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Hierro para Síndrome de Piernas Inquietas

A

Basado en 65 estudios (5 meta-analyses) con 24,923 participantes en total. 34/65 estudios muestran efectos positivos.

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A

Conclusión

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 Efecto: None None
case-control n=90
Restless Leg Syndrome and Association with Serum NT Pro-CNP.
Dose: None vs: Placebo Efecto: 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 Efecto: None None

Población: 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 Efecto: None None
review
[Restless Legs Syndrome].
Dose: dopamine agonists, iron supplementation, alpha-2-delta ligands vs: Placebo Efecto: None None

Key Statistics

173

Estudios

36638

Participantes

Mixed

A

Calificación

Referenced Papers

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

Dosage & Usage

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

Dosificaciones de uso común

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

Límite superior: 45 mg/day

Dosificaciones estudiadas en la investigación

Dosificación Duración Efecto 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 --

Mejor momento para tomar: On an empty stomach with vitamin C; take in the morning, not before bed

Safety & Side Effects

Efectos secundarios reportados

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

Interacciones conocidas

  • 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

Ingesta máxima tolerable: 45 mg/day

Consulte siempre a su profesional de salud antes de comenzar cualquier suplemento.Siempre consulte a su profesional de salud antes de comenzar cualquier suplemento.

Frequently Asked Questions

Does Hierro help with Síndrome de Piernas Inquietas?
Based on 173 studies with 36,638 participants, there is strong evidence from multiple clinical trials that Hierro may support Síndrome de Piernas Inquietas management. Our evidence grade is A (Strong Evidence).
How much Hierro should I take for Síndrome de Piernas Inquietas?
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 Hierro?
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 Hierro and Síndrome de Piernas Inquietas?
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

Otros ingredientes para Síndrome de Piernas Inquietas

Aviso legal FDA: Estas declaraciones no han sido evaluadas por la Food and Drug Administration. Los productos y la información en este sitio web no están destinados a diagnosticar, tratar, curar ni prevenir ninguna enfermedad. Las calificaciones de evidencia presentadas se basan en nuestro análisis de investigación publicada revisada por pares y no constituyen consejo médico. Siempre consulte a su profesional de salud antes de comenzar cualquier régimen de suplementos.