Prezatide is a tripeptide molecule consisiting of lysine, glycine and histidine, also known as GHK (glycyl-L-histidyl-L-lysine), that forms a complex with copper ions. Prezatide is used in cosmetic products (skin and hair) and is known help wound healing. Prezatide increases the synthesis and deposition of type I collagen and glycosaminoglycan. It is thought to play a role in the modulation of tissue remodeling by increases the expression of matrix metalloproteinase-2, as well as tissue inhibitor of matrix metalloproteinases-1 and -2. Prezatide has antioxidant activity due to its ability to supply copper for superoxide dismutase and anti-inflammatory ability due to the blockage the of iron (Fe2+) release during injury.

Prezatide is a tripeptide molecule consisiting of lysine, glycine and histidine, also known as GHK (glycyl-L-histidyl-L-lysine), that forms a complex with copper ions. Prezatide is used in cosmetic products (skin and hair) and is known help wound healing. Prezatide increases the synthesis and deposition of type I collagen and glycosaminoglycan. It is thought to play a role in the modulation of tissue remodeling by increases the expression of matrix metalloproteinase-2, as well as tissue inhibitor of matrix metalloproteinases-1 and -2. Prezatide has antioxidant activity due to its ability to supply copper for superoxide dismutase and anti-inflammatory ability due to the blockage the of iron (Fe2+) release during injury.

Melengestrol is a steroidal progestin and antineoplastic agent which was never marketed. An acylated derivative, melengestrol acetate, is used as a growth promoter in animals. Melengestrol acetate (MGA) is one of six steroidal hormone growth promoters approved for use in Canada and USA. These products are used to improve growth rate and feed efficiency, as well as to suppress estrus in beef heifers (CFIA 2008). They are not approved for use in any species other than beef cattle meant for slaughter. MGA is the only drug of its kind that is administered in animal feed, and its labelled dose in Canada is 0.4mg per heifer per day (CFIA 2008). A mandatory withdrawal of 2 days before slaughter is applied to any animal that is administered MGA.

Deslorelin is an GnRH agonist used in veterinary. It effects contraception by temporarily suppressing the reproductive endocrine system and preventing production of pituitary (FSH and LH) and gonadal hormones (estradiol and progesterone in females and testosterone in males). The observed effects are similar to those following ovariectomy or castration, but are reversed after the hormone content of the implant is depleted or the implant is removed. As an agonist, deslorelin first stimulates the reproductive system, which can result in estrus and ovulation in females or temporary enhancement of testosterone and semen production in males. Then, down-regulation follows the initial period of stimulation. Although deslorelin can also be an effective contraceptive in males of some species, manufacturer recommends its use primarily in females, since monitoring efficacy in females by suppression of estrous behavior or of gonadal steroids in feces is more straightforward than ensuring continued absence of sperm in males, since most institutions cannot perform regular semen collections. It can, however, be used to ameliorate aggression in males of some species, but higher dosages are usually needed. While the major application of deslorelin was initially male contraception, due to its two differing actions, either the stimulation of oestrus or the sterilization of fertility, its use has been increasing in the bitch as well. SUPRELORIN® F (deslorelin acetate) Implant is a once-yearly, subcutaneous implant that assists in the management of adrenal disease in ferrets.

Nifurpipone is a nitrofuran with a large antimicrobial spectrum. Nifurpipone was shown to be a useful antibacterial agent in urinary tract infections.

Domperidone is a peripherally selective D2 receptor antagonist. It acts as an antiemetic and a prokinetic agent through its effects on the chemoreceptor trigger zone and motor function of the stomach and small intestine. Domperidone was not approved in USA due to risks of cardiac arrhythmias, cardiac arrest, and sudden death, but is available in other countries. However, FDA allows access to Domperidone through an expanded access investigational new drug application (IND) to patients with gastroesophageal reflux disease with upper GI symptoms, gastroparesis, and chronic constipation. As an “off-label” use, domperidone is prescribed to breastfeeding women to enhance their milk production.

2,4-Dichlorophenoxyacetic acid (2,4-D) was the first synthetic herbicide to be commercially developed and has commonly been used as a broadleaf herbicide for over 60 years. It is a selective herbicide that kills dicots without affecting monocots and mimics natural auxin at the molecular level. 2,4-D was developed during World War II as one of many so-called phenoxy herbicides by aiming to increase crop yields for a nation at war. It was commercially released in 1946 becoming the first successful selective herbicide and allowed for greatly enhanced weed control in wheat, maize, rice, and other similar cereal crops because it specifically targets dicots. This herbicide family is said to have “initiated an agricultural revolution and laid the corner stone of present-day weed science” when it was first marketed in the 1940s.