Does Methocarbamol contain Aspirin? 

Does Methocarbamol contain Aspirin? 

No, Methocarbamol does not contain Aspirin. They are two different drugs which work differently and belong to different classes. However, Methocarbamol and Aspirin are available in a combined form under the brand name Robaxisal. 

This combination medication is used for the management and treatment of pain associated with muscle spasms. 

Role of Methocarbamol in Robaxisal

Methocarbamol in this formulation works as a muscle relaxant and helps control the involuntary muscular contraction that causes pain and stiffness(1)

The exact mechanism through which Methocarbamol works is not fully known yet, but the drug most probably blocks the involuntary movement of muscles through your brain rather than directly working on the spastic muscle. 

Role of Aspirin in Robaxisal

Aspirin in this formulation works as a pain reliever. It basically inhibits the synthesis of Prostaglandins, which are important mediators of pain and inflammation(2)

This way, your muscle stops contracting uncontrollably with the help of the muscle relaxant, while Aspirin manages the pain. 

What are the side effects caused by Robaxisal (Methocarbamol + Aspirin)? 

Robaxisal is commonly associated with the following side effects(3):

  • Nausea 
  • Vomiting 
  • Dizziness 
  • Abdominal pain 
  • Lightheadedness 
  • Upset stomach 
  • Acid reflux 
  • Blurry vision 

This medication is also associated with some serious and rare side effects, including:

  • An allergic reaction 
  • Easy bruising
  • Dark coloured urine
  • Symptoms of kidney problems 
  • Difficulty in hearing
  • Irregular heartbeat 
  • Excessive weakness 
  • Mood changes 
  • Blackouts 

Make sure you reach out to your healthcare provider right away if you experience any serious side effects of Robaxisal. Not every medication works for everyone. 

However, Robaxisal is still pretty well tolerated. The most common side effects are gastrointestinal, which may get better if you take this medication with food.

Methocarbamol and Aspirin are available as separate formulations as well. Aspirin is also available as chewable tablets for people who can’t swallow the tablets whole.

However, you need to be careful with such formulations and make sure you do not swallow chewable tablets. If you’re concerned about anything, talk to your doctor or pharmacist. 

Was this helpful?

Thanks for your feedback!

References

1.-

PubChem [Internet]. Bethesda (MD): National Library of Medicine (US), National Center for Biotechnology Information; 2004-. PubChem Compound Summary for CID 4107, Methocarbamol; [cited 2023 Mar. 03]. Available from: https://pubchem.ncbi.nlm.nih.gov/compound/Methocarbamol

2.-

PubChem [Internet]. Bethesda (MD): National Library of Medicine (US), National Center for Biotechnology Information; 2004-. PubChem Compound Summary for CID 2244, Aspirin; [cited 2023 Mar. 03]. Available from: https://pubchem.ncbi.nlm.nih.gov/compound/Aspirin

3.-

Robaxisal Oral: Uses, Side Effects, Interactions, Pictures, Warnings & Dosing. WebMD, WebMD LLC, 2022, [cited 2023 Mar. 03]. Available from: https://www.webmd.com/drugs/2/drug-15852/robaxisal-oral/details.