developing a COVID-19 plan if you test positive to COVID-19. Learn more about oral antiviral treatments for COVID-19. Older Australians and First Nations people. If you test positive for COVID-19, you may be eligible for antiviral treatments if you are: 70 years of age or older, regardless of risk factors and with or without symptoms.If you have a Medicare card, and are eligible, the Pharmaceutical Benefits Scheme PBS subsidises the cost of oral antiviral COVID-19 medication. From 1 January 2023 the maximum that a pharmacy can charge per oral medication is: $7.30 for concession cardholders. State and territory hospitals can provide the oral antivirals if you are advised to ...Feb 28, 2022 · Collection of documents relating to COVID-19 treatments. The NHS is offering new antibody and antiviral treatments to people with coronavirus (COVID-19) who are at highest risk of becoming ... This drug has further been demonstrated to exert antiviral activity against Zika virus (ZIKV) in in vitro screening assays , but failed to offer protection in ZIKV-infected mice . Recently, Caly et al. reported on the antiviral activity of ivermectin against SARS-CoV-2, the causative agent of COVID-19 . These authors demonstrated that a single ...The treatments available for people at the highest risk of becoming seriously ill from COVID-19 are: Nirmatrelvir plus ritonavir, remdesivir and molnupiravir are antiviral medicines. Sotrovimab is known as a neutralising monoclonal antibody (nMAb). Sotrovimab is recommended if nirmatrelvir plus ritonavir (Paxlovid) is not suitable. Pfizer’s oral antiviral drug (a combination of nirmatrelvir and ritonavir tablets) is strongly recommended for patients with non-severe COVID-19 who are at highest risk of developing severe disease and hospitalization, such as unvaccinated, older, or immunosuppressed patients.COVID-19 convalescent plasma with high titers of anti-SARS-CoV-2 antibodies is authorized for the treatment of COVID-19 in patients with immunosuppressive disease or receiving immunosuppressive ...Apr 19, 2022 · 19 Apr 2022 06:56PM (Updated: 19 Apr 2022 07:32PM) SINGAPORE: The antiviral drug molnupravir will be the second oral medicine approved in Singapore for the treatment of adult COVID-19 patients ... May 26, 2023 · There are two antiviral medications that have been issued Emergency Use Authorization (EUA) by the U.S. FDA: Pfizer’s Paxlovid and Merck’s molnupiravir. Both treatments are in limited supply, and a prescription does not guarantee the medication will be available. Treatment should be initiated as soon as possible after diagnosis of COVID-19 ... Today, the FDA issued an emergency use authorization for the first oral antiviral for treatment of COVID-19 in adults and pediatric patients (12 years of age and older weighing at least 40 ...There are two oral antiviral therapies currently available to treat Covid-19 in the United States. One, called Paxlovid, was developed by Pfizer and was the first oral treatment authorized for ...These sections summarize the data on antiviral agents, including remdesivir, ritonavir-boosted nirmatrelvir, and anti-SARS-CoV-2 monoclonal antibodies. Antivirals, Including Antibody Products | COVID-19 Treatment Guidelines Oct 5, 2020 · President Trump's COVID-19 Treatment Includes These Drugs. October 05, 2020 6:13 PM. Steve Baragona. FILE - Vials of the drug remdesivir are seen at a hospital in Germany, April 8, 2020. The list ... Jul 21, 2023 · for the treatment of COVID-19. Summary Recommendations Recommendations for Treating Nonhospitalized Adults • The COVID-19 Treatment Guidelines Panel (the Panel) recommends the following anti-SARS-CoV-2 therapies as preferred treatments for COVID-19. These drugs are listed in order of preference: • Ritonavir-boosted nirmatrelvir (Paxlovid ... Hydroxychloroquine and chloroquine are oral medications that doctors use to treat malaria. In March 2020, the FDA issued an EUA for both drugs to treat COVID-19. However, they revoked this ...Antiviral drugs are a class of medication used for treating viral infections. [1] Most antivirals target specific viruses, while a broad-spectrum antiviral is effective against a wide range of viruses. [2] Antiviral drugs are one class of antimicrobials, a larger group which also includes antibiotic (also termed antibacterial), antifungal and ...Antiviral drugs can help your body fight off viruses like COVID-19. Learn more about forms of antivirals approved for COVID-19 treatment. The FDA authorized two antivirals, Pfizer's Paxlovid and Merck's molnupiravir, for the treatment of COVID-19 in certain patients. Hospital Treatments for COVID-19 There are treatments