维生素证据薄弱

Beta-carotene

别名: provitamin A

Beta-carotene is an orange plant pigment that the body converts to vitamin A as needed. Unlike retinol it does not cause vitamin A toxicity, but in smokers high-dose supplements increased lung cancer risk.

用途

Source of vitamin A for vision, skin and immunity – strong evidence for the role of vitamin A
Skin protection from sun with long-term use – weak evidence, does not replace sunscreen
Prevention of chronic disease – no evidence, and a risk in smokers

剂型及区别

synthetic beta-carotene

standard form

natural beta-carotene (from Dunaliella algae or carrots)

also contains other carotenoids; advantages are not clearly shown

何时服用

With a meal containing fat.

适合搭配

Vitamin E, other carotenoids from food.

不宜同服 / 需错开

Do not combine with other beta-carotene or vitamin A products without adding up the dose.

注意事项

Smokers and people exposed to asbestos should not take beta-carotene supplements. Take care with liver disease; in pregnancy and if you take medicines, consult your doctor.

安全性

EFSA advises against beta-carotene supplements for smokers; for others do not exceed the label dose. Orange-tinted skin is a harmless sign of excess.

实用建议

Carrots, pumpkin or sweet potatoes with a little oil are a cheaper and safer source than a capsule.

含 Beta-carotene 的产品 5

Beta-carotene beta-carotene (provitamin A) 4.8 mgbeta-carotene (provitamin A) · 4.8 mg / 粒视力皮肤抗氧化

Beta-carotene natural 7500 µgnatural · 7 500 µg / 粒视力皮肤抗氧化

Beta-carotene 10000 IUbeta-carotene · 10 000 IU / 粒视力皮肤抗氧化

Beta-carotene 25000 IUnatural (Dunaliella) · 25 000 IU / 粒视力皮肤抗氧化

Beta-carotenemixed视力皮肤抗氧化

如何理解证据评级

证据充分证据中等证据薄弱无证据

充分 = 多项高质量人体研究或官方推荐；中等 = 有前景但研究规模较小；薄弱 = 研究少或结果不一；无证据 = 说法未被证实。

搭配检查

选择您服用的补充剂及药物（如有），我们会显示哪些相互干扰、哪些需要错开时间、需要注意什么。

检查 Beta-carotene 与其他的搭配

您真正需要哪些补充剂？

Fénix Methode 根据您的血检结果挑选并安排服用时间——不再白花钱。

了解 Fénix Methode

用途