group has independently reviewed the data and endorses the MHRA’s regulatory approval of Paxlovid.

“Based on this data, it is clear Paxlovid is another safe and effective treatment to help us in our fight against COVID-19. As it is deployed, we will monitor its effectiveness and safety in the real-world, including any drug interactions, as we do with all medicines. Any side effects should be reported to the MHRA using the Yellow Card scheme.”

Health and Social Care Secretary Sajid Javid, said:

“The UK has been a world leader at finding and rolling out COVID-19 treatments to patients. This is further proved by the MHRA being one of the first in the world to approve this life-saving antiviral.

“We are also leading the whole of Europe in the number of antivirals we’ve bought per person – with over 2.75 million courses of this antiviral secured for NHS patients by the Antivirals Taskforce.

“The booster campaign, testing and antiviral defences ensure our country is in the strongest possible position to deal with the threat posed by Omicron as we head into the new year.”

Paxlovid may interact with certain other medications. Before it is prescribed, the MHRA is therefore advising that patients’ current medications should be carefully reviewed, and appropriate advice given on adjustments that may be needed to their current medications. Additional tests may also be needed for its safe use. More information is provided in the patient information leaflet.

Paxlovid is not a substitute for vaccination against COVID-19. Vaccination and having a booster after the first course remains the best way to avoid hospitalisation due to COVID-19 for most people. The government and the NHS will confirm how this COVID-19 treatment will be given to patients in due course.

Additional Notes:

  • The Medicines and Healthcare products Regulatory Agencyis responsible for protecting and improving the health of millions of people every day through the effective regulation of all medicines and medical devices in the UK by ensuring they work and are acceptably safe. All our work is underpinned by robust and fact-based judgements to ensure that the benefits justify any risks.
  • The MHRA is a centre of the Medicines and Healthcare products Regulatory Agency which also includes theNational Institute for Biological Standards and Control (NIBSC)and theClinical Practice Research Datalink (CPRD). MHRA is an executive agency of theDepartment of Health and Social Care.
  • TheCommission on Human Medicines (CHM) advises ministers on the safety, efficacy and quality of medicinal products. The CHM is an advisory non-departmental public body, sponsored by the Department of Health and Social Care.
  • The MHRA’s Conditional Marketing Authorisation for Paxlovid is valid in Great Britain only. An emergency use authorisation has been granted for Northern Ireland to ensure access across the whole of the United Kingdom. Both authorisations were made on the basis of the same rigorous evaluation.
  • More information can be found in the product information

#AceHealthDesk report …………Published: Jan.01: 2022:

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