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Common side effects include headache and vomiting. [2] Severe side effects may include kidney problems. [2] Use in pregnancy appears to be safe. [2] It is a prodrug, which works after being converted to aciclovir in a person's body. [2] Valaciclovir was patented in 1987 and came into medical use in 1995.
Valaciclovir and acyclovir act by inhibiting viral DNA replication, but as of 2016 there was little evidence that they are effective against Epstein–Barr virus, they are expensive, they risk causing resistance to antiviral agents, and (in 1% to 10% of cases) can cause unpleasant side effects.
Other reported side effects were angina and Stevens–Johnson syndrome. Pfizer first acknowledged cardiovascular risks associated with Bextra in October 2004. The American Heart Association soon after was presented with a report indicating patients using Bextra while recovering from heart surgery were 2.19 times more likely to suffer a stroke ...
Cases of norovirus, a.k.a. the stomach bug, are surging in the U.S. right now. There is no specific medication to treat norovirus. Doctors share tips for feeling better, sooner. The U.S. is seeing ...
2. Eat Smaller, More Frequent Meals. Instead of three main meals, try eating smaller, more frequent meals throughout the day. This can help if nausea is making it hard to feel like eating or if ...
Here’s what to remember about tadalafil side effects if you’ve started taking Cialis or are about to take your first tadalafil dose: Don’t ignore side effects. If you’re prescribed Cialis ...
Headache — an often transient side effect that is common to most serotonin reuptake inhibitors and that most often occurs at the beginning of therapy or after a dose escalation. Nausea — an adverse effect that is more common with venlafaxine than with the SSRIs. Usually transient and less severe in those receiving the extended release ...
Different sources note different incidence of side effects. The most common side effect is breakthrough bleeding. Combined oral contraceptive pills can improve conditions such as dysmenorrhea, premenstrual syndrome, and acne, [105] reduce symptoms of endometriosis and polycystic ovary syndrome, and decrease the risk of anemia. [106]