Another key difference between the two forms of vitamin D is their source. “Vitamin D2 is usually produced by plants when exposed to sunlight,” Dr. Jiang says. Meanwhile, vitamin D3 is found in animal ...

Researchers have discovered that eating mushrooms containing Vitamin D2 can be as effective at ... 2000 IU of vitamin D3 or 2000 IU of mushroom powder containing vitamin D2 once a day for 12 ...

Also of interest was the finding that synthetic Vitamin D2 became protective when added to natural AbM powder; added synthetic Vitamin D3 showed only marginal improvement in survival.

Vitamin D2 Supplementation Amplifies Eccentric Exercise-Induced Muscle Damage in NASCAR Pit Crew Athletes. Nutrients , 2013; 6 (1): 63 DOI: 10.3390/nu6010063 Cite This Page : ...

When deciding whether to take vitamin D2 or D3 as a supplement, Lanham-New says that it is always best to choose vitamin D3. "It is more effective in raising vitamin D levels in the blood," Lanham ...

Vitamin D comes in two primary forms: D2 (ergocalciferol) and D3 (cholecalciferol), and are known to promote absorption of calcium and help with bone growth.

Most of our vitamin D comes from exposing our skin to sunlight. Eggeegg/Shutterstock. Both vitamins D2 and D3 are essentially inactive until they go through two processes in the body.

Power athletes and others looking for an edge to improve their performance should avoid taking vitamin D2. Research conducted at Appalachian State University's Human Performance Lab at the N.C ...