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用于 不宁腿综合征

A

基于65项研究(5项荟萃分析),共24,923名参与者。34/65项研究显示积极效果。

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A

结论

Iron supplementation is well-supported by research for reducing restless leg syndrome symptoms, especially in people with confirmed iron deficiency.

  • 65 studies with nearly 25,000 participants — one of the most studied supplement-condition pairs
  • A 2025 meta-analysis confirmed the efficacy and safety of iron for RLS
  • Iron deficiency is a recognized major risk factor for restless leg syndrome
  • IV iron (ferric carboxymaltose) shows particularly strong results in clinical trials

Key Study Findings

review
[Restless leg syndrome. Diagnosis and treatment].
Dose: various vs: Placebo 效果: None None
case-control n=90
Restless Leg Syndrome and Association with Serum NT Pro-CNP.
Dose: None vs: Placebo 效果: NT pro-CNP significantly lower in RLS vs controls; sensitivity 80%, specificity 88.9%; serum iron lo None
Cohort Study n=58 Open-label
Efficacy and safety of intravenous iron in patients with restless legs syndrome with normal serum …
Dose: 1000 mg ferric carboxymaltose vs: Group A (ferritin <100) vs Group B (ferritin 100-300) Outcome: IRLS severity scale score change 效果: None None

研究人群: RLS patients with serum ferritin <300 µg/L

review
Restless Leg Syndrome and Pregnancy.
Dose: iron supplementation, folate, dopamine agonists (non-pharmacological and pharmacological) vs: Placebo 效果: None None
review
[Restless Legs Syndrome].
Dose: dopamine agonists, iron supplementation, alpha-2-delta ligands vs: Placebo 效果: None None

Key Statistics

173

研究数量

36638

受试者

Mixed

A

等级

Referenced Papers

Revista de neurologia None 8 次引用
Handbook of clinical … 2025
Southern medical journal 2025
Brain and nerve … 2025
Sleep medicine reviews 2024 6 次引用
Tremor and other … 2023 32 次引用
Sleep medicine clinics 2023 14 次引用
Continuum (Minneapolis, Minn.) 2023 2 次引用
Australian journal of … 2023
Experimental neurology 2022 36 次引用
Antioxidants (Basel, Switzerland) 2022 13 次引用
MMW Fortschritte der … 2022 1 次引用
Nature reviews. Disease … 2021 163 次引用
Neurotherapeutics : the … 2021 162 次引用
Current neuropharmacology 2021 13 次引用
Sleep medicine clinics 2021 11 次引用
Sleep medicine clinics 2021 9 次引用
The International journal … 2021 6 次引用
Sleep medicine clinics 2021 5 次引用
International journal of … 2020 34 次引用
Continuum (Minneapolis, Minn.) 2020 17 次引用
La Revue de … 2020 3 次引用
Der Nervenarzt 2020 2 次引用
The lancet. Diabetes … 2020 2 次引用
The Neuroscientist : … 2019 120 次引用
Current neurology and … 2019 68 次引用
The Cochrane database … 2019 62 次引用
Sleep medicine reviews 2019 47 次引用
Advances in pharmacology … 2019 27 次引用
Advances in pharmacology … 2019 20 次引用
Advances in pharmacology … 2019 3 次引用
Advances in pharmacology … 2019 2 次引用
The Lancet. Neurology 2018 202 次引用
International review of … 2018 24 次引用
Revue neurologique 2018 11 次引用
Pediatric annals 2018 5 次引用
Missouri medicine 2018
Sleep medicine 2017 95 次引用
FP essentials 2017 11 次引用
Clinical medicine (London, … 2016 44 次引用
Acta dermatovenerologica Croatica … 2016 6 次引用
Wiener medizinische Wochenschrift … 2016 2 次引用
Biometals : an … 2016
Sleep medicine clinics 2015 158 次引用
Sleep medicine reviews 2015 38 次引用
Sleep medicine clinics 2015 29 次引用
Critical care clinics 2015 28 次引用
Movement disorders : … 2015
Parkinsonism & related … 2014 78 次引用
Handbook of clinical … 2014 52 次引用
Nephro-urology monthly 2014 43 次引用
The Cochrane database … 2012 31 次引用
Expert opinion on … 2012 6 次引用
American family physician 2012
Indian journal of … 2011 75 次引用
Handbook of clinical … 2011 8 次引用
Current opinion in … 2010
Journal of internal … 2009 125 次引用
Brain and nerve … 2009
The Israel Medical … 2008 61 次引用
Acta medica portuguesa 2008
American family physician 2008
The Nurse practitioner 2008
American journal of … 2007 61 次引用
The British journal … 2006 29 次引用
American journal of … 2006 23 次引用
Sleep medicine 2006 8 次引用
The Lancet. Neurology 2005 215 次引用
Progress in neurobiology 2005 47 次引用
Current neurology and … 2005 15 次引用
Neurologic clinics 2005 13 次引用
Primary care 2005 2 次引用
Current opinion in … 2005
Neurology 2004 386 次引用
Annals of neurology 2004 183 次引用
Sleep medicine reviews 2001 48 次引用
The Journal of … 2001 7 次引用
Mayo Clinic proceedings 1997 30 次引用
The American Journal … 1996 1 次引用
Mayo Clinic proceedings 1990 68 次引用
Canadian Medical Association … 1967

