Methylenetetrahydrofolate reductase (MTHFR) is an enzyme required for the formation of 5-methyltetrahydrofolate (5-MTHF), a form of folate able to cross the blood-brain barrier and which is necessary as a substrate for the remethylation of homocysteine to methionine by methionine synthase. Patients with severe MTHFR deficiency cannot make 5-MTHF and have extremely low levels in the CSF. Only treatment with oral 5-MTHF given as calcium mefolinate resulted in an increase in CSF 5-MTHF.

D-ribose, a naturally occurring pentose carbohydrate, and a key component in the adenosine triphosphate (ATP) molecule. D-ribose was studied for congestive heart failure. In addition was discovered, that D-ribose significantly reduced clinical symptoms in patients suffering from fibromyalgia and chronic fatigue syndrome. Recently was published an article where were described, that d-Ribose reacted with the N-terminal valinyl residues of hemoglobin (Hb), thus producing glycated hemoglobin (HbA1c). It is known, that HbA1c is the most important marker of hyperglycemia in diabetes mellitus, which prompts future studies to explore whether D-ribose could also lead to diabetic complications.

D-mannose is a simple sugar found naturally in fruits such as cranberries and pineapples. Unlike many sugars, it is not metabolised or stored in the liver. Much of it is excreted in the urine, where it interferes with particle attachment and prevents certain kind of bacteria from sticking to the walls and causing infection. Mannose supplement is also indicated for treatment of carbohydrate-deficient glycoprotein syndrome, however clinical trials failed to prove its efficacy.

DB00144 (1-propionyl-2-butyl phosphatidylserine) is a phosphatidylserine derivative. It consists of a propionic and butyric acid residues attached in ester linkage to the first and second carbon of glycerol and serine attached through a phosphodiester linkage to the third carbon of the glycerol. DB00144 is not found in natural sources of phosphatidylserine, which contain fatty acids with a length of 20-22 carbon atoms. DB00144 was detected as one of the cellular metabolites in murine myocardium.

Flavin adenine dinucleotide is a coenzyme form of vitamin B2. Many oxidoreductases, called flavoenzymes or flavoproteins, require FAD as a prosthetic group, which functions in electron transfers. It is usually used for the prevention and treatment of various diseases that are caused by Vitamin B2 deficiency or metabolic disorder including stomatitis, eczema, etc. No adverse reactions were reported.

Cocarboxylase is the coenzyme form of Vitamin B1 present in many animal tissues. Thiamine pyrophosphate (cocarboxylase) is the active form of thiamine, and it serves as a cofactor for several enzymes involved primarily in carbohydrate catabolism. Pancreatic cells obtain thiamin from their surroundings and enzymatically convert it into thiamin pyrophosphate (TPP) in the cytoplasm; TPP is then taken up by mitochondria via a specific carrier the mitochondrial TPP transporter (MTPPT; product of the SLC25A19 gene).

Cyclic adenosine monophosphate (cAMP, cyclic AMP or 3'-5'-cyclic adenosine monophosphate) is a molecule that is important in many biological processes; it is derived from adenosine triphosphate (ATP) by adenylate cyclase located on the inner side of the plasma membrane and anchored at various locations in the interior of the cell. Around 1960 Earl W. Sutherland, Jr. showed that cyclic adenosine monophosphate (cAMP) serves as the secondary messenger within the cell. Cyclic AMP works by activating protein kinase A (PKA, or cAMP-dependent protein kinase). PKA is normally inactive as a tetrameric holoenzyme, consisting of two catalytic and two regulatory units with the regulatory units blocking the catalytic centers of the catalytic units. Cyclic AMP binds to specific locations on the regulatory units of the protein kinase, and causes dissociation between the regulatory and catalytic subunits, thus enabling those catalytic units to phosphorylate substrate proteins. It was discovered, that melanocytes require the RAS/RAF/MEK/ERK and the cyclic AMP (cAMP) signaling pathways to maintain the fine balance between proliferation and differentiation. cAMP suppressed CRAF activity in melanocytes and that was essential to suppress the oncogenic potential of CRAF in the cells. When RAS was mutated in melanoma, the cells switched their signaling from BRAF to CRAF. That switch was accompanied by dysregulated cAMP signaling, a step that was necessary to allow CRAF to signal to MEK. Thus, a fundamental switch in RAF isoform usage occurs when RAS was mutated in melanoma, and that occurs in the context of disrupted cAMP signaling. These data have important implications for the development of therapeutic strategies to treat this life-threatening disease.

Ornithine is an amino acid produced in the urea cycle by the splitting off of urea from arginine. It is a central part of the urea cycle, which allows for the disposal of excess nitrogen. Ornithine is also a precursor of citrulline and arginine. Arginine stimulates the pituitary release of growth hormone. Burns or other injuries affect the state of arginine in tissues throughout the body. As de novo synthesis of arginine during these conditions is usually not sufficient for normal immune function, nor for normal protein synthesis, ornithine may have immunomodulatory and wound-healing activities under these conditions (by virtue of its metabolism to arginine).