SARMs
SARMs provide the ability to design molecules that can be delivered orally, but that selectively target the androgen receptors in different tissues differently. They are intended to have the same kind of effects as androgenic anabolic steroids but be much more selective in their action. One substantial advantage of SARMs developed to date is that they are all orally active without causing liver damage, whereas most anabolic steroids are not active orally and must be injected, and those anabolic steroids that are orally active tend to cause dose-dependent liver damage.
Peptides
Peptides are short chains of amino acid monomers linked by peptide bonds. They have many functions in the body. Some act like neurotransmitters, others like hormones. There are several amino acids that are necessary in sufficient amount to produce hormones like human growth hormone (HGH). If you aren’t absorbing or making enough of those amino acids, your production of that hormone will be lowered. People interested in fitness and bodybuilding goals, are interested in counteracting these down-regulations so that they can maximize bodies ability to perform and meet bodybuilding goals.