Vitamin A untuk Increased Intestinal Permeability (Leaky Gut)
CRetinoic acid signaling maintains epithelial integrity and IgA production. Supplementation benefits seen primarily in deficient populations.
Kesimpulan
Retinoic acid signaling maintains epithelial integrity and IgA production. Supplementation benefits seen primarily in deficient populations.
Key Study Findings
Populasi: Community-dwelling elderly individuals
Populasi: HFD-induced NAFLD mouse model
Populasi: Vegan athletes (narrative review)
Populasi: G20 countries population, 1990-2021
Populasi: Mouse model (APP/PS1)
Populasi: Chickens
Key Statistics
3
Studi
250
Peserta
Positive
Peringkat
Referenced Papers
Dosage & Usage
mg = milligrams · mcg = micrograms (1,000× smaller) · IU = International Units
Dosis yang Umum Digunakan
- general:
- 700-900 mcg RAE/day (RDA for adults)
- gutbarriersupport:
- 900 mcg RAE/day from mixed sources
- deficiencycorrection:
- 200,000 IU single dose (WHO protocol for severe deficiency, medical supervision)
Batas atas: 3,000 mcg RAE/day (preformed vitamin A; beta-carotene has no established UL)
Dosis yang Diteliti dalam Penelitian
| Dosis | Durasi | Efek | N |
|---|---|---|---|
| None | -- | Negative | 54 |
| None | 12 weeks | Positive | -- |
| None | -- | Positive | -- |
| None | -- | Positive | -- |
| None | 12 weeks | Negative | -- |
| None | -- | Positive | -- |
| None | 11 weeks | Positive | -- |
| 10 mg/kg | -- | Negative | -- |
Waktu terbaik diminum: With meals containing fat for better absorption
Safety & Side Effects
Efek Samping yang Dilaporkan
- ⚠ Hepatotoxicity at chronic high doses of preformed vitamin A
- ⚠ Birth defects (teratogenic at high doses during pregnancy — avoid >3,000 mcg RAE/day)
- ⚠ Nausea, headache, and dizziness
- ⚠ Bone density reduction with long-term excess
Interaksi yang Diketahui
- ● Retinoid medications (isotretinoin, tretinoin — additive toxicity risk)
- ● Orlistat (reduces absorption of fat-soluble vitamins)
- ● Alcohol (increases hepatotoxicity risk of vitamin A)
- ● Tetracycline antibiotics (increased risk of intracranial pressure)
Asupan atas yang dapat ditoleransi: 3,000 mcg RAE/day (preformed vitamin A; beta-carotene has no established UL)
Selalu konsultasikan dengan tenaga kesehatan Anda sebelum memulai suplemen apa pun.Selalu konsultasikan dengan penyedia layanan kesehatan Anda sebelum memulai suplemen apa pun.
Frequently Asked Questions
Does Vitamin A help with Increased Intestinal Permeability (Leaky Gut)?
How much Vitamin A should I take for Increased Intestinal Permeability (Leaky Gut)?
Are there side effects of Vitamin A?
How strong is the evidence for Vitamin A and Increased Intestinal Permeability (Leaky Gut)?
Related Evidence
Bahan lain untuk Increased Intestinal Permeability (Leaky Gut)
Vitamin A untuk kondisi lain
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