At 10 mg, you are taking a very low dose of amitriptyline, which is generally well-tolerated over the long term. The main risks to monitor are mild side effects like dry mouth, constipation, or slight morning grogginess. In older adults, prolonged use can sometimes impact memory or balance. Because your body has adapted to this medication for over two years, stopping it suddenly can cause rebound insomnia or mild withdrawal. It is best to consult your doctor to periodically review your sleep health and, if you ever decide to stop, to safely taper off the medication under their guidance.