for hospitalized patients with severe cases of COVID-19 that have been approved or authorized for emergency use by the Food and Drug Administration (FDA).The U.S. Food and Drug Administration (FDA) has issued an Emergency Use Authorization (EUA) for the emergency use of the unapproved product PAXLOVID for the treatment of mild-to-moderate coronavirus disease 2019 (COVID-19) in adults and pediatric patients (12 years of age and older weighing at least 40 kg) with positive results of direct severe ...Aug 25, 2023 · Antivirals are medicines that help stop a virus infecting healthy cells or multiplying in the body. There are antivirals available that work against COVID-19 and they work best when taken as soon as possible. COVID-19 antivirals do not work against other viruses like the flu. There are different antivirals for the flu. Apr 14, 2021 · Molnupiravir is an easier-to-synthesize, oral drug option that has been found to shorten the duration of infectiousness among people with symptomatic COVID-19. Late-stage clinical testing is under ... Today, the FDA issued an emergency use authorization for the first oral antiviral for treatment of COVID-19 in adults and pediatric patients (12 years of age and older weighing at least 40 ...The omicron variant has mutations in both the RNA-dependent RNA polymerase (RdRp) and the main protease of SARS-CoV-2, which are targets for antiviral drugs such as RdRp inhibitors (remdesivir and molnupiravir) and the main protease inhibitor PF-07304814, 5 which arouses concern regarding the decreased effectiveness of these drugs against omicron.May 26, 2023 · The antiviral treatment remdesivir, sold under the brand name Veklury, was the first COVID-19 therapy to get full FDA approval, and, so far, it's still the only one. Although originally used in COVID-19 patients only after they were hospitalized, new data suggests it can be helpful in outpatients who become infected and who are at high risk for ... These sections summarize the data on antiviral agents, including remdesivir, ritonavir-boosted nirmatrelvir, and anti-SARS-CoV-2 monoclonal antibodies. Antivirals, Including Antibody Products | COVID-19 Treatment Guidelines The FDA authorized two antivirals, Pfizer's Paxlovid and Merck's molnupiravir, for the treatment of COVID-19 in certain patients. Hospital Treatments for COVID-19 There are treatments for hospitalized patients with severe cases of COVID-19 that have been approved or authorized for emergency use by the Food and Drug Administration (FDA).May 9, 2023 · COVID-19 therapeutics can be used to prevent or treat eligible non-hospitalized patients who have mild to moderate COVID-19 symptoms. Prevention and early treatment for eligible patients can help improve patient outcomes, reduce stress on healthcare facilities, and even save lives. At this time, Veklury (remdesivir) and Paxlovid (nirmatrelvir ... Wear a Mask mask. If you become infected with COVID-19, there are treatment options that may help reduce how sick you become. The U.S. Food and Drug Administration has authorized and approved treatments that have already been taken by millions of people, reducing their risk of severe COVID-19 symptoms and keeping many of them out of the hospital.Credit: NIH/NIAID. Researchers have identified a powerful combination of antivirals to treat COVID-19. Combining the drug brequniar with remdesivir or molnupiravir—both approved by the U.S. Food ...Paxlovid is one of the only antiviral pills to effectively treat COVID-19 symptoms. ... the herbal remedy St. John's Wort, and HIV medications. (A complete list of those drugs starts on page 11 of ...Antiviral drugs are different from antibiotics, which fight against bacterial infections. Antiviral drugs for flu only work to treat flu. Flu antiviral drugs are different than antiviral drugs used to treat other infectious diseases such as COVID-19. Antiviral drugs prescribed to treat COVID-19 are not approved or authorized to treat flu.Antiviral medications can help your immune system fight back by helping stop the virus from multiplying your body. This lowers the amount of virus in your body with the goal of you having less severe symptoms and recovering more quickly. Antiviral therapy is not a cure for COVID-19.May 13, 2021 · SARS-CoV-2 belongs to the family of enveloped, single-strand RNA viruses known as Betacoronavirus in Coronaviridae, first reported late 2019 in China. It has since been circulating world-wide, causing the COVID-19 epidemic with high infectivity and fatality rates. As of the beginning of April 2021, pandemic SARS-CoV-2 has infected more than 130 ... Molnupiravir, an antiviral drug to