过量危害:大量服用可引起腹泻、皮肤红而亮、头痛、尿频、恶心呕吐、胃痉挛 维生素 D 类(Vitamin D) 我是一类抗佝偻病维生素的总称,已知的成员至少有 10 种,以 D2和D3 最重要。维生素D2是食物来源的维生素D,维生素D3是皮肤接受阳光照射合成的维生素D。 获取来源:阳光照射是机体获得维生素D的主要方法;食物中肝、...
Vitamin D is a general term that refers to both vitamin D2 (ergocalciferol) and vitamin D3 (cholecalciferol). Vitamin D3 is produced naturally in the skin upon sun exposure and is available in animal foods, such as salmon and egg yolks. Vitamin D2 comes from mushrooms and fortified foods...
vitamindcalcium的意思是维生素D。人体里的维生素D主要有两种：即维生素D2和维生素D3，前者来源于植物，后者是来源于动物。无论是植物还是动物，都需要通过日光照射才能合成维生素D。例如，在人类皮肤中，维生素D的前体，7-脱氢胆固醇，在阳光下转化为维生素D3。然而，这种维生素D3并不是活性成分，它需要通...
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Vitamin D2 And vitamin D3Rise, Early T O
1,High Potential Vitamin D3 Resin is obtained from the ultra-violet light irradiation and thermal isomerization of 7-Dehydrocholesterol. 2,Main specifications Appearance:Yellow to light brown,resinous sold at room temperature,with a characteristic odour,practically free from any particulate matter....
Vitamin D320 mcg is equivalent to 800 units. Vitamin D3and D2are both effective for vitamin D repletion, depending on the dosing regimen; however, D3is more potent. Acute respiratory infections (cold, flu, chest infections):In an individual patient data meta-analysis evaluating potential of vi...
Vitamin D(维生素D)是一类固醇类衍生物,长期以来被用于佝偻病的预防和治疗,因此也常被称作抗佝偻病维生素。天然维生素D有5种化合物,其中药用最多的为Vitamin D2和Vitamin D3。当然,随着现代药物合成等药物开发技术的提高,Vitamin D已经拥有3000种以上活性...
2.吃富含维生素D的食物 膳食维生素D的天然来源很少,以维生素D2或D3的形式存在。 含维生素D比较丰富的食物有鱼肝油、肝脏、肾脏、全脂奶、黄油、蛋黄、富脂鱼以及一些强化食物,比如维生素A、D强化牛奶。 其实,成年人只要经常接触阳光,一般不会发生维生素D缺乏。
is another name for supplemental vitamin D2. Supplemental D2 is cheaper to produce than supplemental D3; however, it is not as effective at raising levels of vitamin D in the blood nor as stable as synthetic vitamin D3. Vitamin D2 still requires conversion in the body to become D3 ...