Flexeril (cyclobenzaprine) is a short-term muscle relaxant commonly used to relieve muscle spasms after an injury or surgery. Doctors usually combine it with rest, physical therapy, and simple pain relief to speed recovery. It works on the central nervous system to reduce muscle tightness, not directly on the muscle itself. Most people feel less spasm and can move more easily within a few days.
Typical dosing for adults is 5 mg to 10 mg taken three times a day for up to two or three weeks. Your doctor will pick the dose based on how you respond and any other medicines you take. Do not double doses if you miss one. Stopping suddenly after long use can cause withdrawal-like symptoms, so follow your prescriber's plan.
Drowsiness, dry mouth, dizziness, and blurred vision are common with Flexeril. These effects can make driving or operating machinery unsafe until you know how the drug affects you. Serious issues are rare but include fast heart rate, severe confusion, hallucinations, or allergic reactions. Seek urgent care if you have chest pain, trouble breathing, fainting, or extreme confusion.
Flexeril interacts with many medicines. Do not take it with MAO inhibitors or within two weeks of stopping them — a dangerous reaction can occur. Combining with SSRIs, SNRIs, tricyclic antidepressants, or other sedatives increases the risk of drowsiness and serotonin-related problems. Avoid alcohol while taking Flexeril; it makes drowsiness worse. People with severe liver disease, heart rhythm problems, or uncontrolled hyperthyroidism should avoid cyclobenzaprine or use it only under close medical supervision. Older adults may be more sensitive to side effects and fall risk.
If you are pregnant or breastfeeding, talk with your provider. Data are limited, so the decision depends on how much benefit you need versus possible risk. Always tell your prescriber about all prescription drugs, over-the-counter meds, supplements, and herbal products you use.
Want a safer start? Try these practical tips: take the lowest effective dose, avoid alcohol, do not mix with other strong sedatives, and plan no driving until you know how you react. Use Flexeril as part of a plan that includes gentle stretching and a graded return to activity.
If pain or spasms continue beyond two to three weeks, or if side effects are troubling, ask your provider about alternatives like physical therapy, heat, topical analgesics, or different medications. Proper use lowers risk and helps you get moving again without unnecessary complications.
Flexeril is sold under the brand Flexeril and as generic cyclobenzaprine. It usually requires a prescription in most countries. Buy only from licensed pharmacies. Keep it in original container at room temperature away from kids and pets. Dispose of unused pills safely—ask pharmacist about take-back programs.
If you think you have overdose signs—severe drowsiness, rapid heartbeat, fainting—call emergency services. Keep a list of current meds to share with any provider. A short, planned course often helps pain and prevents long-term drug use. Ask questions whenever something feels unclear.
