Managing Diltiazem HCL withdrawal symptoms can be quite challenging. It's important to first consult a healthcare professional before stopping or altering your dosage, as sudden withdrawal can lead to serious complications. Gradually reducing the dosage under medical supervision can help minimize the withdrawal symptoms. It's also necessary to monitor your health closely during this period, noting any changes or symptoms. Care should also be taken to maintain a healthy lifestyle, including diet and exercise, to support your body during this transition.