Tenofovir disoproxil fumarate is not clinically contraindicated in pregnant women, but caution should be exercised if the drug is needed during pregnancy. At present, there is no clinical finding that the embryo will be malformed or neonatal toxicity after the use of tenofovir disoproxil fumarate in pregnant women, so the drug is not clinically prohibited for pregnant women, and there is no strict requirement for pregnant women to prohibit, but the use of the drug during pregnancy needs to be cautious. If it is necessary during pregnancy and the disease progresses relatively quickly, you can usually consider taking tenofovir disoproxil fumarate, which is mainly suitable for the treatment of chronic hepatitis B. However, the dosage should be decided according to the progress of the disease as well as the severity of the disease. When taking tenofovir disoproxil fumarate tablets, it is important to know that it is contraindicated if you are allergic to the ingredients of the drug, or if you are allergic to ingredients such as lactose, microcrystalline cellulose, and polyvinyl alcohol. It should be used with caution during pregnancy, breastfeeding and childhood. Prolonged use of the drug may cause some adverse reactions, such as headache, nausea and fatigue, etc. In mild cases, no special treatment is usually required, but if the symptoms are more pronounced, it is necessary to stop using the drug in a timely manner. If you need to take tenofovir disoproxil fumarate during pregnancy, you should follow your doctor’s instructions to avoid unauthorized use of the drug affecting the development of the embryo.