Flexeril (Cyclobenzaprine) 15 mg Tablets

Flexeril is the brand name most people recognize for cyclobenzaprine, an oral skeletal muscle relaxant prescribed alongside rest and physical therapy for acute, painful muscle spasm. We carry it as a 15 mg oral tablet, and this reference covers what it does, how cyclobenzaprine is typically dosed, and how to choose a pack size when you order from us.

What Flexeril Is and How It Works

Cyclobenzaprine acts in the central nervous system rather than directly on muscle tissue. It's structurally related to tricyclic antidepressants and reduces muscle spasm by dampening signals in the brainstem, not by blocking muscle contraction at the local level. This is why it commonly causes drowsiness alongside its muscle-relaxing effect. It's intended for short-term use, generally no more than two to three weeks, since acute musculoskeletal spasm is typically self-limiting and long-term data supporting extended use are lacking.

Essential Facts: Dosing and Effects

The established adult regimen depends on the release type. Immediate-release cyclobenzaprine is generally started at 5 mg three times daily and may be increased to 10 mg three times daily, with a maximum of 30 mg per day. Extended-release cyclobenzaprine products are generally taken as 15 mg once daily and may be increased to 30 mg once daily. A 15 mg strength alone does not establish that a product should be taken once daily, so follow the supplied labeling and your prescriber's directions. Cyclobenzaprine can generally be taken with or without food, though taking it with food may ease stomach upset.

The most frequently reported side effects are drowsiness, dry mouth, fatigue, and dizziness. Because sedation is additive with alcohol and other central nervous system depressants, combining cyclobenzaprine with sedatives, opioids, or alcohol increases the risk of excessive drowsiness. It should not be used during treatment with a monoamine oxidase inhibitor or within 14 days after stopping one. Caution is warranted with other serotonergic medications because of the risk of serotonin syndrome. Cyclobenzaprine is also contraindicated in people with hyperthyroidism, certain heart rhythm or conduction problems, heart failure, or a recent heart attack.

Available Strengths and Pack Sizes

We offer Flexeril exclusively as a 15 mg oral tablet, with package quantities ranging from 20 to 360 pills.

All package sizes contain the same 15 mg tablet; only the pill count changes. Select only the quantity recommended for you, keeping in mind that cyclobenzaprine is generally intended for short-term treatment.

Ordering, Safety Notes, and Storage

• Pregnancy: Labeling for cyclobenzaprine notes a lack of well-controlled studies in pregnant women, so use during pregnancy is an individual decision made with a prescriber.
• Breastfeeding: It isn't known whether cyclobenzaprine passes into breast milk, and because of its similarity to tricyclic antidepressants, caution is advised while nursing.
• Age: Safety and effectiveness haven't been established below age 15; patients age 15 and older should follow their prescriber's directions.
• Driving and machinery: Drowsiness and dizziness are common, so driving or operating machinery should be avoided until you know how it affects you.

Cyclobenzaprine is classified as a prescription medicine in the United States. We don't require you to submit a prescription to place an order, and our pharmacist-supported team is available 24/7 by email, chat, or phone if you have questions about dosing or interactions before you buy. We store our stock at 77°F, with excursions permitted between 59°F and 86°F, and we recommend keeping your tablets at room temperature away from moisture once they arrive.

If you're weighing alternatives, we also carry Tizanidine, a prescription muscle relaxant with a different mechanism and dosing pattern. You can also browse our Muscle Relaxants selection to compare available options.