treat mild to moderate COVID-19, is under consideration by the FDA for possible authorization. Merck. A Food and Drug Administration advisory committee voted ...New antiviral pills for COVID-19 recently authorized for emergency use in high-risk people by the U.S. Food and Drug Administration should give doctors an easier means of keeping people out of the ...Pfizer Covid pills may be risky with other medications. Dec. 26, 202106:39. In its fact sheet about Paxlovid, the FDA has published a detailed list of medications that may interact harmfully with ...Aug 31, 2022 · The Swiss company Molecular Partners has developed an antiviral drug for Covid-19, called ensovibep. The drug is a custom-made protein, made up of three sections that can each grab onto a ... Veklury is a COVID-19 treatment given intravenously (by IV or drip). Like oral antivirals, Veklury helps stop the virus that causes COVID-19 from making copies of itself in your body. WHO is eligible to receive Veklury? Adults 18 and over; Children who are 28 days of age or older and weigh at least 7 pounds (3 kg) AND who: Oct 21, 2019 · Here are 15 herbs with powerful antiviral activity. 1. Oregano. Oregano is a popular herb in the mint family that’s known for its impressive medicinal qualities. Its plant compounds, which ... Pfizer and Merck Covid-19 antiviral pills receive FDA emergency use authorization. ... Pfizer's pill is the first oral antiviral drug authorized by the FDA that is specifically designed to fight ...The Swiss company Molecular Partners has developed an antiviral drug for Covid-19, called ensovibep. The drug is a custom-made protein, made up of three sections that can each grab onto a ...Mar 24, 2021 · An international team of researchers has found that three commonly used antiviral and antimalarial drugs are effective in vitro at preventing replication of SARS-CoV-2, the virus that causes COVID-19. The work also underscores the necessity of testing compounds against multiple cell lines to rule out false negative results. From these results, it is evident that the use of these drugs for COVID-19 requires further investigation. An alternative treatment for COVID-19 is the utilization of convalescent plasma (CP) (Chen L. et al., 2020). This treatment refers to plasma therapy based on plasma or plasma derivatives, obtained from donors who were previously infected ...Antivirals. Antiviral medications help the body fight off harmful viruses. The drugs can ease symptoms and shorten the length of a viral infection. Antivirals also lower the risk of getting or spreading viruses that cause herpes and HIV. One approved antiviral treats the coronavirus that causes COVID-19. There are currently two oral antiviral pills, Paxlovid and Lagevrio, authorized for emergency use for the treatment of certain patients with mild to moderate COVID-19. Data have shown that the...demonstrated clinical benefit for the treatment of COVID-19, the Panel recommends against the use of ivermectin for the treatment of COVID-19 (AIIa). See Table 7b for summaries of the key studies that informed the Panel’s recommendation. Drug Availability Ivermectin is not approved or authorized by the FDA for the treatment of COVID-19 ... To access the Letters of Authorization and Fact Sheets for Healthcare Providers and Patients, Parents, and Caregivers for EUAs for drug and biological products during the COVID-19 pandemic, see ...Historically, antiviral therapy has been available only for a limited number of infections, including those caused by HIV, herpes, hepatitis B and C, and influenza A and B. Drug companies and researchers investigated new and existing antivirals for potential use in treating COVID-19, and some candidates have proven effective in clinical trials.Recommendations for the use of antiviral agents to treat COVID-19 Remdesivir Information on the use of intravenous remdesivir as treatment for COVID-19 Ritonavir-Boosted Nirmatrelvir (Paxlovid) Drug interactions and other considerations for the use of ritonavir-boosted nirmatrelvir (Paxlovid) MolnupiravirThe treatments available for people at the highest risk of becoming seriously ill from COVID-19 are: Nirmatrelvir plus ritonavir, remdesivir and molnupiravir are antiviral medicines. Sotrovimab is known as a neutralising monoclonal antibody (nMAb). Sotrovimab is recommended if nirmatrelvir plus ritonavir (Paxlovid) is not suitable. Paxlovid and molnupiravir, the COVID antiviral treatments, may be hard to find : Shots - Health News Paxlovid and molnupiravir have been authorized for emergency use to keep COVID-19 patients out ...COVID-19 therapeutics can be used to prevent or treat eligible