Tetrahydrodiferuloylmethane (aka Tetrahydrocurcumin) is a bioactive metabolite of curcumin. It has been shown to have anti-inflammatory, anti-oxidant, anti-cancer, and neuroprotective effects in several in vitro and in vivo models. However, there have been no advances in human trials for these conditions. It should be noted that tetrahydrocurcumin is used in non-medicinal skin care formulations intended for skin whitening, skin soothing, and anti-oxidant effects.

DL-Cysteine is a NMDA agonist at quisqualate receptors at high concentration. It is a reactive oxygen species scavenger. Acute administration of dl-cysteine completely abrogated the effects of iron loading on thrombus formation in mice. DL-Cysteine has been shown to reduce the recurrence rate of duodenal ulceration in smokers.

IODINE I-123 is a radioactive isotope of iodine used in nuclear medicine imaging, including single photon emission computed tomography (SPECT) and X-ray computed tomography (X-Ray CT) scans. Iodine-123 is usually supplied as sodium iodide (NaI) and hypoiodite (OI−) in dilute sodium hydroxide solution, at high isotopic purity. 123I is the most suitable isotope of iodine for the diagnostic study of thyroid diseases. The half-life of approximately 13.13 h (hours) is ideal for the 24-h (hour) iodine uptake test and 123I has other advantages for diagnostic imaging thyroid tissue and thyroid cancer metastasis. The iodine is taken up by the thyroid gland and/or cancer metastasis and a gamma camera is used to functional images of the thyroid for diagnosis. Quantitative measurements of the thyroid can be performed to calculate the iodine uptake (absorption) for the diagnosis of hyperthyroidism and hypothyroidism. This is administered to a patient in capsule form, by intravenous injection, or in a drink.

Strontium is a soft, silver-yellow, alkaline-earth metal, existing either in the elemental state or as the divalent ion. Strontium occurs naturally in the earth's mantle as a mixture of four stable isotopes, i.e. Sr-84, Sr-86, Sr-87, and Sr-88. Of these, Sr-88 is the most prevalent form, comprising about 83% of natural strontium. Natural stable strontium is abundant in the environment and can be found in all plant species. Consuming 75% of production, the primary use for strontium is in glass for color television cathode ray tubes, where it prevents X-ray emission. Acantharea, a relatively large group of marine radiolarian protozoa, produce intricate mineral skeletons composed of strontium sulfate. In biological systems, calcium is substituted in a small extent by strontium. In the human body, most of the absorbed strontium is deposited in the bones. The ratio of strontium to calcium in human bones is between 1:1000 and 1:2000, roughly in the same range as in the blood serum. The human body absorbs strontium as if it were its lighter congener calcium. Because the elements are chemically very similar, stable strontium isotopes do not pose a significant health threat. The average human has an intake of about two milligrams of strontium a day.