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Vitamina B6 para Dificuldade para Adormecer

A

Baseado em 31 estudos (1 meta-analysis, 9 RCTs) com 3,623 participantes no total. 17/31 estudos mostram efeitos positivos.

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A

Conclusão

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 Efeito: AOR 0.85 [0.66-1.09]; 4-6mo AOR 0.66 [0.47-0.94] 0.20 (primary); 0.02 (4-6mo wi

População: 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 Efeito: None None

População: 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 Efeito: None None

População: 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 Efeito: None None
Mendelian randomization
Genetically Supported Causality Between Micronutrients and Sleep Behaviors: A Two-Sample Mendelian Randomization Study.
Dose: None vs: Placebo Efeito: 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 Efeito: None None

População: Metabolic and bariatric surgery candidates

Key Statistics

36

Estudos

126041

Participantes

Mixed

A

Nota

Referenced Papers

Alternative therapies in … 2021 10 citações
Medical hypotheses 2019 15 citações
Journal of Alzheimer's … 2018 281 citações
Pediatric nephrology (Berlin, … 2018 9 citações
European journal of … 2012 225 citações
The British journal … 2002 358 citações
Public health nutrition 2000 334 citações

Dosage & Usage

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

Dosagens Comumente Utilizadas

sleep:
25-50 mg with B-complex
general:
1.3-1.7 mg/day

Limite superior: 100 mg/day (neuropathy risk above)

Dosagens Estudadas em Pesquisas

Dosagem Duração Efeito 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 --

Melhor horário: Morning or with dinner; high doses before bed may increase dream vividness

Safety & Side Effects

Efeitos Colaterais Relatados

  • Nausea
  • Peripheral neuropathy at high doses (>100 mg/day)
  • Vivid dreams
  • Heartburn

Interações Conhecidas

  • Levodopa — B6 may reduce effectiveness (without carbidopa)
  • Phenobarbital and phenytoin — B6 may reduce serum levels
  • Cycloserine — B6 deficiency may worsen side effects

Ingestão máxima tolerável: 100 mg/day (neuropathy risk above)

Consulte sempre o seu profissional de saúde antes de iniciar qualquer suplemento.Sempre consulte seu profissional de saúde antes de iniciar qualquer suplemento.

Frequently Asked Questions

Does Vitamina B6 help with Dificuldade para Adormecer?
Based on 36 studies with 126,041 participants, there is strong evidence from multiple clinical trials that Vitamina B6 may support Dificuldade para Adormecer management. Our evidence grade is A (Strong Evidence).
How much Vitamina B6 should I take for Dificuldade para Adormecer?
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 Dificuldade para Adormecer?
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

Vitamina B6 para outras condições

Aviso Legal da FDA: Estas declarações não foram avaliadas pela Food and Drug Administration. Os produtos e informações neste site não se destinam a diagnosticar, tratar, curar ou prevenir qualquer doença. As notas de evidência apresentadas são baseadas em nossa análise de pesquisas revisadas por pares publicadas e não constituem aconselhamento médico. Sempre consulte seu profissional de saúde antes de iniciar qualquer regime de suplementação.