non-hospitalized patients who have mild to moderate COVID-19 symptoms. Prevention and early treatment for eligible patients can help improve patient outcomes, reduce stress on healthcare facilities, and even save lives. At this time, Veklury (remdesivir) and Paxlovid (nirmatrelvir ...There are two antiviral medications that have been issued Emergency Use Authorization (EUA) by the U.S. FDA: Pfizer’s Paxlovid and Merck’s molnupiravir. Both treatments are in limited supply, and a prescription does not guarantee the medication will be available. Treatment should be initiated as soon as possible after diagnosis of COVID-19 ...Recommendations for the use of antiviral agents to treat COVID-19 Remdesivir Information on the use of intravenous remdesivir as treatment for COVID-19 Ritonavir-Boosted Nirmatrelvir (Paxlovid) Drug interactions and other considerations for the use of ritonavir-boosted nirmatrelvir (Paxlovid) MolnupiravirPresident Trump's COVID-19 Treatment Includes These Drugs. October 05, 2020 6:13 PM. Steve Baragona. FILE - Vials of the drug remdesivir are seen at a hospital in Germany, April 8, 2020. The list ...And if the history of antiviral research is any guide, the first drugs for Covid-19 will probably only offer modest benefit against the disease, Dr. Fauci said. But that would be a good start.Molnupiravir is an easier-to-synthesize, oral drug option that has been found to shorten the duration of infectiousness among people with symptomatic COVID-19. Late-stage clinical testing is under ...19 Apr 2022 06:56PM (Updated: 19 Apr 2022 07:32PM) SINGAPORE: The antiviral drug molnupravir will be the second oral medicine approved in Singapore for the treatment of adult COVID-19 patients ...The Panel reviews the most recent clinical data to develop treatment recommendations for clinicians who are caring for patients with COVID-19. Antivirals, Including Antibody Products These sections summarize data on the use of antiviral agents for the treatment of COVID-19.May 26, 2023 · To access the Letters of Authorization and Fact Sheets for Healthcare Providers and Patients, Parents, and Caregivers for EUAs for drug and biological products during the COVID-19 pandemic, see ... Who can and cannot take it. How and when to take it. Side effects. Pregnancy, breastfeeding and fertility. Taking Paxlovid with other medicines and herbal supplements. Dec 16, 2022 · The US Food and Drug Administration hasn't listed oseltamivir in its drug shortage database, but the agency did acknowledge "localized shortages" of the drug on Dec 5. Drug restocking date uncertain Antiviral therapy is an important adjunct to vaccination in the prevention and control of the flu and can reduce the duration of flu symptoms and ... Mar 16, 2021 · Antiviral drugs and COVID-19 The worldwide outbreak of COVID-19 virus infection is associated with the unavailability of specific drug(s) to combat with this viral infection. To date, nearly 10 million people are infected and about 500,000 people die worldwide due to COVID-19 viral infection. Feb 7, 2022 · Credit: NIH/NIAID. Researchers have identified a powerful combination of antivirals to treat COVID-19. Combining the drug brequniar with remdesivir or molnupiravir—both approved by the U.S. Food ... The antiviral that doctors prefer to use to treat certain cases of COVID-19 is a pill called nirmatrelvir-ritonavir ( Paxlovid ). While Paxloid has only received emergency use authorization...Apr 22, 2022 · Today, WHO made a strong recommendation for nirmatrelvir and ritonavir, sold under the name Paxlovid, for mild and moderate COVID-19 patients at highest risk of hospital admission, calling it the best therapeutic choice for high-risk patients to date. However, availability, lack of price transparency in bilateral deals made by the producer, and the need for prompt and accurate testing before ... Dec 21, 2021 · Ibuprofen, which is also known by the brand names Advil and Motrin, is a non-steroidal anti-inflammatory drug (NSAID). These types of medications can help lower your fever and minimize muscle aches from COVID-19, while also reducing some inflammation in your body. Ibuprofen doesn’t treat the virus itself, but it can make you feel a lot better. Pfizer Covid pills may be risky with other medications. Dec. 26, 202106:39. In its fact sheet about Paxlovid, the FDA has published a detailed list of medications that may interact harmfully with ...Antiviral drugs can help your body fight off viruses like COVID-19. Learn more about forms of antivirals approved for COVID-19 treatment. Drugs that combat viral infections are called antiviral drugs. There are no effective antiviral drugs