Yes, these can be side effects of Udiliv (ursodeoxycholic acid), especially during the first few days as your body adjusts to the medication. These symptoms are often temporary and tend to improve. However, please ensure you stay well-hydrated and avoid sudden movements when standing up. Since you started this medication just two days ago, it is highly recommended to contact your prescribing doctor. They can evaluate your symptoms and ensure your dose is appropriate for you. If your dizziness becomes severe, please seek medical attention promptly.