Table 1 below lists the top featured suppliers of Vitamin D and Vitamin D3 on. Top Featured Suppliers of Vitamin D & D3 on Thomas Apart from its uses in humans, this vitamin is also commonly put into food for cattle, pigs, and dogs as a supplement. Most supplements contain this type of vitamin, although D3 also naturally is produced when sunlight hits a person’s skin. It has been proven as the more effective type of Vitamin D. Vitamin D3 naturally comes from animal sources, such as fish, liver, eggs, and butter. D2 is the type of Vitamin D in most fortified foods since it’s less expensive to produce. This type naturally comes from plants, more specifically mushrooms grown under UV light. Vitamin D2 has been shown to be less effective than D3, which has caused it to fall out of favor as a supplement. At the same time, Vitamin D3 (also known as Cholecalciferol) is animal-based and more effective. Vitamin D2 (also known as ergocalciferol) is plant-based and less effective, though cheaper. There is more than one type of this vitamin to choose from. Heavy metal ions make it even more unstable. Vitamin D is a sensitive product it must be guarded during shipping and processing from UV light, air, heat, and mineral acid. It should be noted that while a consumer can overdose on Vitamin D from a supplement, it’s impossible to overdose from getting too much sunlight, as the body regulates how much is produced.

However, not all people get enough sunlight to produce enough Vitamin D, especially those at higher latitudes or spending most of their time indoors. Vitamin D is produced by human skin when exposed to sunlight. First, however, we’ll be going over some basic facts about this vitamin to help you source more effectively. In this article, we’ll be covering the most popular suppliers of Vitamin D on as measured by engagement. Although there are natural sources of this vitamin, and some manufacturers will add it to certain foods, Vitamin D supplements are also commonly taken by certain people to maintain health in 4,000 IU amounts per day. Vitamin D is known to help with calcium absorption, immunity, and regulation of bone growth and phosphorous levels.

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