13 Things To Know About Paxlovid, the Latest COVID-19 Pill — Eat This Not That


Paxlovid is the latest COVID-19 pill to hit the market, and it has been making waves in the medical community. This pill is designed to help reduce the severity of symptoms associated with the virus, and it has been shown to be effective in clinical trials. In this article, we will discuss 13 things to know about Paxlovid, including its effectiveness, side effects, and more. We will also provide some tips on how to make sure you get the most out of this pill. So, if you’re looking for more information on Paxlovid, read on to learn more!

13 Things To Know About Paxlovid, the Latest COVID-19 Pill

Paxlovid is the latest COVID-19 pill to hit the market, and it’s been making waves in the medical community. Here are 13 things to know about this new drug.

1. What is Paxlovid?

Paxlovid is a new antiviral drug developed by the pharmaceutical company Gilead Sciences. It is designed to treat patients with mild to moderate COVID-19 symptoms. It is taken orally and is available in both tablet and capsule form.

2. How Does Paxlovid Work?

Paxlovid works by blocking the virus from entering and replicating in the body’s cells. It does this by targeting the virus’s main protein, called the spike protein. By blocking the spike protein, the virus is unable to enter the cells and replicate, thus reducing the severity of the symptoms.

3. What are the Benefits of Paxlovid?

Paxlovid has been shown to reduce the severity of COVID-19 symptoms in patients. It can also reduce the amount of time it takes for patients to recover from the virus. Additionally, it has been shown to reduce the risk of hospitalization and death in patients with severe COVID-19 symptoms.

4. What are the Side Effects of Paxlovid?

The most common side effects of Paxlovid are nausea, vomiting, diarrhea, and headache. Other side effects may include dizziness, fatigue, and rash. If you experience any of these side effects, contact your doctor immediately.

5. Who Should Take Paxlovid?

Paxlovid is approved for use in adults and children over the age of 12 who have mild to moderate COVID-19 symptoms. It is not recommended for use in pregnant women or those with severe COVID-19 symptoms.

6. How Much Does Paxlovid Cost?

The cost of Paxlovid varies depending on the pharmacy and insurance coverage. Generally, it costs around $200 for a 30-day supply.

7. Is Paxlovid Safe?

Paxlovid has been tested extensively and is considered safe for use in adults and children over the age of 12. However, it is important to talk to your doctor before taking any medication.

8. How Long Does Paxlovid Take to Work?

Paxlovid typically takes about two weeks to start working. However, it may take longer for some patients to see results.

9. What Should I Do if I Miss a Dose of Paxlovid?

If you miss a dose of Paxlovid, take it as soon as you remember. However, if it is almost time for your next dose, skip the missed dose and take your next dose at the regular time.

10. What Should I Avoid While Taking Paxlovid?

You should avoid drinking alcohol while taking Paxlovid. Additionally, you should avoid taking any other medications without first consulting your doctor.

11. Is Paxlovid Available Over the Counter?

No, Paxlovid is not available over the counter. It is only available with a prescription from your doctor.

12. What Should I Tell My Doctor Before Taking Paxlovid?

Before taking Paxlovid, tell your doctor if you have any allergies, are pregnant or breastfeeding, or are taking any other medications. Additionally, tell your doctor if you have any other medical conditions.

13. What Should I Eat While Taking Paxlovid?

It is important to eat a healthy, balanced diet while taking Paxlovid. This includes plenty of fruits, vegetables, whole grains, and lean proteins. Avoid processed foods, sugary drinks, and unhealthy fats.

Paxlovid is the latest COVID-19 treatment that’s been all over the news. The drug was granted an emergency use authorization (EUA) by the Food and Drug Administration (FDA) in December for anyone ages 12 and older who weighs at least 88 pounds, and is at high risk for severe disease. Pfizer recently began Phase 2 and 3 trials in children and teens ages 6 to 17. Paxlovid is an oral antiviral pill that can be taken at home to help keep high-risk patients from getting so sick that they need to be hospitalized. So, if you test positive for the coronavirus and a health care provider writes you a prescription, you can take pills at home and lower your risk of going to the hospital. The drug, developed by Pfizer, has a lot of positives: It had an 89% reduction in the risk of hospitalization and death in the clinical trial that supported the EUA, a number that was high enough to prompt the National Institutes of Health (NIH) to prioritize it over other COVID-19 treatments; it’s cheaper than many other COVID-19 drugs (it’s provided for free by the U.S. government while there is a public health emergency); and, perhaps most reassuring, it is expected to work against the Omicron variant. “I think it is the beginning of a ‘game-changer,’” says Scott Roberts, MD, a Yale Medicine infectious diseases specialist. “It’s really our first efficacious oral antiviral pill for this virus. It shows clear benefit, and it really can prevent hospitalization and death in people who are at high risk.”It’s important to note that Paxlovid (the brand name for the drug, which is made up of two generic medications—nirmatrelvir and ritonavir) isn’t the only pill available to treat COVID-19. The FDA also granted an EUA in December to a pill from Merck called molnupiravir (Lagevrio), but some studies suggest that molnupiravir has only a 30% reduction in the risk for hospitalization and death from COVID-19. And as far as convenience, this medication is considered an improvement over treatments like remdesivir (approved by the FDA in October 2020), which is administered by intravenous (IV) injection. We asked Yale Medicine infectious diseases experts common questions about Paxlovid. Below are their responses. Read on to find out more—and to ensure your health and the health of others, don’t miss these Sure Signs You’ve Already Had COVID.

