Chlorzoxazone comes as a tablet to take by mouth. It usually is taken three or four times a day. Follow the directions on your prescription label carefully. Take chlorzoxazone exactly as directed. Do not take more or less of it or take it more often than prescribed by your doctor.

Chlorzoxazone may interact with these medications and cause serious side effects;

Hydrocodone

Carisoprodol

Cyclobenzaprine 

Antihistamines

Cetirizine

Diphenhydramine

Common side effects of Chlorzoxazone are

fast heartbeat.

itching.

decreased appetite.

hives.

large, hive-like swelling on the face, eyelids, lips, throat, hands, legs, feet, or sex organs.

difficulty swallowing.

Consumption of alcohol or use of Marijuana (cannabis), can make you dizzy or drowsy.

Do not drive or do activities that need alertness.after taking Zanaflex.

Tell your doctor if you have a medical history, especially of liver disease

The most common withdrawal symptoms of Chlorzoxazone are

Anxiety.

Hallucinations.

Psychosis.

Headache.

Muscle twitching.

Impaired balance or coordination.

Taking Chlorzoxazone more than the prescribed amount may cause vomiting/nausea, severe drowsiness, muscle weakness, fast/irregular breathing.

Store at room temperature away from light and moisture. Do not store in the bathroom. Keep all medications away from children and pets.

Like other medicines, chlorzoxazone is also having some side effects. Drowsiness is one of them. Drinking alcohol while taking this medicine may increase the risk of drowsiness. If this situation gets worse then consult a doctor first.

Both chlorzoxazone and tramadol are used to relieve pain but their working procedure is not the same. Chlorzoxazone works by acting on the centers in the brain and spinal cord to relieve muscle spasm while tramadol decreases the possibility of pain by blocking the transmission of pain signals to the brain.

Benzhydrocodone, potassium, hydrocodone, sodium oxybate, lonafarnib etc, ingredients should not be taken with chlorzoxazone. These interactions may cause side effects such as dizziness, drowsiness etc.