Theanine is a fast-acting, non-sedative relaxant that reduces the impact of excitatory pathways in the brain. Each capsule contains the same amount of theanine found in 15-20 cups of green tea.
- Anybody looking to unwind.
- Anybody looking to relax but maintain performance and clarity.
- Acute stressors such as public speaking or travelling.
Most l-theanine found in food supplements is synthetic (e.g. Suntheanine) and it’s produced as a racemic using ethylamine and l-glutamine and a multi-stage synthesis. The theanine in our 250mg capsules is extracted from green tea from the mountainous region of Hunan Province in South Central China. We keep it as pure as possible so you won’t find additives such as lemon balm whose mechanism of action, ability to enter the brain or synergistic benefit is unknown.
how it works;
Human studies show that theanine stimulates increases in Alpha brain waves which are indicative of a relaxed but alert mental state . The type of brain wave activity is often referred to as wakeful relaxation  exhibiting increased creativity and increased performance under stress as well as decreased anxiety .
- It is absorbed into the bloodstream and enters the brain through the leucine-preferring amino acid transporter system .
- Its relaxation effect leads to increased GABA concentrations which result in general feelings of calm and wellbeing . Unlike other conventional calming treatments it does not result in increased drowsiness, slowed reflexes or impaired concentration .
Why do you isolate theanine from green tea?
Theanine is the major amino acid in green tea and constitutes 1-2% of the dry weight of the leaves. To obtain sufficient levels of theanine for a therapeutic dose from whole green tea powder would also result in high levels of caffeine which can produce laxative effects, tannins which can cause stomach irritation & nausea on an empty stomach, and increased amounts of certain antioxidants that can hinder iron absorption.
A 2017 review of studies notes that high levels of simple green tea extract have been associated with liver damage, jaundice, acute-hepatitis like injuries and even liver failure from catechins within green tea. 
What should I notice?
Relaxation without sedation.
Oral administration of 200mg of theanine in men aged 20-25 years old also resulted in a reduction in the heart rate. 
How long does it take to have an effect?
In human studies, increased alpha waves were generated 15 minutes after oral administration  and it has been shown to influence the secretion and function of neurotransmitters 30 minutes after ingestion . Theertham et al suggest maximum uptake in the brain is usually within 30-40 minutes. 
How do I take it?
1 capsule with a glass of water. Max 2 per day.
Does it help with cognition?
In human studies, theanine alone has shown virtually no positive effects on performance. However, 250mg of theanine has been found to positively interact with caffeine to enhance reaction time, the accuracy of rapid information processing, mental fatigue and tiredness.  This combination also enhanced the speed of rapid information processing, sentence verification and word recognition reaction time when caffeine alone did not. 
Will it make me sleepy?
No. It does not promote the onset of melatonin and it is not a sedative. Sleep inducers and sedatives normally induce drowsiness or sleep within an hour  whereas theanine, which achieves its maximum uptake in the brain within 30–40 minutes does not induce any sleep or drowsiness in the subjects .
Are there any side effects or contraindications?
Anybody taking medication for high blood pressure should consult their GP. If you have low blood pressure, discuss theanine with your healthcare provider before starting it.
theanine 99%, vegetable cellulose capsule, bulking agent; rice bran flour
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