Ther isn't one despite what the marketers may say. A human body can only absorb about 26g of protein per day and this is best made up from high quality protein such as white meat (chicken) or fish. Or you can waste you money on expensive whey protein shakes that you will excrete with no positive effect. Count Kryzal
It depends on what your goals are and what shake you are taking. Protein Supplements are a necessity for any bodybuilder post work out. Protein shakes alone won't give you muscle if you aren't training hard enough. Personally I make my own shakes that are good and much cheaper, but there shakes are very good as well. So if you eat right, and train hard...then yes there shakes work.
Amino tablets
For people under 13 there are no protein shakes that will not harm them. As a 12 year old is still growing, protein shakes can have harmful side effects. This means that they would get protein from different sources, such as: eggs and cow's milk. Red meat also works however it takes a while to digest which obviously makes it a bad alternative for a protein shake (protein shakes are quickly processed by the body, hence the appeal). If you want a child to perform well try putting them on the diet in the related link. It is very effective however it will require a lot of discipline.
yes, because milk is not good for them
You could get some good tasting protein drinks at amazon.com. Amazon is a great website that will sell protein shakes at a very cheap price and they will taste good.
Protein shakes can be incorporated into a healthy diet, they are not designed to replace a healthy diet just to supplement it. Protein shakes are best used I find after a workout to feed the muscles and help them repair / grow. Eating a meal approximately 1 hour after is also advisable to get maximum benefit.
EAS Protein shakes are not only good for you, they taste great too. There are a lot of flavors to choose from and they will leave you full and satisfied.
I'm assuming you mean "protein shakes". The source of the protein in almost ALL shakes is usually Whey and Soy. Both of these contain Iodides which aggravate acne. The best alternative is a Pea or Hemp protein shake. There's a good company called Mercola that makes both.
Muscle Milk is a popular protein shake that tastes good. Boost and Ensure shakes are good too for healthy replacements. You can find vanilla and chocolate flavors.
There is no age limit or requirement on protein shakes, most protein shakes (whey) are fine for you if made by a trusted company. The main component of almost all protein shakes is the whey, which is a natural dairy product.
protein and water. i usually eat these mint builder bars that are pretty good. You can also drink the chocolate protein shakes.
One of the top selling protein supplement is Optimum Gold Standard 100%. As with all good protein shakes it contains low sugar and fat and more of the protein you need.