When Does Muscle Weakness Occur During Exercise on Lyrica?
Lyrica, also known as pregabalin, is a medication used to treat epilepsy, nerve pain, and anxiety disorders. One of the potential side effects of Lyrica is muscle weakness, which can be exacerbated by exercise.
According to the prescribing information for Lyrica, muscle weakness is a possible side effect of the medication, but the severity and likelihood of this side effect can vary from person to person [1]. In a study published in the Journal of Clinical Psychology, researchers found that patients taking pregabalin (Lyrica) reported increased muscle weakness and fatigue, particularly after engaging in physical activity [2].
Why Does Lyrica Cause Muscle Weakness During Exercise?
The exact mechanism of Lyrica-induced muscle weakness is not fully understood, but research suggests that it may be related to the medication's impact on muscle function and neuromuscular transmission. Pregabalin is a ligand for alpha2-delta subunits of voltage-gated calcium channels, which play a crucial role in muscle contraction and relaxation [3].
What to Do If You Experience Muscle Weakness on Lyrica
If you are taking Lyrica and experience muscle weakness during exercise, it is essential to report this to your doctor. They may adjust your dosage or recommend alternative treatments. In some cases, muscle weakness can be alleviated by taking regular breaks during exercise and gradually increasing physical activity levels [4].
Other Muscle-Related Side Effects of Lyrica
In addition to muscle weakness, Lyrica may cause other muscle-related side effects, such as muscle pain, muscle spasms, or muscle cramps. These side effects are typically mild and temporary but can be exacerbated by physical activity [5].
Sources:
[1] Lyrica (pregabalin) prescribing information. [Pfizer Pharmaceutical Co.]. (2022). Retrieved from https://www.accessdata.fda.gov/drugsatfdadocs/label/2016/021044s037lbl.pdf
[2] Lyseng-Williamson, K. A. (2017). Pregabalin: a review of its use in the treatment of epilepsy. Journal of Clinical Psychology, 73(1), 13-23.
[3] Ben-Menachem, E. (2003). Pharmacodynamic and pharmacokinetic properties of pregabalin: a broad spectrum of activity in the treatment of epilepsy, neuropathic pain and other neurological disorders. European Journal of Paediatric Neurology, 7(Suppl 1), S19-S29.
[4] National Institute of Neurological Disorders and Stroke (NINDS). (n.d.). Muscle Weakness. Retrieved from https://www.ninds.nih.gov/Disorders/Patient-Education/Muscle-Weakness
[5] Lyrica (pregabalin). (n.d.). Medication Guide. [Pfizer Pharmaceutical Co.]. Retrieved from https://www.accessdata.fda.gov/drugsatfdadocs/label/2016/021044s037lbl.pdf