Flexeril (cyclobenzaprine) is a muscle relaxant. It works by blocking nerve impulses (or pain sensations) that are sent to your brain.
Flexeril is used together with rest and physical therapy to treat skeletal muscle conditions such as pain or injury.
Flexeril may also be used for other purposes not listed in this medication guide.
Cyclobenzaprine hydrochloride is a white, crystalline tricyclic amine salt with the empirical formula C20H21N•HCl and a molecular weight of 311.9. It has a melting point of 217°C, and a pKa of 8.47 at 25°C. It is freely soluble in water and alcohol, sparingly soluble in isopropanol, and insoluble inhydrocarbon solvents. If aqueous solutions are made alkaline, the free base separates. Cyclobenzaprine HCl is designated chemically as 3-(5H -dibenzo[a,d] cyclohepten-5ylidene)-N, N-dimethyl-1-propanamine hydrochloride, and has the following structural formula:
FLEXERIL 5 mg (Cyclobenzaprine HCl) is supplied as a 5 mg tablet for oral administration.
FLEXERIL 10 mg (Cyclobenzaprine HCl) is supplied as a 10 mg tablet for oral administration.
FLEXERIL 5 mg (Cyclobenzaprine HCl) tablets contain the following inactive ingredients: lactose hydrous, pre-gelatinized starch, corn starch, magnesium stearate, hydroxypropyl cellulose, hypromellose, titanium dioxide, Yellow D&C #10 Aluminum Lake HT, Yellow FD&C #6 Aluminum Lake, and carnauba wax.
FLEXERIL 10 mg (Cyclobenzaprine HCl) tablets contain the following inactive ingredients: lactose hydrous, pre-gelatinized starch, corn starch, magnesium stearate, hydroxypropyl cellulose, hypromellose, titanium dioxide, yellow iron oxide, and carnauba wax.
Description and Brand Names
US Brand Name
- FusePaq Tabradol
Cyclobenzaprine is used to help relax certain muscles in your body. It helps relieve pain, stiffness, and discomfort caused by strains, sprains, or injuries to your muscles. However, this medicine does not take the place of rest, exercise or physical therapy, or other treatment that your doctor may recommend for your medical problem. Cyclobenzaprine acts on the central nervous system (CNS) to produce its muscle relaxant effects. Its actions on the CNS may also cause some of this medicine’s side effects.
This medicine is available only with your doctor’s prescription.
This product is available in the following dosage forms:
- Capsule, Extended Release