The combination of Tenofovir, Lamivudine, and Efavirenz can be used as an HIV blocker, but the exact dosing regimen should be followed by your doctor. Blocking drugs are HIV-blocking medications that can be taken after high-risk behaviors to reduce the risk of contracting HIV. Tilazyme is a combination of tenofovir, lamivudine and efavirenz, and is the first line of treatment for HIV. Tilaji can also be taken as an HIV blocker, but the combination is not the first choice for HIV blockade. Examples include decreased appetite, rash, nausea, diarrhea, and headache. Before using the combination of Tirai, it is important to note that it must be contraindicated for those who are allergic to the ingredients contained in the drug and should be replaced with other drugs as prescribed by the doctor. Also the use of the drug may cause adverse reactions such as decreased appetite, skin rashes, nausea, diarrhea, and headaches. Individuals should not abuse blocking drugs, and if you need to take blocking drugs after having high-risk behavior, it is recommended that you consult a medical professional and take the medication under the guidance of a physician.