CBD tincture produces no serious side effects. The worst thing you can expect from any high-CBD product, CBD tincture included, is dry mouth. But if you’re taking a CBD tincture to treat a more debilitating disorder, a little dry mouth is a small price to pay to feel better.
Technically, CBD does produce one other “side effect” of note: it can interfere with your liver’s ability to process other medications. That could have unintended consequences if the CBD you’re taking isn’t meant to completely replace another medication (like heart or blood-pressure medication). Be sure to talk to your doctor before taking a CBD product.