Wow, this is high praise. I'm skeptical only because I have never heard of it before and I have been interested in nootropics for SA for over a year now. Do you think that it happens to be especially effective to you? Or do you think it simply has not been discovered by a wide audience yet? Also is it really that much different than L-theanine?
Suntheanine > regular L-theanine.
I've compared Suntheanine and regular L-theanine on multiple occasions and they are most definitely NOT the same.
For me, a moderate dose of Suntheanine will act almost like a benzodiazepene without the terrible side effects.
Regular L-theanine will make me feel messed up and groggy.
Suntheanine is actually the best and most sustainable treatment for anxiety that I've ever found, and I've tried everything from ketamine to phenibut to racetams to benzodiazepenes to opiates. Suntheanine is simply the most sustainable of all of them.
I found this information while researching.
Study Reveals Difference Between Suntheanine® and Other Brands
Dr. Daniel Armstrong, a Caldwell Professor of Chemistry at Iowa State University, and his analysis team reviewed a number of commercially available brands that claimed to contain pure L-theanine. Results revealed that a number of brands contained ingredients other than L-theanine.
"We found all of those tested that are made through chemical synthesis or claiming to be extracted from green tea actually have about 50 per cent present as D-theanine," explains Dr. Armstrong, adding that "the only material that proved to be pure L-theanine was the Suntheanine® brand, produced via biofermentation, which had more than 99.95 per cent L-theanine, our current detection limit".
Suntheanine® is the patented form of L-theanine and the trademark of Taiyo International, the company that originally isolated the amino acid into an effective supplement for consumers.
And then this one
L-theanine Must be Pure for Proper Absorption, Study Finds
A new study finds that L-theanine must be administered in its pure form rather than as the mixture of D-theanine and L-theanine found in many nutritional supplements in order to be absorbed by the body.
Researchers from Iowa State University orally administered to rats pure L-theanine, pure D-theanine, and an ingredient commercially marketed as ?L-theanine? that actually was a racemic mixture (a 50:50 split between D- and L-theanine). They then measured blood concentrations, urinary excretion, and a marker of theanine metabolism in the blood.
The results show that the animals? bodies had a preference for pure L-theanine and that the pure form is better absorbed in the gut. The concentration of L-theanine seen in the blood was greater with the pure L-theanine than it was with the racemic mixture. There was also a trend toward greater urinary excretion of L-theanine when consumed as the racemic form.
The majority of clinical and animal studies determining the bioavailability of L-theanine have used Suntheanine, a form of pure L-theanine.
Simple HPLC analysis cannot discriminate between D- and L-theanine yet a number of companies are relying upon this method to assert that they have the pure L-isomer, declared Scott Smith, Vice President of Taiyo Kagaku, the manufacturer of Suntheanine in Minneapolis. The patented enzymatic synthesis method locks in the L-isomer and thus gives us pure L-theanine every batch. Suntheanine is an elegant example of where chemistry dictates biology.?
Desai MJ, Gill MS, Hsu WH, Armstrong DW. Pharmacokinetics of theanine enantiomers in rats. Chirality. 2005 Mar;17(3):154-62
I have found some L theanines work well and others barely any effect. Now I guess I know why.