Silver is a soft metal that is used medically in surgical instruments, dental prostheses, and alloys. According to FDA final rule, all over-the-counter drug products containing colloidal silver ingredients or silver salts for internal or external use are not generally recognized as safe and effective and are misbranded.

o-Cresol (o-methylphenol) is organic compound, derived from coal tar and crude or obtained synthetically by alkylation of phenol with methanol. Cresol is used in manufacturing of phenolic and epoxy resins, herbicides (dinitrocresols, MCPA, MCPP), rubber, dyes, deodorizing compounds, pharmaceuticals. o-Cresol is also used as antiseptic and disinfectant.

Lycopene is the fat-soluble pigment that gives tomatoes, watermelon, pink grapefruit, and other foods their red color. Bioavailability of lycopene is enhanced in the presence of lipids and thermal processing. Lycopene accounts for about 50% of the carotenoids found in human serum and is among the major carotenoids present in human milk. The antioxidant activity of lycopene and its use in cancer prevention and cardiovascular disease have been widely documented. The scientific literature documents some adverse reactions, such as diarrhea, dyspepsia, gas, nausea, and vomiting. One trial documented a cancer-related hemorrhage in a patient taking lycopene, although causality is unclear. Lycopene interacts with some cancer chemotherapy agents, as well as with ciprofloxacin and olestra.

Erythorbic acid, an epimer of L-ascorbic acid, is used in the United States as a food additive. It was studied, that erythorbic acid enhanced of iron absorption and could play a major role in enhancing iron bioavailability from mixed diets that include foods preserved with erythorbic acid. In addition, was investigated if the erythorbic acid could influence on the metabolism of vitamin C in young women, and obtained results showed, that prolonged ingestion of erythorbic acid had no effect on vitamin C uptake or clearance from the body.