have been researching both ALA and RLA
some amazing benefits outside of PN as well

http://www.bodybuilding.com/fun/ala.htm

improval of physique
Combats free radicals
Protects our genetic material
Slows aging
Protects against heart disease
Protects against cancer
Improves skin and helps erase wrinkles
Regulates blood sugar in diabetics
Protects the liver
May be used as a treatment for Stroke