Chloroquine has been extensively used in mass drug administrations, which may have contributed to the emergence and spread of resistance. It is recommended to check if chloroquine is still effective in the region prior to using it. Effect of plaquenil on free light chains Plaquenil and stem cell injection I have some unused -- but expired -- chloroquine pills left over from a previous trip that I am tempted to use. They haven't been expired that long; their expiration date was only back in February of this year 2008. A report states that an old malaria drug known as Chloroquine effectively inhibits coronavirus infection and spread. In a three-page paper published in Cell Research, scientists at the Wuhan Institute of Virology’s State Key Laboratory of Virology wrote that both Chloroquine and the antiviral Remdesivir were, individually, “highly effective” at inhibiting replication of the Chinese experts, based on the result of clinical trials, have confirmed that chloroquine phosphate, an antimalarial drug, has a certain curative effect on the novel coronavirus disease COVID-19. The Centers for Disease Control and Prevention recommend against treatment of malaria with chloroquine alone due to more effective combinations. In areas where resistance is present, other antimalarials, such as mefloquine or atovaquone, may be used instead. Expired chloroquine Chloroquine Oral Tablet 250Mg Drug Medication Dosage Information, Hilarious Reactions As Report Says Chloroquine Effectively. How does plaquenil work In my opinion the expiration date of any medication is a conservative estimate of a time until when the medication retains its potency. Chloroquine can produce toxic reactions attribute to. Can we use expired drugs? Besides reduced efficacy are.. Antimalarial drug confirmed effective on COVID-19 Chinese.. Medicines for the Prevention of Malaria While Traveling.. Most drug companies test for effectiveness only for the first two to three years after opening, which is why labels rarely list a later expiration date. Use Valium within one year. Because diazepam, which is sold under names including Valium, is a prescription drug, there are additional guidelines for its expiration date. Plaquenil is the brand name for the prescription drug hydroxychloroquine. It's used to treat and prevent malaria infection, and to reduce symptoms and progression of autoimmune diseases such as. A severe eye problem has happened with chloroquine. This may lead to lasting eyesight problems. The risk may be higher if you have some types of eye or kidney problems. The risk may also be higher with some doses of chloroquine, if you use chloroquine for longer than 5 years, or if you take certain other drugs like tamoxifen.