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Eur J Drug Metab Pharmacokinet. 2007 Apr-Jun;32(2):75-9.
Pharmacokinetics of astragaloside iv in beagle dogs.
Zhang Q, Zhu LL, Chen GG, Du Y.
College of Life Science and Pharmacy, Nanjing University of Technology, Nanjing, People's Republic of China.
[email protected]
In this study, the pharmacokinetics of Astragaloside iv (AGS-IV) in Beagle dogs was studied by high performance liquid chromatography (HPLC) coupled with tandem mass spectrometry (MS). The concentrations of the drugs in plasma were determined after i.v. administration of 0.5, 1, 2 mg.kg(-1) AGS-IV and p.o. administration of 10 mg.kg(-1) AGS-IV. The areas under concentration-time curve (AUC) were linearly correlated to the doses administrated.
The absolute bioavailability of AGS-IV after p.o. administration was found to be 7.4%. The plasma protein binding rate of AGS-IV was about 90% within a concentration range of 250-1000 ng.ml(-1). There was no significant species difference regarding the pharmacokinetics of AGS-IV between the rat and the Beagle dog.
PMID: 17702194
Eur J Drug Metab Pharmacokinet. 2006 Jan-Mar;31(1):5-10.
Absorption enhancement study of astragaloside IV based on its transport mechanism in caco-2 cells.
Huang CR, Wang GJ, Wu XL, Li H, Xie HT, Lv H, Sun JG.
Drug Metabolism and Pharmacokinetic Research Center, China Pharmaceutical University, Nanjing, People's Republic of China.
The purpose of this study was to investigate the transport characteristics and mechanisms for discovering the possible causes of the low bioavailability of astragaloside IV and to develop an absorption enhancement strategy. Caco-2 cells used as the in vitro model. Results showed a low permeability coefficient (3.7 x 10(-8)cm/s for transport from the AP to BL direction), which remained unchanged throughout the concentration range studied, indicating that the transport of astragaloside IV was predominantly via a passive route. The AP to BL transport of astragaloside IV was found to be highly sensitive to the extracellular Ca2+ concentration, which suggested that its transport may be via a paracellular route. Both chitosan and sodium deoxycholate can increase the permeation efficiency of astragaloside IV. This study indicated that astragaloside IV having a low fraction dose absorbed in humans mainly due to its poor intestinal permeability, high molecular weight, low lipophilicity as well as its paracelluar transport may directly result in the low permeability through its passive transport. Meanwhile, chitosan and sodium deoxycholate can be used as absorption enhancers based on its transport mechanism.
PMID: 16715776
TA65 is: Cycloastraganol 5.44 mg/serving and Astragaloside IV .27 mg/serving
Super-Absorption Astragaloside IV 98% = Astragalus IV-VII, Cycoastragenol & Bacosides, Bacopasides ingredients
My experiences:
Benefits:
1) Strong feeling of well being, feeling youthful and optimistic
2) More active/ energy, enjoy exercising
3) More driven to get projects completed
4) Better eyesight (colour, contrast and sharpness)
5) Increased libido
6) Reduction in wart sizes (warts that were perhaps 8 or less years old shrunk dramatically)
7) Appreciate music more - can now hear conversations in noisy environments easily
8) Stronger hair growth
9) Bitter foods seem to taste more bitter
Side effects:
1) Temporarily can causes a loss of short recall memory - goes away a few days after stopping.
2) Occasional indigestion
3) Increased energy and brain function can cause "early awakening" making it difficult to go back to sleep.
4) Strange skin wart or spot flares up then disappears