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There are two sources of vitamin D: Vitamin D2 comes from fortified foods and mushrooms, while vitamin D3 is produced in the skin when exposed to sunlight (which is why it’s often known as the ...
Nature Made is an American vitamin brand, founded in 1971 by Barry Pressman and Henry Burdick. [1] [2] Operating as a brand of Pharmavite, [3] Nature Made manufactures over 150 different types of supplements. [2] Its parent company, Pharmavite, was acquired by Otsuka Pharmaceutical in 1989. [4] [5] [6]
Vitamin D3 needs for the average adult between the ages 19 and 70 years old is 600 IU (15 mcg) per day, says Pelitera. “This includes foods, for example, 1 cup of fortified milk contains about ...
Vitamin D 3 (cholecalciferol) is produced industrially by exposing 7-dehydrocholesterol to UVB and UVC light, followed by purification. The 7-dehydrocholesterol is sourced as an extraction from lanolin, a waxy skin secretion in sheep's wool. [187] Vitamin D 2 (ergocalciferol) is produced in a similar way using ergosterol from yeast as a ...
Low levels of vitamin D3 are more commonly found in individuals living in northern latitudes or with other reasons for a lack of regular sun exposure, including being housebound, frail, elderly, or obese, having darker skin, and wearing clothes that cover most of the skin. [23] [24] Supplements are recommended for these groups of people. [24]
Pharmavite is an American vitamin and supplement company, based in West Hills, California and founded in 1971 by Barry Pressman and Henry Burdick. Its Nature Made vitamin brand was launched that same year. [2] It was acquired by Otsuka Pharmaceutical in 1989. [3] [4] [5]
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