Tenofovir side effects do not include decreased libido. Tenofovir is a nucleoside antiviral drug mainly used for the treatment of hepatitis B. The side effects are mainly in digestive tract symptoms, bone marrow suppression, and psychiatric symptoms. 1.Gastrointestinal symptoms: the incidence of adverse events is 5%, which can occur due to the components of the drug stimulate the digestive tract nausea, vomiting, loss of appetite, abdominal pain, abdominal distension, diarrhea. The most common adverse reaction is nausea in patients with chronic hepatitis B in the compensated phase. 2. Bone marrow suppression: the ingredients in tenofovir also lead to a decrease in white blood cells, red blood cells, granulocytes and platelets after taking the drug. 3. Psychiatric symptoms: The most common adverse effects of tenofovir in HIV-infected adults are headache, pain, depression, and weakness. If there is a decrease in libido, it is recommended to consider a sex hormone test to determine if the low libido is due to changes in estrogen or testosterone levels in the body, and some people with hypothyroidism may also have a decreased libido. The application of drugs need to be under the guidance of a physician to use drugs, it is recommended that the problem of reduced libido timely medical treatment, standardized treatment. Avoiding the mistake of the disease.