GABA para Dificuldade para Adormecer
B Evidências Pelo menos um ensaio aleatorizado apoia esta conclusão, com resultados maioritariamente consistentes.Baseado em 16 estudos (1 meta-analysis). 16/16 estudos mostram efeitos positivos.
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B
Conclusão
Research consistently suggests that GABA-related supplements may help you fall asleep faster, though most evidence comes from animal studies rather than human trials.
- All 16 studies show positive effects on sleep onset
- A GABA and L-theanine combination was shown to decrease sleep latency in one study
- GABAergic pathways are central to the brain's natural sleep-initiation process
- Most studies are preclinical — more human trials are needed to confirm benefits
Key Study Findings
animal study / preclinical
Guhan Yangsheng Jing alleviates sleep deprivation-induced neuronal injury via neurotransmitter rebalancing, mitochondrial protection, and inhibition …
Dose: Guhan Yangsheng Jing (GHYSJ) multi-herbal decoction (dose not specified in abstract)
vs: Placebo
Efeito: None
None
Animal study
Ginsenoside Rg1 alleviates PCPA-induced insomnia by inhibiting NLRP3 inflammasome activation and pyroptosis through the Nrf2/HO-1 …
Dose: None
vs: Placebo
Efeito: None
None
Animal study
Lactobacillales derived from traditional Xizang dairy products improve insomnia and restore neurotransmitter-metabolic profiles via gut …
Dose: Mixed probiotics (Lactobacillus helveticus L551, Lacticaseibacillus paracasei L578, Streptococcus th
vs: Placebo
Efeito: None
None
Review
The Efficacy of Melatonergic Receptor Agonists Used in Clinical Practice in Insomnia Treatment: Melatonin, Tasimelteon, …
Dose: None
vs: Placebo
Efeito: None
None
Animal Study
Promotion of sleep by cinnamic acid in parachlorophenylalanine-induced insomnia in rats.
Dose: Cinnamic acid (CA) administered to rats (dose not specified)
vs: Placebo
Efeito: None
None
animal experimental
1 weeks
Beta-Myrcene as a Sedative-Hypnotic Component from Lavender Essential Oil in DL-4-Chlorophenylalanine-Induced-Insomnia Mice.
Dose: None
vs: Placebo
Efeito: None
None
Key Statistics
16
Estudos
--
Participantes
↑
Positive
B
Nota
Referenced Papers
Journal of ethnopharmacology
2026
Psychopharmacology
2025
5 citações
Microbiological research
2025
3 citações
Molecules (Basel, Switzerland)
2025
2 citações
International immunopharmacology
2025
1 citações
Pharmaceuticals (Basel, Switzerland)
2024
6 citações
Phytomedicine : international …
2023
33 citações
Preventive nutrition and …
2022
18 citações
Nutrients
2021
85 citações
Food & function
2020
42 citações
Pharmaceutical biology
2019
134 citações
BMC complementary and …
2019
80 citações
Frontiers in pharmacology
2019
52 citações
Study on the hypnotic effect of rare protopanaxadiol-type and protopanaxatriol-type ginsenosides.
Other
RSC advances
2019
13 citações
Nutrition research and …
2018
12 citações
European journal of …
2014
43 citações
Dosage & Usage
mg = milligrams · mcg = micrograms (1,000× smaller) · IU = International Units
Dosagens Comumente Utilizadas
- sleep:
- 100-300 mg, before bed
Limite superior: Not established
Dosagens Estudadas em Pesquisas
| Dosagem | Duração | Efeito | N |
|---|---|---|---|
| Guhan Yangsheng Jing (GHYSJ) multi-herbal decoction (dose not specified in abstract) | -- | Positive | -- |
| None | -- | Positive | -- |
| Mixed probiotics (Lactobacillus helveticus L551, Lacticaseibacillus paracasei L578, Streptococcus th | -- | Positive | -- |
| None | -- | Positive | -- |
| Cinnamic acid (CA) administered to rats (dose not specified) | -- | Positive | -- |
| None | 1 weeks | Positive | -- |
| Suanzaoren decoction (SZRD) orally administered; dose not specified | -- | Positive | -- |
| 10, 25, or 50 mg/kg body weight ashwagandha extract (AE, 35% withanolide glycosides, Shoden) | -- | Positive | -- |
Melhor horário: 30-60 minutes before bed
Safety & Side Effects
Efeitos Colaterais Relatados
- ⚠ Tingling or flushing sensation
- ⚠ Drowsiness
- ⚠ Mild shortness of breath (transient)
- ⚠ GI discomfort
Interações Conhecidas
- ● Anti-anxiety medications (benzodiazepines) — potential additive sedation
- ● Antihypertensives — GABA may lower blood pressure
- ● Antiepileptic drugs — may alter GABAergic signaling
Ingestão máxima tolerável: Not established
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 GABA help with Dificuldade para Adormecer?
Based on 16 studies with 0 participants, there is moderate evidence from clinical studies that GABA may support Dificuldade para Adormecer management. Our evidence grade is B (Good Evidence).
