The whey protein and the casein protein

Protein supplement can be divided into two categories

The whey protein and the casein protein.

1. Casein protein are slower digesting protein which can provide amino acids in the body even after 6 hours of uptake. This are preferable taken at night before sleep or in between two meals when you won't be having any other protein meal.
2. Whey protein. Whey protein are faster digesting. They are usually taken when you need amino acids in the body very quickly say within an hour. Now whey protein can be classified according to how fast they can be digested.
1. THE WHEY CONCENTRATE. It is the standard whey which all take. Has protein plus lactose in it.
2. THE WHEY ISOLATE. These are faster acting than concentrate and are without lactose. Good for those who are lactose intolerant. But costlier than whey concentrate.
3. THE WHEY HYDROLYSED. This is like you are taking the individual amino acids. The most fast acting of all three. Lactose free and the costliest.

So the take away is use whey protein when you want amino acid instantly in your body. If you are a beginner or intermediate lifter prefer Whey concentrate or isolate. If you are lactose intolerant isolate is better than concentrate.

If you are a advanced lifter then prefer Whey HYDROLYSED. Because you prefer that amino acid quicker and mostly you can afford that.

Guide to buy whey protein. Buy the protein from a reliable source. 

Buy from some one you trust.

While choosing whey protein see the label. Take the amount of protein per serving and divide it from serving size. It will give you the protein percentage. Never buy a whey protein if it has protein percentage less that 70%. It will be waste of your money.