Paxlovid pills

Paxlovid is an antiviral therapy that consists of two separate medications packaged together. When you take your three-pill dose, two of those pills will be nirmatrelvir, the drug that inhibits the SARS-CoV-2 protein from replicating. The other is ritonavir, a drug that was once used to treat HIV/AIDS but is now used to boost levels of antiviral medicines. As a COVID-19 treatment, ritonavir essentially shuts down nirmatrelvir’s metabolism in the liver, so that it doesn’t move out of your body as quickly, which means it can work longer—giving it a boost to help fight the infection.

Woman coughing hardly at home

You have to take Paxlovid within five days of developing symptoms. Like all antivirals, Paxlovid works best early in the course of an illness—in this case, within the first five days of symptom onset, says Jeffrey Topal, MD, a Yale Medicine infectious diseases specialist who is involved in determining COVID-19 treatment protocols for Yale New Haven Hospital patients. “Once you’ve been ill with the virus for more than a week, the damage done to the body in a severe case can’t be undone by the antiviral,” he says.

Closeup of medical worker or pharmacist hands wearing blue latex protective gloves,pouring white medicine pills on palm of hand.

You take three Paxlovid pills twice daily for five days for a full course that adds up to 30 pills. It helps that the pills are packaged in a “dose card,” basically a medication blister pack that allows you to punch out the pills as needed.

Close up image with a Tamiflu capsule (oseltamivir) on a blister pack, an antiviral medication.

“I think it’s a good comparison,” says Dr. Roberts. Tamiflu is an antiviral drug that reduces flu symptoms. Both are prescription-only oral antiviral pills given early in illness. Tamiflu is taken twice a day for five days, and it must be started within 48 hours of flu onset. “When you give a patient Tamiflu beyond that, it doesn’t really change the course of their flu,” Dr. Roberts says. But there are also differences between the two, starting with the way they were studied, Dr. Topal adds. Researchers showed that Paxlovid can prevent hospitalization and death. But since influenza causes fewer severe cases, clinical trials focused on whether Tamiflu could shorten the length of flu illness—which it did, he says.

physician medicine doctor or pharmacist sitting at worktable, holding jar of pills in hands and writing prescription on special form.

The FDA authorized Paxlovid for people ages 12 and older who weigh at least 88 pounds. But in order to qualify for a prescription, you must also have had a positive COVID-19 test result and be at high risk for developing severe COVID-19. That means you must either have certain underlying conditions (including cancer, diabetes, obesity, or others) or be 65 or older (more than 81% of COVID-19 deaths occur in this group). The more underlying medical conditions a person has, the higher their risk for developing a severe case of COVID-19, according to the CDC. The hope is that the restrictions on who can take Paxlovid will be relaxed over time. The FDA granted the EUA in December, just as a staggering number of people were infected with Omicron and the need for care skyrocketed, leading to supply issues.

Portrait of nurse and man with face masks

When it applied for FDA authorization, Pfizer presented data from a clinical trial conducted between mid-July and early December in 2021. The data showed that participants (all of whom were unvaccinated) who were given Paxlovid were 89% less likely to develop severe illness and death compared to trial participants who received a placebo. (While the recommendation is to take Paxlovid within five days of symptom onset, participants in the clinical trial took the drug within three days.) Scientists will continue to study the drug’s effectiveness as it is used to treat patients in the real world.

Nurse with thermometer measures fever on patient child in hospital bed, wearing protective visor and surgical mask.

Pfizer launched a clinical trial in March to study the safety and efficacy of Paxlovid in children and teenagers ages 6 to 17 who have COVID-19 symptoms and test positive for the virus, and who are neither hospitalized nor at risk for severe disease. While Paxlovid is authorized for use in adolescents and teenagers ages 12 and up, and weighing at least 88 pounds, that age group wasn’t tested in the original clinical trial. But because many children reach 88 pounds—considered to be an adult weight—the FDA has allowed extensions of EUAs for medications such as monoclonal antibodies and remdesivir in younger age groups, adds Dr. Topal. “Based on the pharmacokinetics of the drugs in Paxlovid, the differences in metabolism and excretion—liver and kidney function specifically—of these drugs in this age group are thought to be similar to that of adults,” Dr. Topal says.

