Acetyl Hexapeptide (AH3):  Used as ingredient in anti-aging cosmeti . . .
Acetylcholine:  A chemical involved in the transmission of nerve impulses. . . .
Acrodermatitis Enteropathica:  An inherited zinc deficiency disorder in . . .
Adrenal Glands:  A pair of glands positioned above the kidneys, which are responsi . . .
Adrenaline:  A stress hormone which aids in the release of stored sugar in the . . .
Aerobic Exercise:  Exercise that requires additional effort by the heart and lungs t . . .
Aldosterone:  An adrenal hormone that increases the reabsorption of sodium and . . .
Allergen:  A substance that provokes an allergic response.
Alpha Hydroxy Acids (AHAs):  Water soluble compounds used in chemical . . .
Alpha Lipoic Acid (ALA):  Antioxidant increasing the production of . . .
Amino Acids:  The building blocks that make up proteins. Humans need 20 differe . . .
Aminophylline:  Active ingredient in Epidril, Aminophylline has been used for man . . .
Analgesic:  A substance that relieves pain.
Anesthetic:  A substance that causes loss of sensation.
Antacid:  A substance that neutralizes stomach acid.
Antibiotic:  A substance that inhibits or destroys susceptible microorganisms, . . .
Antibody:  A blood protein produced by the immune system in response to a fo . . .
Anticonvulsant:  A substance that prevents or relieves convulsions. . . .
Antigen:  A foreign substance that causes the body to produce antibodies. . . .
Antihistamine:  A substance that counteracts the effects of histamine. . . .