Naringin is one of the citrus bioflavonoids.

The common citrus bioflavonoids include:
Apigenin -- found in high amounts in parsley, Thyme, and peppermint and many other herbs including lemon balm.
Hesperidin -- found in citrus peel and pulp -- commercial orange juice provides 444 mg/l hesperidin
Hesperitin --
Naringenin
Naringin
Narirutin -- commercial orange juice provides 96 mg narirutin per liter 
Nobiletin -- a citrus bioflavonoid isolated from tangerines
Quercetin is found in high amounts in onions, kale, hot peppers, and rutabagos.
Rutin
Tangeretin
Tangeritin

NADH for mind

Naringin Research Update
The hypoglycemic effects of hesperidin and naringin are partly mediated by hepatic glucose-regulating enzymes in C57BL/KsJ-db/db mice.
J Nutr. 2004 Oct;134(10):2499-503.
Dietary antioxidant compounds such as bioflavonoids may offer some protection against the early stage of diabetes mellitus and the development of complications. We investigated the effect of citrus bioflavonoids on blood glucose level, hepatic glucose-regulating enzymes activities, hepatic glycogen concentration, and plasma insulin levels, and assessed the relations between plasma leptin and body weight, blood glucose, and plasma insulin. The current results suggest that hesperidin and naringin both play important roles in preventing the progression of hyperglycemia, partly by increasing hepatic glycolysis and glycogen concentration and/or by lowering hepatic gluconeogenesis.

Naringin, a citrus flavonone, protects against radiation-induced chromosome damage in mouse bone marrow.
Mutagenesis. 2003 Jul;18(4):337-43.
Free radicals are responsible for the induction of damage to the cellular DNA that leads to the formation of chromosome aberrations. Antioxidants are known to scavenge free radicals, thereby decreasing the degree of such effects. Radiation is a well-known inducer of free radicals and compounds that can scavenge free radicals may reduce radiation-induced DNA damage. Naringin, a bioflavonoid predominant in grapefruit and other citrus fruits, has been found to scavenge free radicals, therefore it may also reduce radiation-induced damage. The aim of the present study was to evaluate the radioprotective action of 2 mg/kg naringin in the bone marrow of mice exposed to different doses of (60)Co gamma-radiation by scoring the frequency of asymmetrical chromosomal aberrations. The irradiation of mice resulted in a dose-dependent elevation in the frequency of aberrant cells, acentric fragments, chromatid and chromosome breaks, dicentrics and exchanges. All these aberrations were elevated with scoring time up to 24 h post-irradiation and declined thereafter, except chromatid breaks, which were maximum at 12 h post-irradiation. Treatment of mice with 2 mg/kg body wt naringin before exposure to various doses of gamma-radiation resulted in a significant reduction in the frequencies of aberrant cells and chromosomal aberrations like acentric fragments, chromatid and chromosome breaks, centric rings, dicentrics and exchanges. The evaluation of free radical scavenging activity of naringin revealed a dose-dependent scavenging of hydroxyl, superoxide and 2,2 equal to or precedes -diphenyl-1-picryl hydrazyl radical. Naringin at 5 microM scavenged the 2,2-azino-bis-3-ethyl benzothiazoline-6-sulphonic acid cation radical very efficiently, where a 90% scavenging was observed. Our study demonstrates that naringin can protect mouse bone marrow cells against radiation-induced chromosomal damage.

Naringin questions
Q. Hi Doctor, do you know of a brand of naringin or naringenin. I’ve been searching and can’t find anything. The amounts in some vitamin C / bioflavinoid complexes is too little.
   A. If you search google, you will find products that only contain naringin. We can't a product that only has narigenin.



Thanks for any information you know of.

Additional links
Tongkatali.net research
Tribulusterrestrisextract.com research
Yohimbebark.net research