L-THEANINE Natural Forte addresses the multifactorial nature of modern exhaustion through targeted neurochemical intervention. Chronic fatigue, insomnia, and stress-related conditions stem from diverse aetiologies—occupational pressure, sedentary lifestyles, nutritional deficiencies, and psychological stressors—all converging to dysregulate the nervous system and compromise physical and mental health. This premium formulation harnesses L-theanine's unique pharmacological mechanism: selective inhibition of glutamate receptors in the central nervous system. By modulating excitatory neurotransmission, L-theanine promotes genuine psychophysiological relaxation whilst preserving cognitive alertness—a critical distinction from sedating alternatives that impair daytime function. ZeinPharma's botanical source—premium tea leaf extract from Sichuan province—delivers naturally concentrated L-theanine alongside complementary polyphenols, creating a synergistic complex superior to isolated synthetic amino acids. This whole-plant approach supports the body's intrinsic stress-response mechanisms rather than merely masking symptoms. Particularly valuable for working professionals experiencing cumulative occupational stress, sedentary-related fatigue, and time-constrained nutrition, L-THEANINE Natural Forte provides evidence-based support for stress-related disease management. The formulation also benefits those navigating psychological stressors—family difficulties, health challenges, or metabolic concerns—that perpetuate exhaustion cycles. The 90-capsule supply enables consistent supplementation, allowing L-theanine's cumulative neurological benefits to manifest fully. This represents a sophisticated, non-habit-forming approach to restoring nervous system equilibrium and reclaiming vitality during demanding life phases.

 

L-Theanine occurs naturally in only three species of the tea plant ( Camellia sinensis, Camellia japonica and Camellia sasanqua ) and in the chestnut boletus ( Xerocomus badius) . Since the L-Theanine is mainly only found in the leaves, the L-Theanine Natural Forte containsCapsules 500 mg of pure leaf extract, equivalent to 6,000 mg of green fresh tea leaves. With over 40% L-theanine in the leaf extract, our capsules contain the highest possible natural proportion of this amino acid. Green tea, on the other hand, only contains 1-2 percent L-theanine, which means you would need to drink 60 cups to get the same effect. However, with the green tea you also take in large amounts of caffeine, which counteracts the relaxing effect of L-theanine. When buying L-theanine preparations, be careful not to succumb to any attempt at deception. Because there are many preparations on offer that suggest an L-theanine content of well over 40%. This is not possible on a natural basis. Also contain L-Theanine Natural ForteCapsules at least 30% polyphenols. These secondary plant substances protect the plants from oxidative stress and predators.You too can benefit from the relaxing effect of L-theanine and the diverse positive properties of polyphenols.

Make sure you only consume natural theanine, because the L-form is predominantly formed in the plants and the D-form, which has no known function, is almost completely broken down. On the other hand, when theanine is produced synthetically, both forms are present in the same 50:50 ratio. Thus, synthetic theanine preparations only have a 50% effectiveness.

Furthermore, the amino acid has a mild taste. So the capsules can be opened to let the powder dissolve in the mouth or to dissolve it in water. Because L-theanine in higher doses is likely to compete with other amino acids for passage through the blood-brain barrier, it should not be taken with high-protein foods. Of course, the L-Theanine Natural Forte from ZeinPharma® is also suitable for vegetarians and vegans.

L-theanine is structurally related to the endogenous amino acid L-glutamic acid, which plays an important role in the transmission of nerve impulses in the brain.

A recent study suggests that L-theanine is absorbed from the small intestine, into the bloodstream, and sent to the brain within 10 to 24 minutes. There it passes the blood-brain barrier to the nerve cells and can quickly develop its positive effects in the brain.

In addition, with our L-Theanine Natural Forte capsules , we offer you a preparation that is well tolerated by gastric acid and that reaches the small intestine without any problems and without any loss of active ingredients. If you prefer a low dose, also check out our L-Theanine 250 mg!

• For the diet management of chronic states of exhaustion and stress-related illnesses    

• Contains over 40% natural L-Theanine    

• Rapid bioavailability    

• Additional polyphenol content of at least 30%    

• Suitable for vegetarians and vegans 

L-Theanine Natural forte 500 mg (90 capsules)
Dietary Supplement

Overwork, insomnia and chronic fatigue are serious conditions that can lead to physical and mental illness. Mental stress such as family and professional problems, illnesses or being overweight can lead to you being exposed to constant exhaustion. The amino acid L-theanine promotes mental and physical relaxation and thus reduces your feeling of stress.

L-Theanine occurs naturally in only three tea plants and is found primarily in the leaves. The L-Theanine Natural forte capsules contain 500 mg of the pure leaf extract, which corresponds to approx. 6000 mg of fresh green tea leaves. With over 40% L-Theanine, they offer the highest possible natural proportion of this amino acid. A significantly higher content of L-theanine is naturally not possible. In addition, L-Theanine Natural forte capsules contain at least 30% polyphenols.

In contrast to synthetic theanine, which contains 50% each of the D-form and L-form, plant-based theanine contains almost exclusively the L-form. Because D-theanine has no physiological potency, synthetic theanine is only 50% effective.

Since L-Theanine is absorbed through the small intestine within ten to 24 minutes, enters the bloodstream and is sent from there to the brain, our L-Theanine Natural forte capsules have a very high bioavailability.

5 advantages of L-Theanine Natural forte 500 mg from ZeinPharma:

• Relaxes without making you tired
• Rich in natural L-Theanine and polyphenols
• Rapid bioavailability
• Green tea extract from controlled cultivation
• Suitable for vegetarians and vegans Dietary

supplements are not a substitute for a balanced and varied diet and a healthy lifestyle.

dietary supplements. The recommended daily consumption must not be exceeded.

Dietary supplements are not a substitute for a balanced, varied diet and a healthy lifestyle.

Keep away from children!