Dan 5513 is a muscle relaxer that blocks pain sensation between the brain & nerves. It is helpful in the treatment of muscle spasm & belongs to a class of drugs called skeletal muscle relaxants.

Dan 5513, supplied by Watson pharmaceuticals, is white, round & is branded as Carisoprodol 350 mg. Carisoprodol is classified as a schedule IV controlled substance under the Controlled Substance Act (Yardley, L., 2018).

Dan 5513 Uses & Mechanism of Action

Dan 5513, along with rest & physical therapy, provides ease in treating skeletal muscle conditions like pain & injury. It is used for the short term to treat muscle pain & discomfort.

The muscle relaxation effects of the drug in animal studies are associated with altered interneuronal activity and descending reticular formation. The exact mechanism of Dan 5513 in relieving pain associated with acute musculoskeletal conditions has not been identified.

Dan 5513 has a quick onset of action, usually 1-2 hours after oral ingestion of 250 or 350 mg tablet. The elimination half-life is 1.7 to 2 hours, while the Carisoprodol half-life is about 10 hours. It takes approximately 3.6 to 4.5 hours for maximum plasma concentration.


Dosage forms & strength for muscle pain:

Tablet: Schedule IV

  • 250mg
  • 350mg

Adult’s dosage (18 to 64 years): 250/350 mg, thrice a day & the maximum dose should not increase 1400mg/day.

Children's dosage (up to 16 years): The use of Dan 5513 should be avoided in children of this age group as it is not recommended by FDA.

Senior dosage (65 years & older): The use of this medication hasn’t be studied in adults older than 65 years. It is not recommended to be used in people of this group.

For individuals who have short-term and acute conditions, this drug can be a great way to alleviate their pain. Dan 5513 should be used only for short period for about 2 to 3 weeks as it has the potential of being abuse. To avoid withdrawal symptoms, Dan 5513 should be stopped gradually if used for long term.

Side effects of Dan 5513

Some of the common side effects includes:

  • Drowsiness
  • Dizziness
  • Agitation
  • Headache
  • Nervousness
  • Irritability
  • Inability to sleep
  • Seizures
  • Depression

Mild effects may go away within a few days or couple of weeks. Severe symptoms, however, should be addressed by the doctor to ensure proper treatment.

Some of the severe side effects includes:

Heart problems, symptoms may include

  • Fast heartbeat
  • Low blood pressure
  • Flushing of the face

Nervous system problems, symptoms may include

  • Feeling agitated or irritated
  • Depression
  • Seizures
  • Shakiness

Stomach problems, symptoms may include

  • Nausea
  • Vomiting
  • Pain in abdomen

Warnings & Precautions


  • Avoid taking Dan 5513 if you have porphyria.
  • The drug may be habit-forming. Misuse of the medication can cause addiction, overdose, or death. 
  • Avoid alcohol, as it can increase drowsiness & dizziness caused by this medicine. 
  • Be careful while driving, as the drug can cause side effects that may impair your thinking or reactions.
  • These medications is not recommended for children younger than 17 years & older adults of 65 years of age.


Before taking Carisoprodol, consult with our healthcare physician if you are allergic to meprobamate, tybamate, or mebutamate or if you have any other allergies. The active ingredients in Dan 5531 can cause allergic reactions.

The drug may make you feel dizzy or drowsy. Alcohol or marijuana can make you feel more drowsy and dizzy.

Before having surgery, inform your healthcare associate or dentist about all the products you are using.

Dan 5513 can be helpful for some older adults; it may produce unwanted side effects. These include drowsiness or confusion, which increases their risk of falling while taking this medication!


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