Tremadone has no side effects listed on the supplement's website. Valerian root, an ingredient in Tremadone, may cause headache, upset stomach, problems thinking, dry mouth and excitability, states Drugs.com. Another ingredient in Tremadone, called passion flower, may cause dizziness, confusion, decreased coordination and altered levels of consciousness, states WebMD.
Tremadone is an herbal supplement designed for individuals with essential tremor affecting the hand, arm, leg or voice. Besides valerian root and passion flower, the supplement contains skullcap, folic acid, vitamin B2 with riboflavin, vitamin B12 with methylcobalamin, and GABA, according to Tremadone. Individuals should take Tremadone twice a day after meals to achieve the best results.