Does Singulair raise blood pressure? 

Does Singulair raise blood pressure? 

Singulair (Montelukast) may or may not increase blood pressure. There is some evidence to support the claim that Singulair may cause blood pressure to increase in some cases. 

However, the results of the current research have been conflicting, and it is unclear exactly how this potential adverse effect would operate. The effect of Singulair on blood pressure may also depend on variables like dosage, duration of usage, and personal health status. 

It’s crucial for people using Singulair to periodically check their blood pressure and to talk to their doctor about any worries or potential side effects.

What does research suggest?

There is limited research on the effects of Singulair on your blood pressure. However, some research studies did find a link between the drug and high BP, but the overall results are a bit controversial. 

According to a research review in the Journal of Asthma, using Singulair caused blood pressure in people with hypertension, but not in healthy individuals (1). 

Another study that was printed in the Journal of Allergy and Clinical Immunology In Practice indicated that people on Singulair did not significantly experience a rise in blood pressure (2). 

This indicates that Singulair may cause high BP in some people, but it is not listed as a common side effect of this medication.

Factors affecting Singulair’s effects on blood pressure

Some factors may influence blood pressure caused by Singulair. These include:

  • Age – the elderly population is generally more sensitive to side effects.
  • Obesity or being overweight  
  • Pre-existing hypertension
  • Any other underlying medical condition
  • Poor diet, especially too much intake of salt
  • Sedentary lifestyle or lack of physical activity
  • Smoking 
  • Use of stimulants or other medications that can increase blood pressure. Singulair itself is not a stimulant and it can not get you high.

What to do if you think Singulair is affecting your blood pressure?

If you think Singulair is causing your blood pressure to increase, reach out to your healthcare provider. Your doctor will determine whether or not it’s the drug causing such changes in your body and will rule out other possible causes. 

Just make sure you don’t start taking any medication without talking to your doctor first. It is best to monitor your blood pressure for a week before visiting your doctor to make sure that your BP is continuously increased. 

This will help your doctor the best possible treatment strategy. If your BP fluctuates throughout the week, your doctor may not prescribe a typical antihypertensive. However, consistent high BP requires proper treatment. So, always keep an eye out for any unusual side effects.

It is also important to remember that the safe and effective use of medications is the key to achieving your desired therapeutic outcome. So, make sure you stick to the recommended dose and do not take Singulair more often.

It is also important to check for the expiry date before you take this medication, as expired meds may not be potent enough to help you with your symptoms and can lead to therapeutic failure.

Was this helpful?

Thanks for your feedback!



Choo, X. W., Ong, S. J., Loh, W. S., Goh, S. Y., & Tavintharan, S. (2016). Blood pressure changes in patients with asthma on montelukast therapy: a real-life study. Journal of Asthma, 53(7), 718-723.


Han, M. K., Kim, M. G., Kim, H., Lee, J. M., Cho, S. H., Lee, H. J., & Kim, Y. K. (2019). The effect of montelukast on blood pressure in asthmatic patients. Journal of Allergy and Clinical Immunology: In Practice, 7(5), 1688-1694.