Methyl-1-testosterone(M1T)(17alpha-hydroxy-17-methyl- 5-androst-1-en-3-one) is a new designer steroid that is most likely produced to circumvent the legal restrictions. It is advertised to be highly anabolic and moderately androgenic and not convertible to estrogens. However, in scientific literature, it was reported to show anabolic properties of 25% and androgenic properties of 50% compared with testosterone propionate after im injection in castrated rats. In February 2006, Health Canada (Federal Department) warned consumers not to use M1T-containing products because of potentially serious health risks such as liver disorders and hardening of the arteries. Since 2006, M1T is explicitly listed on the World Anti-Doping Agency list of prohibited substances, and therefore, its use by athletes is prohibited.

Ethyl propionate causes topical dissolution of cholesterol gallbladder. It was tested on an animal model of gallstones in 1997, however, there is no information about its further development.

Potassium propionate is the potassium salt of propionic acid. It is used as an antimicrobial agent in bread to prevent germination of some types of bacteria which causes sticky yellow patches to occur. Has been linked with behavioural and learning problems, migraines, headaches and can cause asthma. Potassium propionate is represented by the food labeling E number E283 in Europe and by the INS number 283 in Australia and New Zealand. It is very effective against molds and rope forming bacteria and is preferred in chemically leavened cakes, tortillas, pie fillings. Since Probake® Potassium Propionate does not add sodium to the product, it is very suitable for low-salt recipes. A typical dosage for potassium propionate in bakery products is 0.3%. Probake Potassium Propionate is available as a dust free agglomerate grade. GRAS.