Xanthophyll from Alfalfa Manufacturers

China H&Z® L-Pyroglutamic Acid (also known as PCA, 5-oxoproline, pidolic acid, or pyroglutamate for its basic form) is a ubiquitous but little studied natural amino acid derivative in which the free amino group of glutamic acid or glutamine cyclizes to form a lactam.It is a metabolite in the glutathione cycle that is converted to glutamate by 5-oxoprolinase. Pyroglutamate is found in many proteins including bacteriorhodopsin. N-terminal glutamic acid and glutamine residues can spontaneously cyclize to become pyroglutamate, or enzymatically converted by glutaminyl cyclases. This is one of several forms of blocked N-termini which present a problem for N-terminal sequencing using Edman chemistry, which requires a free primary amino group not present in pyroglutamic acid. The enzyme pyroglutamate aminopeptidase can restore a free N-terminus by cleaving off the pyroglutamate residue.

China H&Z® Diosmin is also called Alvenor. It is a kind of drug for the treatment of hemorrhoid symptoms related to acute episodes, can also be used in the treatment of symptoms associated with venous lymphatic insufficiency (leg heavy, pain, morning acid swells discomfort).Diosmin hesperidin is a plant chemical that is classified as a "bioflavonoid". It is found primarily in citrus fruits. People use it asmedicine.Hesperidin alone, or in combination with other citrus bioflavonoids (diosmin, for example), is most often used for bloodvessel conditions such as hemorrhoids,varicose veins, and poor circulation (venous stasis). It is also used to treat lymphedema, a condition involving fluid retention that can be a complication of breast cancer surgery.

China H&Z® DL-Methionine is one of the physical forms of methionine. DL-Methionine is not the natural form of methionine.Methionine is one of essential amino acids constituting the human body, involved in protein synthesis. Because it can not be generated in the body itself, it must be obtained from outside.

Melatonin helps control your sleep and wake cycles.

Phosphatidylserine powder (PS) is from the phospholipids family,Phosphatidylserine exists in all biomembranes of animals,higher plants

China H&Z® GumXanthan is a polysaccharide with a wide variety of uses, including as a common food additive. It is a powerful thickening agent, and also has uses as a stabilizer to prevent ingredients from separating. It can be produced from a range of simple sugars using a fermentation process, and derives its name from the strain of bacteria used in this: Xanthomonas campestris.