Can BOTOX® cause extreme tiredness? 

Can BOTOX® cause extreme tiredness? 

BOTOX ® may cause tiredness in some people, especially those who are new to it and just have had their first injection. Although it is not considered a common side effect in long-term users, new users may complain about it sometimes. 

After the first injection of BOTOX ®, flu-like symptoms are also common including fever, body pain, and tiredness (1). However, Botox takes some time to work and these side effects begin to fade away within a week or two as your body adjusts. 

What does scientific research say about BOTOX® injections and tiredness?

A 2010, review of case reports indicated that BOTOX® can cause systemic fatigue in some people. Muscle weakness at the site of injection is a common thing with BOTOX ® injections, as the drug paralyses the target muscles and this is its primary mechanism of action (2). 

However, the study indicated that BOTOX® can cause muscle weakness distant from the site of drug administration, which contributes to tiredness (2).

A 2014 study published in the Journal of Cosmetic Dermatology found that patients who received BOTOX ® injections for cosmetic purposes reported more fatigue than those who received a placebo injection (3). 

The study authors suggested that BOTOX® may affect muscle activity and contribute to muscle fatigue. However, BOTOX ® does not affect everyone in the exact same way. 

Should you be concerned about tiredness caused by BOTOX®? 

BOTOX®-induced tiredness during the early course of your treatment shouldn’t be a side effect of concern. However, it is not supposed to stay. 

The first few BOTOX® injections may cause symptoms related to upper respiratory tract infection, but again they fade away as well. Temporary side effects shouldn’t worry you and you should give your body some time to adjust. 

Other factors that may contribute to BOTOX®-related fatigue

There are several other factors that may contribute to BOTOX®-related fatigue, including:

  • The site of the injection may trigger fatigue on BOTOX®. These injections in certain areas, such as the forehead or around the eyes, may cause more strain on the muscles and lead to greater fatigue.
  • Higher doses of BOTOX® may cause greater muscle weakness, which can lead to fatigue.
  • Different people may react to BOTOX® differently, depending on their age, overall health, and the severity of the symptoms being treated.
  • Some underlying medical conditions, such as anaemia, hypothyroidism, or sleep apnea, can cause fatigue and may be exacerbated by BOTOX® injections.
  • Certain medications, such as muscle relaxants or antihistamines, may interact with BOTOX ® injections and contribute to fatigue.

What to do if BOTOX® continues to make you feel tired?

If BOTOX® continues to make you tired or you experience unusual side effects – you should talk to your healthcare provider. 

Although BOTOX® is not likely to cause unbearable side effects, people are different and they can respond to BOTOX® differently. If the injections affect your health significantly, they should not be continued. 

References

  1. Mayo Clinic. Botox Injections [Internet]. Mayo Clinic; [cited 2023 Jan 05]. Available from: https://www.mayoclinic.org/tests-procedures/botox/about/pac-20384658.
  2. Crowner BE, Torres-Russotto D, Carter AR, Racette BA. Systemic weakness after therapeutic injections of botulinum toxin a: a case series and review of the literature. Clinical neuropharmacology. 2010 Sep;33(5):243. https://pubmed.ncbi.nlm.nih.gov/20852412/ 
  3. Goldman ND, Dorton LH, Marcum KK, Gilbert RM, Sandoval LF. Evaluation of headache relief with cosmetic onabotulinumtoxinA injections. Journal of Cosmetic Dermatology. 2014 Sep;13(3):224-31. https://pubmed.ncbi.nlm.nih.gov/25196690/ 

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References

1.-

Mayo Clinic. Botox Injections [Internet]. Mayo Clinic; [cited 2023 Jan 05]. Available from: https://www.mayoclinic.org/tests-procedures/botox/about/pac-20384658.

2.-

Crowner BE, Torres-Russotto D, Carter AR, Racette BA. Systemic weakness after therapeutic injections of botulinum toxin a: a case series and review of the literature. Clin Neuropharmacol. 2010 Sep-Oct;33(5):243-7. doi: 10.1097/WNF.0b013e3181f5329e. PMID: 20852412; PMCID: PMC3563356. Available from: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3563356/