Vitamina B6 para Dificultad para Conciliar el Sueño
A Evidencia Múltiples ensayos clínicos de gran tamaño muestran de forma consistente beneficios significativos.Basado en 31 estudios (1 meta-analysis, 9 RCTs) con 3,623 participantes en total. 17/31 estudios muestran efectos positivos.
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A
Conclusión
Vitamin B6 may help support falling asleep faster, especially for those with low B6 levels, as it plays a key role in the body's melatonin production process.
- 31 studies with 3,623 participants, including 9 RCTs
- About 55% of studies show positive effects on falling asleep
- B6 is essential for converting tryptophan to serotonin and melatonin
- May be most beneficial for people with insufficient B6 intake
Key Study Findings
Randomized Controlled Trial
n=1171
26 weeks
Double-blind
Antioxidant Treatment and the Chance to Conceive in Men Seeking Fertility Care: The SUMMER Randomized …
Dose: Daily: betaine 200mg, L-cystine 200mg, niacin 16mg, zinc 10mg, B6 1.4mg, B2 1.4m
vs: Placebo
Outcome: Ongoing pregnancy within 6 months
Efecto: AOR 0.85 [0.66-1.09]; 4-6mo AOR 0.66 [0.47-0.94]
0.20 (primary); 0.02 (4-6mo wi
Población: Men seeking fertility care (multicenter, Netherlands)
Case Reports
n=3
Open-label
Underestimated pyridoxine consumption and neurotoxicity: a novel manifestation with rheumatologic relevance - a case-based review.
Dose: None
vs: None
Outcome: Neuropathy symptoms resolution upon cessation
Efecto: None
None
Población: 3 patients with neuropathy from excess vitamin B6
In Vitro
Effects of Lactobacillus paracei JY062 Postbiotic on Intestinal Barrier, Immunity, and Gut Microbiota.
Dose: 5 mg/mL
vs: LPS-treated cell models
Outcome: Intestinal barrier function and gut microbiota
Efecto: None
None
Población: Caco-2 cells, RAW264.7 macrophages, fecal fermentation
review
[Nutrition in improving sleep quality and fighting insomnia].
Dose: tryptophan, carbohydrates, omega-3, vitamins (B6, B12, folate, niacin, D, C, beta-carotene), mineral
vs: Placebo
Efecto: None
None
Mendelian randomization
Genetically Supported Causality Between Micronutrients and Sleep Behaviors: A Two-Sample Mendelian Randomization Study.
Dose: None
vs: Placebo
Efecto: Folate vs chronotype OR 1.09 (95% CI 1.01-1.17); Vitamin B6 vs chronotype OR 0.91 (95% CI 0.86-0.96)
Folate p=0.02; Vitamin B6 p=1.
Systematic Review
Preoperative Micronutrient Repletion Strategies in Metabolic and Bariatric Surgery: A Systematic Review.
Dose: Various (oral supplements, megadoses, injections)
vs: Usual care or no treatment
Outcome: Micronutrient status pre/post-surgery
Efecto: None
None
Población: Metabolic and bariatric surgery candidates
Key Statistics
36
Estudios
126041
Participantes
↔
Mixed
A
Calificación
Referenced Papers
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2025
7 citas
Preoperative Micronutrient Repletion Strategies in Metabolic and Bariatric Surgery: A Systematic Review.
Systematic Review
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Meta-Analysis
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2018
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Review
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2015
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Dosage & Usage
mg = milligrams · mcg = micrograms (1,000× smaller) · IU = International Units
Dosificaciones de uso común
- sleep:
- 25-50 mg with B-complex
- general:
- 1.3-1.7 mg/day
Límite superior: 100 mg/day (neuropathy risk above)
Dosificaciones estudiadas en la investigación
| Dosificación | Duración | Efecto | N |
|---|---|---|---|
| Daily: betaine 200mg, L-cystine 200mg, niacin 16mg, zinc 10mg, B6 1.4mg, B2 1.4m | 26 weeks | Negative | 1171 |
| None | -- | Negative | 3 |
| 5 mg/mL | -- | Positive | -- |
| tryptophan, carbohydrates, omega-3, vitamins (B6, B12, folate, niacin, D, C, beta-carotene), mineral | -- | Positive | -- |
| None | -- | Mixed | -- |
| Various (oral supplements, megadoses, injections) | -- | Mixed | -- |
| None | -- | Mixed | -- |
| None | -- | Positive | -- |
Mejor momento para tomar: Morning or with dinner; high doses before bed may increase dream vividness
Safety & Side Effects
Efectos secundarios reportados
- ⚠ Nausea
- ⚠ Peripheral neuropathy at high doses (>100 mg/day)
- ⚠ Vivid dreams
- ⚠ Heartburn
Interacciones conocidas
- ● Levodopa — B6 may reduce effectiveness (without carbidopa)
- ● Phenobarbital and phenytoin — B6 may reduce serum levels
- ● Cycloserine — B6 deficiency may worsen side effects
Ingesta máxima tolerable: 100 mg/day (neuropathy risk above)
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 Vitamina B6 help with Dificultad para Conciliar el Sueño?
Based on 36 studies with 126,041 participants, there is strong evidence from multiple clinical trials that Vitamina B6 may support Dificultad para Conciliar el Sueño management. Our evidence grade is A (Strong Evidence).
How much Vitamina B6 should I take for Dificultad para Conciliar el Sueño?
Studies have used various dosages. A commonly studied range is 25-50 mg with B-complex. Always consult your healthcare provider before starting any supplement regimen.
Are there side effects of Vitamina B6?
Reported side effects may include Nausea, Peripheral neuropathy at high doses (>100 mg/day), Vivid dreams, Heartburn. Most side effects are mild and dose-dependent. Consult your doctor if you experience any adverse reactions.
How strong is the evidence for Vitamina B6 and Dificultad para Conciliar el Sueño?
We rate the evidence as Grade A (Strong Evidence). This rating is based on 36 peer-reviewed studies with 126,041 total participants. The overall direction of effect is mixed.
Related Evidence
Otros ingredientes para Dificultad para Conciliar el Sueño
Vitamina B6 para otras condiciones
References
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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.