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Dextromethorphan Information

Dextromethorphan is a prescription medicine. Cough are some of its major therapeutic uses. Dextromethorphan also has some secondary and off-label uses. These are listed below.

The right dosage of Dextromethorphan depends on the age, gender, and medical history of the patient. The condition it has been prescribed for, and the route of administration also determine the right dosage. This information has been provided in detail in the dosage section.

Besides the aforementioned side effects, there are other adverse effects of Dextromethorphan as well, which are listed below. Usually, these side effects of Dextromethorphan go away soon, and do not persist beyond the duration of the treatment. Please speak with your doctor if these side effects worsen or persist for a longer duration.

In addition, Dextromethorphan's effect is Severe during pregnancy and Severe for lactating mothers. Further, the section on Dextromethorphan related warnings talks about Dextromethorphan's effects on the liver, heart and kidney.

The section on Dextromethorphan contraindications lists all such conditions.

Additionally, Dextromethorphan may also adversely react with other medicines. Refer to the list below for further details.

You should also be aware that Dextromethorphan is not safe while driving, and is not addiction.

  1. Dextromethorphan Benefits & Uses
  2. Dextromethorphan Dosage & How to Take
  3. Dextromethorphan Side Effects
  4. Dextromethorphan Related Warnings
  5. Severe Interaction of Dextromethorphan with Other Drugs
  6. Dextromethorphan Contraindications
  7. Frequently asked Questions about Dextromethorphan
  8. Dextromethorphan Interactions with Food and Alcohol

Dextromethorphan Benefits & Uses

Dextromethorphan is used to treat the following -

  1. Cough Primary
  2. Dry Cough

Dextromethorphan Dosage & How to Take

Find the right dosage based on disease and age

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Ingredients of Dextromethorphan


Dextromethorphan Side Effects

Based on research, the following side effects have been observed when Dextromethorphan is used -

  1. Nausea or vomiting
  2. Nervousness
  3. Drowsiness
  4. Dizziness Mild
  5. Lightheadedness
  6. Restlessness
  7. Stomach ache Mild
  8. Confusion
  9. Headache Mild
  10. Hallucinations
  11. Rash
  12. Difficulty breathing
  13. Joint pain
  14. Facial swelling
  15. Tachycardia

Dextromethorphan Related Warnings

Is the use of Dextromethorphan safe for pregnant women?

Dextromethorphan should not be taken during pregnancy, or should only be taken on the advice of a doctor as it may have severe side effects.


Is the use of Dextromethorphan safe during breastfeeding?

Dextromethorphan may cause serious side effects in breastfeeding women, so do not take this drug without doctor's advice.


What is the effect of Dextromethorphan on the Kidneys?

Dextromethorphan may cause harmful effects on kidney. if you feel its having any such effect, then stop taking this drug, and restart only on your doctor's advice.


What is the effect of Dextromethorphan on the Liver?

Very few cases of side effects of Dextromethorphan on the liver have been reported.


What is the effect of Dextromethorphan on the Heart?

Very few cases of side effects of Dextromethorphan on the heart have been reported.


Severe Interaction of Dextromethorphan with Other Drugs

Dextromethorphan should not be taken with following medicines due to severe side effects it may cause to patients -

Dextromethorphan Contraindications

If you are suffering from any of the following diseases, you should not take Dextromethorphan unless your doctor advises you to do so -

  1. Depression
  2. Parkinson's Disease
  3. Asthma
  4. Heart Disease
  5. Kidney Cancer
  6. Liver Disease

Frequently asked Questions about Dextromethorphan

Is this Dextromethorphan habit forming or addictive?

Yes, Dextromethorphan cause dependence in some cases. Talk to your doctor before taking it.


Is it safe to drive or operate heavy machinery when consuming?

After taking Dextromethorphan you may feel sleepy. So it is not advised to perform these activities.


Is it safe?

Yes, but consume Dextromethorphan only on doctor's advice.

Safe, but take only on Doctor's advise

Is it able to treat mental disorders?

There is no benefit of taking Dextromethorphan for mental disorders.


Dextromethorphan Interactions with Food and Alcohol

Interaction between Food and Dextromethorphan

There isn't any research available on the side effects of taking Dextromethorphan with food.


Interaction between Alcohol and Dextromethorphan

Consult your doctor before consuming alcohol while taking Dextromethorphan as it can have severe side effects.


Dextromethorphan FAQs

Question almost 2 years ago

Can Dextromethorphan cause anxiety?

Dr. Amit Singh MBBS , General Physician

Yes, Dextromethorphan may cause anxiety. Anxiety is a group of mental disorder characterized by excessive fear and feels nervousness. Sudden discontinuation of this drug after long-term usage in high doses may cause anxiety. However, if you experience anxiety after taking this drug then discuss it with your doctor immediately without further delay.

Question over 1 year ago

How long can I use Dextromethorphan?

Dr. Saurabh Dhamdhere MBBS , Orthopedics

You should use Dextromethorphan for as long as it is prescribed by your doctor or till you feel a relief in your symptoms. Dextromethorphan is a prescription drug, and it is best to take it under medical supervision.

Question over 1 year ago

Can I discontinue Dextromethorphan on my own

Dr. Mayank Yadav MBBS , General Physician

Yes, you may discontinue taking Dextromethorphan on your own when you feel that a cough has subsided. However, if the symptoms do not improve even after taking Dextromethorphan for about 7 days, consult a doctor immediately.

Question about 2 years ago

How to take Dextromethorphan?

Dr. Rajeev Kumar Ranjan MBBS , Pulmonology

Dextromethorphan is available in the form of tablet, syrup, and lozenge. The tablet should be swallowed with water, the syrup should be taken with a measuring spoon or a container and lozenge should be allowed to melt inside the mouth. Dextromethorphan is taken every 4 to 12 hours as per the requirement. It is important to read the label carefully and follow the instructions completely. If you are giving Dextromethorphan to a child then make sure it is not given to a child younger than 4 years old. Also, make sure that you are using a brand that is exclusively for children. Be very careful while administering more than one type of drug to the child because if there is a common ingredient in more than one drug then it could lead to overdose. It is suitable to take Dextromethorphan under the guidance of a doctor or a pharmacist. It is also important to talk to your doctor if the symptoms do not improve in 7 days.

Question almost 2 years ago

Is Dextromethorphan a steroid?

Dr. Sameer Awadhiya MBBS , Pediatrics

No, Dextromethorphan is not a steroid. It is related to codeine and is a non-opioid derivative of morphine. It is an antitussive which is used for managing the dry cough. 

This medicine data has been created by -
Vikas Chauhan
B.Pharma, Pharmacy
3 Years of Experience


  1. April Hazard Vallerand, Cynthia A. Sanoski. [link]. Sixteenth Edition. Philadelphia, China: F. A. Davis Company; 2019: Page No 422-423
  2. KD Tripathi. [link]. Seventh Edition. New Delhi, India: Jaypee Brothers Medical Publishers; 2013: Page No 220
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