for many viral infections. However, there are several drugs for influenza, a couple of drugs for herpesviruses, and some new antiviral drugs for treatment of HIV and hepatitis C infections. The arsenal of antivirals is complex.Antiviral drugs are a class of medication used for treating viral infections. [1] Most antivirals target specific viruses, while a broad-spectrum antiviral is effective against a wide range of viruses. [2] Antiviral drugs are one class of antimicrobials, a larger group which also includes antibiotic (also termed antibacterial), antifungal and ... Many medications are available to treat COVID-19, including oral treatments like Paxlovid (nirmatrelvir / ritonavir) and Lagevrio (molnupiravir). In late May 2023, the FDA fully approved Paxlovid for COVID-19. It’s the first oral antiviral that is approved to treat the condition. It was previously only available for emergency use.Dec 22, 2021 · The U.S. Food and Drug Administration (FDA) has issued an Emergency Use Authorization (EUA) for the emergency use of the unapproved product PAXLOVID for the treatment of mild-to-moderate coronavirus disease 2019 (COVID-19) in adults and pediatric patients (12 years of age and older weighing at least 40 kg) with positive results of direct severe ... Oral antiviral treatment works by targeting specific proteins on the SARS-CoV-2 virus to prevent efficient virus replication within the host cell. Paxlovid and molnupiravir reduce the risk of hospitalization and death by 88% and 30% respectively, in patients at high-risk for severe COVID-19 when started early after symptom onset.Two new oral antiviral medications are available for treatment of COVID-19. Two new antiviral medications, ritonavir-boosted nirmatrelvir (Paxlovid, ie, nirmatrelvir-ritonavir) and molnupiravir (Lagevrio), are currently available in the US under emergency use authorization. These 2 drugs are authorized for treatment of patients with mild to ...The Panel reviews the most recent clinical data to develop treatment recommendations for clinicians who are caring for patients with COVID-19. Antivirals, Including Antibody Products These sections summarize data on the use of antiviral agents for the treatment of COVID-19.Mar 6, 2023 · Ivermectin is a Food and Drug Administration (FDA)-approved antiparasitic drug used to treat several neglected tropical diseases, including onchocerciasis, helminthiases, and scabies. 1 For these indications, ivermectin has been widely used and is generally well tolerated. 1,2 Ivermectin is not approved by the FDA for the treatment of any viral infection. Here are 15 herbs with powerful antiviral activity. 1. Oregano. Oregano is a popular herb in the mint family that’s known for its impressive medicinal qualities. Its plant compounds, which ...New antiviral pills for COVID-19 recently authorized for emergency use in high-risk people by the U.S. Food and Drug Administration should give doctors an easier means of keeping people out of the ...The antiviral Lagevrio (molnupiravir) is safe and effective at reducing the risk of hospitalisation and death in people with mild to moderate COVID-19 who are at increased risk of developing ...If you have a Medicare card, and are eligible, the Pharmaceutical Benefits Scheme PBS subsidises the cost of oral antiviral COVID-19 medication. From 1 January 2023 the maximum that a pharmacy can charge per oral medication is: $7.30 for concession cardholders. State and territory hospitals can provide the oral antivirals if you are advised to ...The antiviral treatment remdesivir, sold under the brand name Veklury, was the first COVID-19 therapy to get full FDA approval, and, so far, it's still the only one. Although originally used in COVID-19 patients only after they were hospitalized, new data suggests it can be helpful in outpatients who become infected and who are at high risk for ...Paxlovid is a swallowable tablet that stops the COVID-19 virus from replicating and progressing to a more severe state. Most recently, the drug was approved by the Food and Drug Administration (FDA) to treat mild to moderate COVID-19 in adults (people 18 and older) who are at high risk for developing severe COVID-19.Today, the FDA issued an emergency use authorization for the first oral antiviral for treatment of COVID-19 in adults and pediatric patients (12 years of age and older weighing at least 40 ...
May 26, 2023 · The antiviral treatment remdesivir, sold under the brand name Veklury, was the first COVID-19 therapy to get full FDA approval, and, so far, it's still the only one. Although originally used in COVID-19 patients only after they were hospitalized, new data suggests it can be helpful in outpatients who become infected and who are at high risk for ... . Delta 8 side effects next day
