Cyclobenzaprine is basically a medication having muscle relaxant properties. It is specially designed for the purpose of alleviating skeletal muscle spasm and other associated acute sorts of pain, by blocking the nerve impulses during any trauma. Its exact working mechanism is very unclear, but the studies performed on rats showed that this drug activates certain chemicals from the brain stem, which leads to extra release of norepinephrine (certain hormonal extract) in the spinal cord. It is well recognized amongst the first generation tricyclic antidepressant, which work to increase norepinephrine concentration. This process leads to analgesic effects during chronic muscle pain and nerve pain. Few important facts about the cyclobenzaprine side effects are given in the paragraphs below, along with its uses and advantages. Facts It is a powerful drug mainly used for people having muscle spasm, especially after sustaining an injury. As a result, it is an USFDA approved drug for the treatment of such pains and musculoskeletal conditions. It is always prescribed along with proper rest and other physiotherapy measures. It has also shown some really positive effects in the treatment of fibromyalgia and hence, it is also prescribed as an off-label medication in this medical condition. However, there are several things that one needs to consider before consuming this drug. Considerations Before checking for the side effects, one must strictly be aware about the conditions in which one should never consume this drug. There are a few health conditions along with several medications that restrict the dosage of this drug to none. Side effects are possible if one consumes it irrespective of the knowledge of the side effects and doctor's advice. Medications A person who has consumed certain MAO (monoamine oxidase) inhibitors before two weeks of the consumption of cyclobenzaprine. These MAO inhibitors include isocarboxazid, phenelzine, tranylcypromine, and/or selegiline. It is very important to avoid consumption of cyclobenzaprine in case of the above mentioned MAO inhibitors, to avoid life-threatening problems. It is also needed to be avoided in case of alcohol consumption. Medical Conditions There are certain medical conditions that restrict the usage of this drug. These medical conditions are related with the rate of heartbeat and heart health. In case of a person having history of heart attack and heart blockage, congestive heart failure, irregular heart rate, etc., the person must only consume this drug on doctor's advice. Other medical conditions that make this drug a threat include liver diseases, glaucoma, kidney diseases, problems with urination, enlarged prostate glands, USFDA pregnancy category B, etc., are the medical conditions that would strictly require prior medical intervention and adjustment of the dosage beforehand. Side Effects As a matter of fact, there are various side effects of this medication that a person must watch out for and report them forthwith to the respective health care provider. At first glance, they look well ordinary but they could be primary stages of some serious and life-threatening health complications. The side effects vary greatly from person to person. Some of them include, fainting, arrhythmia (irregular heart rate), tachycardia (rapid heart rate), heart palpitations, hypotension, high blood pressure, seizures, anxiety, hallucinations, depression, doubled vision, muscle fatigue, etc. Signs of liver failure including jaundice, stomach pain, upper right abdominal pain, and dark urination are some of the side effects. Others include difficulty in passing urine, frequent urination, allergies and allergic reactions, like itching, unexplained rash and/or swelling, difficulty in breathing and/or swallowing, hives, and wheezing. Some other minor side effects include nausea, vomiting, heartburn, weakness, stomach cramps, confusion, blurred vision, constipation, etc. It is important never to overlook any unexplained changes in your health conditions to your health care provider, because the side effects could not be judged by him, beforehand. Cyclobenzaprine dosage is one thing that must also be left on the health care provider, any interference or changes must only be done with his approved knowledge. So that maximum of the risk factors could be avoided. Never forget medical intervention, before consuming any drug that you are half/unaware of. Take care and stay healthy! Disclaimer: This Buzzle article is for informative purposes only, and should not be used as a replacement for expert medical advice.