How much GABA should I take for Dificuldade para Adormecer?
Studies have used various dosages. A commonly studied range is 100-300 mg, before bed. Always consult your healthcare provider before starting any supplement regimen.
Are there side effects of GABA?
Reported side effects may include Tingling or flushing sensation, Drowsiness, Mild shortness of breath (transient), GI discomfort. Most side effects are mild and dose-dependent. Consult your doctor if you experience any adverse reactions.
How strong is the evidence for GABA and Dificuldade para Adormecer?
We rate the evidence as Grade B (Good Evidence). This rating is based on 16 peer-reviewed studies with 0 total participants. The overall direction of effect is positive.
Related Evidence
Outros ingredientes para Dificuldade para Adormecer
GABA para outras condições
References
- [1] Xinying Fu et al.. J Ethnopharmacol. 2026. Guhan Yangsheng Jing alleviates sleep deprivation-induced neuronal injury via neurotransmitter rebalancing, mitochondrial protection, and inhibition of pyroptosis. doi:10.1016/j.jep.2026.121209 PubMed
- [2] Jingyi Li et al.. Psychopharmacology (Berl). 2025. Ginsenoside Rg1 alleviates PCPA-induced insomnia by inhibiting NLRP3 inflammasome activation and pyroptosis through the Nrf2/HO-1 pathway in mice. doi:10.1007/s00213-025-06828-5 PubMed
- [3] Peifan Li et al.. Microbiol Res. 2025. Lactobacillales derived from traditional Xizang dairy products improve insomnia and restore neurotransmitter-metabolic profiles via gut microbiota in PCPA-induced mice. doi:10.1016/j.micres.2025.128276 PubMed
- [4] Kacper Żełabowski et al.. Molecules. 2025. The Efficacy of Melatonergic Receptor Agonists Used in Clinical Practice in Insomnia Treatment: Melatonin, Tasimelteon, Ramelteon, Agomelatine, and Selected Herbs. doi:10.3390/molecules30183814 PubMed
- [5] Xiaona Ye et al.. Int Immunopharmacol. 2025. Promotion of sleep by cinnamic acid in parachlorophenylalanine-induced insomnia in rats. doi:10.1016/j.intimp.2025.114852 PubMed
- [6] Luge Chen et al.. Pharmaceuticals (Basel). 2024. Beta-Myrcene as a Sedative-Hypnotic Component from Lavender Essential Oil in DL-4-Chlorophenylalanine-Induced-Insomnia Mice. doi:10.3390/ph17091161 PubMed
- [7] Yan Yan et al.. Phytomedicine. 2023. Screening the effective components of Suanzaoren decoction on the treatment of chronic restraint stress induced anxiety-like mice by integrated chinmedomics … doi:10.1016/j.phymed.2023.154853 PubMed
- [8] Sindgi Vasudeva Murthy et al.. Prev Nutr Food Sci. 2022. Hydroalcoholic Extract of Ashwagandha Improves Sleep by Modulating GABA/Histamine Receptors and EEG Slow-Wave Pattern in In Vitro - In Vivo … doi:10.3746/pnf.2022.27.1.108 PubMed
- [9] Oliviero Bruni et al.. Nutrients. 2021. Herbal Remedies and Their Possible Effect on the GABAergic System and Sleep. doi:10.3390/nu13020530 PubMed
- [10] Jingjing Shao et al.. Food Funct. 2020. Ginsenoside Rg5/Rk1 ameliorated sleep via regulating the GABAergic/serotoninergic signaling pathway in a rodent model. doi:10.1039/c9fo02248a PubMed
- [11] Suhyeon Kim et al.. Pharm Biol. 2019. GABA and l-theanine mixture decreases sleep latency and improves NREM sleep. doi:10.1080/13880209.2018.1557698 PubMed
- [12] Yu Zhong et al.. BMC Complement Altern Med. 2019. Sedative and hypnotic effects of compound Anshen essential oil inhalation for insomnia. doi:10.1186/s12906-019-2732-0 PubMed
- [13] Rui Shi et al.. Front Pharmacol. 2019. Loganin Exerts Sedative and Hypnotic Effects via Modulation of the Serotonergic System and GABAergic Neurons. doi:10.3389/fphar.2019.00409 PubMed
- [14] Ning Mou et al.. RSC Adv. 2019. Study on the hypnotic effect of rare protopanaxadiol-type and protopanaxatriol-type ginsenosides. doi:10.1039/c9ra01549c PubMed
- [15] Ki-Bae Hong et al.. Nutr Res Pract. 2018. Two combined amino acids promote sleep activity in caffeine-induced sleepless model systems. doi:10.4162/nrp.2018.12.3.208 PubMed
- [16] Chenning Zhang et al.. Eur J Pharmacol. 2014. Pharmacological evaluation of sedative and hypnotic effects of schizandrin through the modification of pentobarbital-induced sleep behaviors in mice. doi:10.1016/j.ejphar.2014.09.012 PubMed
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.