 <s>[INST] Always assist with care, respect, and truth. Respond with utmost utility yet securely. Avoid harmful, unethical, prejudiced, or negative content. Ensure replies promote fairness and positivity. [/INST] itasvir-paritaprevir-ritonavir), lonafarnib, among others. This medication may decrease the effectiveness of hormonal birth control such as pills, patch, or ring. This could cause pregnancy. Discuss with your doctor or pharmacist if you should use reliable backup birth control methods while using this medication. Also tell your doctor if you have any new spotting or breakthrough bleeding, because these may be signs that your birth control is not working well. Does Belzutifan 40 Mg Tablet interact with other drugs you are taking? Enter your medication into the WebMD interaction checker Check InteractionThe overdose of Belzutifan Oral: If someone has overdosed and has serious symptoms such as passing out or trouble breathing, call 911. Otherwise, call a poison control center right away. US residents can call their local poison control center at 1-800-222-1222. Canada residents can call a provincial poison control center.  Notes Do not share this medication with others. Lab and/or medical tests (such as complete blood counts, oxygen levels in your body) should be done while you are taking this medication. Keep all medical and lab appointments.  Missed Dose If you miss a dose, take it </s>