If they do, notify your doctor as soon as possible: stomach upset, nausea, constipation dry mouth headache blurred vision lightheadedness, dizziness, drowsiness. If the victim has collapsed or is not breathing, call local emergency services at 911. Caution is advised when using this drug in the elderly because they may be more sensitive to its side effects, especially dizziness and drowsiness. Innovator got approval for its NDA on metaxalone ohne rx 800mg tablets on Aug 30, 2002Innovator is already in litigation with Mutual Pharmaceutical and Sandoz. Tell your doctor if you have or have ever had kidney disease, liver disease, seizures, or blood disorder. Ask your pharmacist any questions you have about refilling your prescription.