The omicron variant has mutations in both the RNA-dependent RNA polymerase (RdRp) and the main protease of SARS-CoV-2, which are targets for antiviral drugs such as RdRp inhibitors (remdesivir and molnupiravir) and the main protease inhibitor PF-07304814, 5 which arouses concern regarding the decreased effectiveness of these drugs against omicron.Antiviral Treatments That the Panel Recommends Against The Panel recommends against the use of the following drugs for the treatment of COVID-19, except in a clinical trial: Interferon alfa or beta in nonhospitalized patients ( AIIa ) Interferon alfa in hospitalized patients ( AIIa )n engl j med 384;6 nejm.org February 11, 2021 499 Repurposed Antiviral Drugs for Covid-19 no trial lopinavir while they were unable to swal-low. The regimen for interferon (mainly subcuta-Wear a Mask mask. If you become infected with COVID-19, there are treatment options that may help reduce how sick you become. The U.S. Food and Drug Administration has authorized and approved treatments that have already been taken by millions of people, reducing their risk of severe COVID-19 symptoms and keeping many of them out of the hospital. Feb 7, 2022 · Credit: NIH/NIAID. Researchers have identified a powerful combination of antivirals to treat COVID-19. Combining the drug brequniar with remdesivir or molnupiravir—both approved by the U.S. Food ... Antiviral drugs are a class of medication used for treating viral infections. [1] Most antivirals target specific viruses, while a broad-spectrum antiviral is effective against a wide range of viruses. [2] Antiviral drugs are one class of antimicrobials, a larger group which also includes antibiotic (also termed antibacterial), antifungal and ... Antiviral drugs can help your body fight off viruses like COVID-19. Learn more about forms of antivirals approved for COVID-19 treatment. There are two oral antiviral therapies currently available to treat Covid-19 in the United States. One, called Paxlovid, was developed by Pfizer and was the first oral treatment authorized for ...The antiviral Lagevrio (molnupiravir) is safe and effective at reducing the risk of hospitalisation and death in people with mild to moderate COVID-19 who are at increased risk of developing ...The FDA also has approved the rheumatoid arthritis drugs baricitinib (Olumiant) and tocilizumab (Actemra) to treat COVID-19 in some cases. Baricitinib is a pill that seems to work against COVID-19 by reducing inflammation and having antiviral activity. Tocilizumab is an injection.Estimates of COVID-19 deaths in the U.S. show that people from racial and ethnic minority groups are dying from COVID-19 disproportionately, and studies have identified racial and ethnic differences in at-home COVID-19 test use, vaccination coverage, and access to outpatient therapeutics. 14-16 Data has shown that compared to non-Hispanic White ...Mar 1, 2022 · A lab technician works on the production of molnupiravir, an oral antiviral drug that some countries have authorized for use against COVID-19. Credit: Amr Abdallah Dalsh/Reuters/Alamy Aug 15, 2023 · COVID-19 antiviral medicines are available to treat eligible people with COVID-19 at home. You must start taking COVID-19 medicines within the first 5 days of becoming unwell with COVID-19. When taken early in your COVID-19 illness, antivirals can help you stay out of hospital. These medicines are free for eligible people within 5 days of their ... demonstrated clinical benefit for the treatment of COVID-19, the Panel recommends against the use of ivermectin for the treatment of COVID-19 (AIIa). See Table 7b for summaries of the key studies that informed the Panel’s recommendation. Drug Availability Ivermectin is not approved or authorized by the FDA for the treatment of COVID-19 ... Mar 12, 2020 · In February 2020, China approved the use of the antiviral drug favilavir to treat symptoms of COVID-19. The drug was initially developed to treat inflammation in the nose and throat. Remdesivir has demonstrated in vitro and in vivo activity against SARS-CoV-2. 1. Intravenous remdesivir is approved by the Food and Drug Administration (FDA) for the treatment of COVID-19 in adults and pediatric patients aged ≥28 days and weighing ≥3 kg. In nonhospitalized patients with mild to moderate COVID-19 who are at high risk of ...Abstract Background New treatments are needed to reduce the risk of progression of coronavirus disease 2019 (Covid-19). Molnupiravir is an oral, small-molecule antiviral prodrug that is active agai....