Doctor with blood sample of Covid-19 Omicron B.1.1.529 Variant and general data of covid-19 Coronavirus Mutations.

Paxlovid’s clinical trials took place before Omicron became predominant, but Pfizer says the drug works against the highly contagious variant. Three laboratory-based studies claim to back this up—two of those studies were conducted by Pfizer, while the third was done by Pfizer in partnership with the Icahn School of Medicine at Mount Sinai. These studies have not yet been published in peer-reviewed medical journals.

girl with a spoon near a mouth

Most people who take Paxlovid should not experience serious side effects, explains Dr. Roberts. “Paxlovid is usually very well-tolerated,” he says. Common side effects, which are usually mild, include:

  • Altered or impaired sense of taste
  • Diarrhea
  • Increased blood pressure
  • Muscle aches

Since Paxlovid is cleared by the kidneys, dose adjustments may be required for patients with mild-to-moderate kidney disease, explains Dr. Topal. “For patients with severe kidney disease—or who are on dialysis—or those with severe liver disease, Paxlovid is not recommended; the levels of the drug can become too high and could cause increased side effects,” he says. It’s worth noting that Paxlovid is still being studied, so it is possible that all of the risks are not yet known. (The FDA has provided a fact sheet on Paxlovid with a full list of known side effects.)

man with prescription medications

There is a long list of medications Paxlovid may interact with, and in some cases, doctors may not prescribe Paxlovid because these interactions may cause serious complications. The list of drugs that Paxlovid interacts with includes some organ anti-rejection drugs that transplant patients take, as well as more common drugs like some used to treat heart arrhythmias. Paxlovid also decreases the metabolism of anticoagulants, or blood thinners, that many older adults depend on, driving up levels of those medications in the body to a point where they are unsafe, Dr. Topal explains. It also interacts with cholesterol-lowering medications like Lipitor, but that’s less challenging for patients to overcome. “If you stop taking your Lipitor for five days, nothing bad is going to happen,” he adds. If you are pregnant or breastfeeding, the FDA recommends discussing your options and specific situation with your health care provider, since there is no experience using the drug in these populations. If you could become pregnant, it’s recommended that you use effective barrier contraception or do not have sexual activity while taking Paxlovid.

Close-up of young man getting PCR test at doctor's office during coronavirus epidemic.

There have been reports of a “rebound” of COVID-19 symptoms in some people who have completed the five-day course of Paxlovid; in those cases, symptoms have recurred four or five days after completing the treatment. Some have also reported having a positive COVID-19 test after being treated with the drug. Pfizer had said that in the clinical trial for Paxlovid, several participants appeared to have a rebound in virus levels “around day 10 or day 14,” although this also occurred in some people who were given a placebo.  “This is being closely investigated and we should have more guidance soon,” says Dr. Roberts. “The hypothesis is that the immune system didn’t have a chance to see the full extent of the virus, since Paxlovid suppressed replication early in disease,” he says. There is currently no evidence to support a second course of Paxlovid in these situations, but scientists are studying the effects of longer treatment durations, longer periods of isolation, and other ways of managing the problem, he adds. For anyone who experiences a rebound, Pfizer recommends reporting it to them on its portal for adverse events associated with Paxlovid.

Female doctor consults mature patient during the quarantine for coronavirus.

There are other therapies for COVID-19, and anyone who cannot take Paxlovid—perhaps because it would interact with another medication—should talk to their doctor about the best approach for their situation.

Nurse with face mask sitting at home with senior woman and injecting covid 19 vaccine.

Vaccination remains a key part of prevention, even as more drugs become available, says Dr. Topal. He pictures prevention as an upside-down pyramid. Vaccination, mitigation efforts, such as masking, and testing would be at the base—and medications at the top point.”Early testing is key to making these drugs  work,” he says. “It’s always been the Achilles’ heel of these antiviral drugs that most people don’t get tested—or they don’t have access to testing.”He encourages taking a test even if you think you only have a cold or allergies—and if you can get one. “Home testing is a huge part of the way to really ‘operationalize’ these medications,” he says, adding that while home tests may not be as highly sensitive as the laboratory-based polymerase chain reaction (PCR) tests, they are still very helpful in making a diagnosis.Dr. Topal says people also should remember that Paxlovid, even with its high efficacy, is not perfect, and even if it were, viruses can mutate and develop resistance to antiviral medications. “Will some people still be hospitalized? Yes—no medication is perfect,” he says. “But for many high-risk patients, this medication can really reduce that risk.”If you are experiencing symptoms of COVID-19 and think you are eligible for a treatment, you can visit the government Test-to-Treat Locater. You can use the site to search for the places near you where you can fill a COVID-19 prescription, or identify sites that provide testing, medical care, and COVID-19 medications.

This article has been published in Yale Medicine.