L-cystine is the L-enantiomer of the sulfur-containing amino acid cystine. It has a role as an EC 1.2.1.11 (aspartate-semialdehyde dehydrogenase) inhibitor, a flour treatment agent, a mouse metabolite, a Saccharomyces cerevisiae metabolite and a human metabolite. It is a cystine, a non-proteinogenic L-alpha-amino acid and a L-cysteine derivative. It is a conjugate acid of a L-cystine anion. It is an enantiomer of a D-cystine. It is a tautomer of a L-cystine zwitterion. L-Cystine can improve hyperlipidemia by restoring LPL and HSL activities.L-Cystine protects against the toxicity of PQ by maintaining reduced glutathione levels in the cells. Co-administration of l-cystine and l-theanine before vaccination may enhance the immune response to influenza vaccine in elderly subjects with low serum total protein or hemoglobin.

Succinic acid is an alpha,-dicarboxylic acid resulting from the formal oxidation of each of the terminal methyl groups of butane to the corresponding carboxy group. It is an intermediate metabolite in the citric acid cycle. It has a role as a micronutrient, an anti-ulcer drug, a nutraceutical, a radiation protective agent and a fundamental metabolite. It is an alpha,omega-dicarboxylic acid and a C4-dicarboxylic acid. It is a conjugate acid of a succinate(1-). Succinic acid is a crystalline organic acid which occurs in living tissue as an intermediate in glucose metabolism.

5,6,7,4'-tetrahydroxyflavonol-3-O-rutinoside is a glycosyloxyflavone that is 3,5,6,7,4'-pentahydroxyflavonol substituted by a rutinosyl group at position 3 via a glycosidic linkage. Isolated from Daphniphyllum calycinum, it exhibits antioxidant activity. It has a role as a metabolite and a radical scavenger. It is a rutinoside, a tetrahydroxyflavone, a glycosyloxyflavone and a disaccharide derivative. 6-Hydroxykaempferol is a competitive inhibitor of tyrosinase compared to L-DOPA, it shows also high antioxidant activities.

L-Cysteine inhibits insulin release via multiple actions on the insulin secretory process through H(2)S production. L-Cysteine administration limits ischemia-reperfusion injury through a mechanism that appears to be at least partially dependent on H2S synthesis. L-cysteine hydrochloride hydrate is a hydrate that is the monohydrate form of L-cysteine hydrochloride. It has a role as a flour treatment agent, an EC 4.3.1.3 (histidine ammonia-lyase) inhibitor and a human metabolite. It contains a L-cysteine hydrochloride.

L-methionine is the L-enantiomer of methionine. It has a role as a micronutrient, a nutraceutical, an antidote to paracetamol poisoning, a mouse metabolite and a human metabolite. It is a L-alpha-amino acid, a methionine, an aspartate family amino acid and a proteinogenic amino acid. It is a conjugate base of a L-methioninium. It is a conjugate acid of a L-methioninate. It is an enantiomer of a D-methionine. It is a tautomer of a L-methionine zwitterion. L-Methionine is marker of cell viability and estimating proliferative activity. L-Methionine and L-cystine can improve hyperlipidemia by restoring LPL and HSL activities, it also might be a new potential drug for Parkinson's disease treatment.

Kahweol is a diterpenoid with formula C20H26O3, isolated from the beans of Coffea arabica. It exhibits antioxidant, anti-inflammatory, anti-angiogenesis and anti-proliferative properties. It has a role as an antioxidant, an antineoplastic agent, an angiogenesis inhibitor, an anti-inflammatory agent, an apoptosis inducer and a plant metabolite. It is a primary alcohol, a diterpenoid, a member of furans, a tertiary alcohol and an organic heteropentacyclic compound. Kahweol has anticarcinogenic, anti-angiogenic,and anti-inflammatory activities, it can block the LPS-induced activation of NF-kappaB by preventing IkappaB degradation and inhibiting IkappaB kinase activity. Kahweol also has hepatoprotective and antioxidant effects on carbon tetrachloride-induced liver damage in mice.