Vitamin D is most commonly found in fortified products and forms less expensive products. Vitamin D is prescribed by doctors to work on bones weakness.
On the other hand, Vitamin D3 comes from fish oil, fatty fish, liver, and egg yolks, and from some other animal sources. Vitamin D3 is a simplified form of Vitamin D. It is produced when exposed to sunlight.
Safety: Yes, Vitamin D and Vitamin D3 are safe to take.
Amount: 10-20mcg of vitamin D per day.
How it helps: Controls fatigue, chronic pain, weakness, strengthen immune system and bones
Remember this: Always check with your doctor before taking a vitamin D and Vitamin D3 supplement.