Dosage & Usage

mg = milligrams · mcg = micrograms (1,000× smaller) · IU = International Units

常用剂量

rls:
65 mg elemental iron if ferritin <75
general:
18 mg/day (women)

上限: 45 mg/day

研究中使用的剂量

剂量 持续时间 效果 N
various -- Positive --
None -- Positive 90
1000 mg ferric carboxymaltose -- Positive 58
iron supplementation, folate, dopamine agonists (non-pharmacological and pharmacological) -- Positive --
dopamine agonists, iron supplementation, alpha-2-delta ligands -- Positive --
None -- Neutral --
None -- Mixed --
None -- Positive --

最佳服用时间: On an empty stomach with vitamin C; take in the morning, not before bed

Safety & Side Effects

已报告的副作用

  • Constipation
  • Nausea
  • Stomach pain
  • Dark stools
  • Iron overload risk (hemochromatosis)

已知相互作用

  • Antacids and PPIs — reduce iron absorption
  • Levothyroxine — iron reduces thyroid medication absorption
  • Antibiotics (tetracyclines, fluoroquinolones) — mutual absorption reduction
  • Calcium supplements — take separately by 2 hours

可耐受最高摄入量: 45 mg/day

在开始服用任何补充剂之前,请务必咨询您的医疗保健提供者。

Frequently Asked Questions

Does 铁 help with 不宁腿综合征?
Based on 173 studies with 36,638 participants, there is strong evidence from multiple clinical trials that 铁 may support 不宁腿综合征 management. Our evidence grade is A (Strong Evidence).
How much 铁 should I take for 不宁腿综合征?
Studies have used various dosages. A commonly studied range is 65 mg elemental iron if ferritin <75. Always consult your healthcare provider before starting any supplement regimen.
Are there side effects of 铁?
Reported side effects may include Constipation, Nausea, Stomach pain, Dark stools. Most side effects are mild and dose-dependent. Consult your doctor if you experience any adverse reactions.
How strong is the evidence for 铁 and 不宁腿综合征?
We rate the evidence as Grade A (Strong Evidence). This rating is based on 173 peer-reviewed studies with 36,638 total participants. The overall direction of effect is mixed.

Related Evidence

其他成分用于 不宁腿综合征

FDA 免责声明: 这些声明未经美国食品药品监督管理局(FDA)评估。本网站上的产品和信息无意用于诊断、治疗、治愈或预防任何疾病。所展示的证据等级基于我们对已发表的同行评审研究的分析,不构成医疗建议。在开始任何补充剂方案之前,请务必咨询您的医疗保健提供者。