5-hydroxytryptophan Manufacturers

Grape seed extract contain procyanidine, is an antioxidant, anti-mutation, anti-cancer, anti-viral, anti-inflammatory, anti-ulcer, and cholesterol-lowering effects.

China H&Z® Polyglutamic acid is also known as natto gum and polyglutamic acid. It is a water-soluble, biodegradable, non-toxic, biopolymer prepared by microbial fermentation. Its moisturizing and water-locking effect is 500 times that of hyaluronic acid. Mainly used for moisturizing, whitening, antibacterial, and improving skin health.

China H&Z® Green Tea Extract has a series of good pharmacological functions such as anti-oxidation, anti-aging and lowering blood lipid.

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® Saw palmetto extract is an extract of the fruit of Saw palmetto. It is rich in fatty acids and phytosterols. It has been used in traditional and alternative medicine for a variety of indications, most notably benign prostatic hyperplasia (BPH).

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.