What is an oval white pill with 20 on it?

An oval white pill imprinted with "20" could be identified as a 20 mg dosage of the medication Lisinopril, which is used to treat high blood pressure and heart failure. However, pill identification can vary, so it's essential to consult a healthcare professional or use a reliable pill identification tool for accurate identification. Always ensure to verify with a pharmacist or doctor before taking any medication.