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Tenofovir disoproxil
Summary
Tenofovir disoproxil, sold under the trade name Viread among others, is a medication used to treat chronic hepatitis B and to prevent and treat HIV/AIDS. It is generally recommended for use with other antiretrovirals. It may be used for prevention of HIV/AIDS among those at high risk before exposure, and after a needlestick injury or other potential exposure. It is sold both by itself and together in combinations such as emtricitabine/tenofovir, efavirenz/emtricitabine/tenofovir, and elvitegravir/cobicistat/emtricitabine/tenofovir. It does not cure HIV/AIDS or hepatitis B. It is available by mouth as a tablet or powder.
Common side effects include nausea, rash, diarrhea, headache, pain, depression, and weakness. Severe side effects include high blood lactate and an enlarged liver. There are no absolute contraindications. It is often recommended during pregnancy and appears to be safe. It is a nucleotide reverse transcriptase inhibitor and works by decreasing the ability of the viruses to replicate.
Tenofovir was patented in 1996 and approved for use in the United States in 2001. It is on the World Health Organization's List of Essential Medicines. It is available in the United States as a generic medication as of 2017.
Tenofovir disoproxil is used for HIV-1 infection and chronic hepatitis B treatment. For HIV-1 infection, tenofovir is indicated in combination with other antiretroviral agents for people 2 years of age and older. For chronic hepatitis B patients, tenofovir is indicated for patients 12 years of age and older.
Tenofovir can be used for HIV prevention in people who are at high risk for infection through sexual transmission or injecting drug use. A Cochrane review examined the use of tenofovir for prevention of HIV before exposure and found that both tenofovir alone and the tenofovir/emtricitabine combination decreased the risk of contracting HIV for high risk patients. The U.S.
Official source
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