What are the facts worth noting about dietary supplements?

Dietary supplements are not regulated by the same laws as over-the-counter or prescription drugs.
Dietary supplements are poorly regulated, and many studies have shown that many of them do not contain what they declare on the labels.
Most dietary supplements have not been subjected to rigorous studies that prove their positive effects.
The only restriction under which dietary supplements are found is not being able to claim to cure a disease.
The majority of substances available as dietary supplements can be obtained more easily and at lower cost through diet and good nutrition.
There is a huge amount of dietary supplements on the market, and more are appearing daily.
Consulting a licensed athletic trainer, physician, or registered dietitian before consuming any dietary supplement is the best advice.
Supplements advertised as 'muscle builders' may contain some form of EAA, while those advertised as 'energy boosters' may contain a stimulant.