Adverse reactions attributed to entire drug class 'HMG-CoA reductase inhibitor / statin' Statins: very infrequent reports of myasthenia gravis
Advice from the Medicines and Healthcare products Regulatory Agency (MHRA) UK, September 2023
Globally, there has been a very small number of reports of new-onset or aggravation of pre-existing myasthenia gravis with atorvastatin, pravastatin, lovastatin, fluvastatin, simvastatin, rosuvastatin and pitavastatin (single-ingredient and fixed-dose combination products). Advise patients taking statins to be alert to new symptoms for myasthenia gravis, or worsening symptoms of pre-existing myasthenia gravis, and to seek medical advice if these occur.
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Skin[2 reactions] Central Nervous System[4 reactions]
Cognitive impairment
(2019): Tan B+, Expert Rev Clin Pharmacol Apr , Epub ahead of print [REVIEW]Neurological adverse effect / neurological deficit
(2024): Li J+, Endocr Metab Immune Disord Drug Targets Oct , Online ahead of print (association) (pharmacovigilance / pharmacoepidemiology) Neuromyopathy
Neuropsychiatric / neuropsychological adverse effect
Endocrine/Metabolic[1 reaction]
Diabetes mellitus (includes type 1 and type 2 diabetes mellitus)
(2025): Zheng D+, Curr Pharm Des Sep , Online ahead of print [REVIEW] (association) (pharmacovigilance / pharmacoepidemiology) Gastrointestinal/Hepatic[3 reactions] Genitourinary[1 reaction] Neuromuscular/Skeletal[5 reactions]
Myalgia/Myositis/Myopathy/Myotoxicity
(2026): Stäuble CK+, Eur J Clin Pharmacol 82(3) , 85 (drug interaction) (pharmacovigilance / pharmacoepidemiology) (2025): Alshammari AS+, Ther Clin Risk Manag 21 , 861-867 (association; with ticagrelor) (drug interaction)(2025): Oni-Orisan A+, Pharmacoepidemiol Drug Saf 34(11) , e70240(2025): Prieto-Peña D+, Int J Mol Sci 26(22) , 11144 (pharmacogenomics) (2025): Sridharan K+, Curr Rev Clin Exp Pharmacol Mar , Online ahead of print [REVIEW] (pharmacogenomics) (2023): Wei C+, J Clin Med 12(10) , 3548 (with daptomycin; association)(2023): Yow HY+, Asian Biomed (Res Rev News) 17(3) , 95-114 [REVIEW] (pharmacogenomics) (2021): Alzueta N+, Eur J Hosp Pharm 28(2) , 115-117 (1 case)(2020): Kee PS+, Front Genet (e-Collection) (pharmacogenomics) (2020): Nikolic D+, Expert Opin Drug Saf Apr , Epub ahead of print [REVIEW](2018): Kosinski C+, Rev Med Suisse (French) 14(596) , 462 [REVIEW](2017): Millan J+, Clin Investig Arterioscler (Spanish) 29(1) , 778% (2017): Nazir S+, J Clin Rheumatol 23(3) , 149 [REVIEW] (autoimmune myopathy)(2014): Jiang Y+, Zhonghua Xin Xue Guan Bing Za Zhi (Chinese) 42(11) , 905(2013): Mohassel P+, Muscle Nerve 48(4) , 477 [REVIEW] (autoimmune myopathy)(2011): Abd TT+, Expert Opin Drug Saf 10(3) , 373 [REVIEW]Myasthenia gravis
(2023): Drug Ther Bull 62(1) , 4, Online ahead of printNecrotizing myopathy (includes Statin-induced necrotizing autoimmune myopathy)
(2022): Ganta N+, Cureus 14(2) , e22273 (1 case / male)(2022): Somagutta MKR+, Reumatologia 60(1) , 63-69 [REVIEW](2021): Fidalgo C+, Acta Med Port Sep , Online ahead of print (2 cases)(2020): Huda SA+, Proc (Bayl Univ Med Cent) 34(1) , 185-186 (1 case / male)(2020): Meyer A+, Arthritis Res Ther 22(1) , 5 (55 cases)(2017): Tiniakou E+, Curr Opin Rheumatol 29(6) , 604-611 [REVIEW](2013): Hamann PD+, Autoimmun Rev 12(12) , 1177-81 [REVIEW]Rhabdomyolysis
Statin-associated muscle symptoms
Ocular[2 reactions] Other[1 reaction]
Adverse effects / adverse reactions
(2026): Zeng Y+, Expert Opin Drug Saf Apr , Online ahead of print [REVIEW] (pharmacovigilance / pharmacoepidemiology) (2025): Lee DH+, Cardiovasc Toxicol Aug , Online ahead of print [REVIEW] (pharmacogenomics) (2025): Maruyama H+, Ther Innov Regul Sci Dec , Online ahead of print [REVIEW] (pharmacovigilance / pharmacoepidemiology) (2021): Lin JL+, J Atheroscler Thromb Sep , Online ahead of print(2021): Yee J+, J Pers Med 11(7) , 677 [REVIEW] (pharmacogenomics) (2020): Conte C+, Fundam Clin Pharmacol Feb , Epub ahead of print [REVIEW](2020): Mulchandani R+, Expert Opin Drug Saf Jul , Online ahead of print [REVIEW](2020): Thomas JP+, Eur J Clin Pharmacol Jul , Online ahead of print [REVIEW](2019): Bae HJ+, Korean J Intern Med Aug , Epub ahead of print12% (2018): Bellosta S+, Expert Opin Drug Saf 17(1) , 25 [REVIEW] (from drug interactions)(2017): Atonstad S, Tidsskr Nor Laegeforen (Norwegian) 137(1) , 36(2015): de Keyser CE+, Eur J Endocrinol 173(2) , 155 (low testosterone levels in males)(2014): Berta E+, Pharmazie 69(6) , 42024% (gastrointestinal)(2014): Desai CS+, BMJ 349 , g3743 [REVIEW]Negative findings (2026): Lancet Feb (e-Collection) [REVIEW]