I'm taking effexor (venlafaxine) 150mg and lamictal 200mg. i'm worried about my low energy. can these drugs cause hepatotoxicity and which are the symptoms?

Talk to your doctor : This is a good combination of medication. These meds are usually well-tolerated. Talk to your doctor about the risks, benefits and side effects of your treatment. If needed, your doctor can order tests to monitor your liver. We look for a yellow coloration to the white part of the eye or yellowing of the skin (jaundice) which suggests liver injury or disease. Talk to your doctor. Best wishes!