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Lipitor Sleep Architecture Impact: What Atorvastatin Does to Your Sleep

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At a glance

  • Drug / atorvastatin (Lipitor), an HMG-CoA reductase inhibitor (statin) [1]
  • Insomnia in label trials / 3.0% with atorvastatin vs 2.9% with placebo [1]
  • Nightmares / listed among other adverse reactions, no rate given [1]
  • Sleep-stage measurements in the label / none reported [1]
  • Dosing time / once daily, any time of day, with or without food [1]
  • Evening vs morning dosing / about 30% lower Cmax and AUC in the evening, same LDL-C reduction [1]
  • First-line treatment for chronic insomnia / cognitive behavioral therapy for insomnia (CBT-I) [2]

Does atorvastatin cause insomnia?

The label gives the clearest number available. Across 17 placebo-controlled trials — 8,755 people taking atorvastatin at any dose and 7,311 taking placebo, median 53 weeks — insomnia was reported by 3.0% and 2.9% respectively [1]. Insomnia was not among the adverse reactions that most often led to discontinuation. The label lists myalgia (0.7%), diarrhea (0.5%), nausea (0.4%), alanine aminotransferase increase (0.4%) and hepatic enzyme increase (0.4%) as reactions that led to discontinuation at rates greater than placebo [1].

What the label says about nightmares and vivid dreams

Nightmare appears once, in a list of other adverse reactions reported in placebo-controlled trials under Nervous System [1]. That list carries no rates, so the label shows nightmares were reported during atorvastatin trials but gives no frequency and no comparison with placebo [1].

Does atorvastatin change sleep architecture?

Sleep architecture — the share of the night spent in N1, N2, N3 slow-wave sleep and REM — is measured in a sleep lab with polysomnography. The Lipitor label reports no such measurements; the sleep-related items in its adverse reaction listings are insomnia in the adverse reaction table and nightmare in the other-reactions list [1]. There are therefore no figures here for slow-wave minutes, REM time or wake after sleep onset.

Does the time of day you take it matter for sleep?

The label directs atorvastatin once daily at any time of day, with or without food, and states that evening dosing produces about 30% lower peak concentration (Cmax) and total exposure (AUC) than morning dosing while LDL-C reduction is the same at any time of day [1]. Peak plasma concentration occurs within 1 to 2 hours of a dose [1].

Does lipophilicity mean atorvastatin reaches the brain and alters sleep?

Atorvastatin is one of the relatively lipophilic statins, while pravastatin and rosuvastatin are relatively hydrophilic, are not significantly metabolized by cytochrome P450 enzymes and show greater hepatoselectivity with less uptake into peripheral cells [3]. Lipophilic statins are also more susceptible to CYP450 metabolism [3]. The review's abstract describes solubility, metabolism and hepatic uptake; it does not mention brain penetration or sleep [3].

Frequently asked questions

Does atorvastatin cause insomnia?
In the Lipitor label's 17 placebo-controlled trials, insomnia was reported by 3.0% of people taking atorvastatin (n=8,755) and 2.9% of those on placebo (n=7,311) over a median of 53 weeks [1].
Can atorvastatin cause nightmares?
Nightmare is listed among the other adverse reactions reported in placebo-controlled trials, a list the label gives without rates, so how often it happens and how that compares with placebo is not stated [1].
Does atorvastatin reduce slow-wave or REM sleep?
The label reports no measurements of sleep stages for atorvastatin. Its adverse reaction listings include insomnia in the table and nightmare in the list of other reactions [1].
Is atorvastatin better taken in the morning or at night for sleep?
The label says to take it once daily at any time of day, with or without food. Evening dosing gives about 30% lower Cmax and AUC than morning dosing, but LDL-C reduction is the same at any time of day [1].
What treats ongoing insomnia?
The American College of Physicians recommends cognitive behavioral therapy for insomnia as the initial treatment for chronic insomnia disorder, with medication added through shared decision-making if CBT-I alone does not work [2].

References

  1. U.S. National Library of Medicine, DailyMed. Lipitor atorvastatin calcium tablets (Viatris Specialty) prescribing information. Lipitor atorvastatin calcium tablets (Viatris Specialty) label
  2. Qaseem A, Kansagara D, Forciea MA, Cooke M, Denberg TD, Clinical Guidelines Committee of the American College of Physicians. Management of Chronic Insomnia Disorder in Adults: A Clinical Practice Guideline From the American College of Physicians. Ann Intern Med. 2016;165(2):125-33. Management of Chronic Insomnia Disorder in Adults: A Clinical Practice Guideline From the American College of Physicians
  3. Schachter M. Chemical, pharmacokinetic and pharmacodynamic properties of statins: an update. Fundam Clin Pharmacol. 2005;19(1):117-25. Chemical, pharmacokinetic and pharmacodynamic properties of statins: an update
Evidence overview for Lipitor Sleep Architecture Impact: What Atorvastatin Does to Your Sleep