Ads
related to: can valtrex become ineffective
Search results
Results From The WOW.Com Content Network
Valaciclovir, also spelled valacyclovir, is an antiviral medication used to treat outbreaks of herpes simplex or herpes zoster (shingles). [2] It is also used to prevent cytomegalovirus following a kidney transplant in high risk cases. [2]
The labeled expiration date is not an indication of when a drug has become ineffective or unsafe to use. [4] Many drugs are effective for years after their expiration dates. [ 4 ] However, it is difficult for anyone including researchers and physicians to find information to verify how much any given drug will degrade in efficacy or become ...
If these drugs are misused or mismanaged, multidrug-resistant TB (MDR-TB) can develop. MDR-TB takes longer to treat with second-line drugs (i.e., amikacin, kanamycin, or capreomycin), which are more expensive and have more side-effects. XDR-TB can develop when these second-line drugs are also misused or mismanaged and become ineffective.
Similarly, PLWHA require additional calories and nutritionally support that require foods free from contamination to prevent further immunocompromising. Food insecurity can further exacerbate the progression of HIV/AIDS and can prevent PLWHA from consistently following their prescribed regimen, which will lead to poor outcomes. [citation needed]
Cytomegalovirus can become resistant to ganciclovir and foscarnet under treatment, especially in immunosuppressed patients. Herpes simplex virus rarely becomes resistant to acyclovir preparations, mostly in the form of cross-resistance to famciclovir and valacyclovir , usually in immunosuppressed patients.
Aciclovir risks causing resistance to antiviral agents, and in 1% to 10% of cases can cause unpleasant side effects. [19] Aciclovir taken by mouth does not appear to decrease the risk of pain after shingles. [20] In those with herpes of the eye, aciclovir may be more effective and safer than idoxuridine. [21]
Treatments for influenza include a range of medications and therapies that are used in response to disease influenza.Treatments may either directly target the influenza virus itself; or instead they may just offer relief to symptoms of the disease, while the body's own immune system works to recover from infection.
There are three general mechanisms that may allow bacteria to become resistant to beta-lactam antibiotics: inability to access/target penicillin-binding protein (PBP) enzyme; inhibition of binding to PBP via modification of the enzyme; hydrolysis/inactivation of the antibiotic by beta-lactamases. [7]