If you used Valsartan and you have been diagnosed with liver, kidney or lung cancer, or have experienced liver damage, you should consult with a personal injury/product liability attorney in your area.
Investigations of Valsartan cases are currently being conducted. These investigations may result in class action suits in the future.
Whether a class action or a personal action is better for you will depend on the specific facts of your medical condition. The specifics should be discussed with your attorney.