It is very important that your doctor check your progress at regular visits to allow for changes in your dose and to check for any unwanted effects.
Dronabinol will add to the effects of alcohol and other CNS depressants (medicines that make you drowsy or less alert). Some examples of CNS depressants are antihistamines or medicine for allergies or colds; sedatives, tranquilizers, or sleeping medicine; prescription pain medicines including other narcotics; medicine for seizures (e.g., barbiturates); muscle relaxants; or anesthetics, including some dental anesthetics. Check with your doctor before taking any of the above while you are taking this medicine.
This medicine may cause some people to become drowsy, dizzy, lightheaded, or to feel a false sense of well-being. Make sure you know how you react to this medicine before you drive, use machines, or do anything else that could be dangerous if you are dizzy or are not alert and clearheaded.
Dizziness, lightheadedness, or fainting may occur, especially when you get up suddenly from a lying or sitting position. Getting up slowly may help lessen this problem.
If you develop any unusual or strange thoughts and behavior while using dronabinol, be sure to discuss it with your doctor. Some changes that have occurred in people receiving this medicine are like those seen in people who drink too much alcohol.
If you think you or someone else may have taken an overdose of dronabinol, get emergency help at once. Taking an overdose of this medicine or taking alcohol or CNS depressants with this medicine may lead to severe mental effects. Signs of overdose include changes in mood, confusion, hallucinations, mental depression, nervousness or anxiety, and fast or pounding heartbeat.
Do not take other medicines unless they have been discussed with your doctor. This includes prescription or nonprescription (over-the-counter [OTC]) medicines and herbal or vitamin supplements.