They come in all forms, milk, bars, pills and protein. They promise to build muscle, make you stronger, are they dangerous or are they good for you?
Each year the FDA report approximately 50,000 health problems associated with supplements and that include amino acids.
Some people spend hundreds of dollars a month on aminos acids, mostly those looking for more muscle mass.
"Muscle need protein to increase mass, so by branch chain reduce protein degradation or break down of protein," said pharmacist Paul Flatley.
It is a fact that amino acid help repair tissue which leads to increased muscle , but what has not been proven factual is if they work better depending as to what time of day, you take them.
"Just take protein shakes before and after workouts," Flatley said. "Once after workout and them before bedtime."
The jury is still out on the timing, but do keep in mind aminos acid supplements aren't for everyone.
"People who are at risk for too much protein would be someone prone to kidney disease, a diabetic or somebody prone to kidney stones," Flatley said.
According to many expects, they say pass on the pills and if you want protein, get from your food.
Good sources of protein include meats, beans, nuts and soy. If you are looking for something portable, try a protein bar.
"They are high in protein, definitely give you a boost up, particularly if you are focused on that one nutrient of getting extra protein in,” said community nutritionist Dianne Fagan. “If you looking for quick drink, try Muscle Milk”
"Muscle Milk is considered to be a recovery drink after high intensity work out or power work out, such as body building or weight lifting. It provides an excellent source of protein that is absorbable," Fagan said.
If you want to save some money you can just drink milk, it has plenty of calcium, vitamin D, and it's filled with nutrients at a fraction of the cost.