L-Theanine

L-theanine is an amino acid naturally found in the leaves of the tea plant (Camellia sinensis) and in certain mushrooms. It is commonly used in tea and dietary supplements.

Role in relaxation and focus

L-theanine is traditionally associated with a sense of calmness and focus. It is often combined with caffeine in tea, a widely used combination in various cultures.

Sources of L-theanine

L-theanine naturally occurs in:

Tea: Both green and black tea contain L-theanine.
Mushrooms: Certain species, such as Boletus badius, also contain L-theanine.

The concentration of L-theanine may vary depending on the type of tea and its preparation method.

Forms and usage

Capsules or tablets: For easy dosing and intake.
Powder: Can be added to beverages or food.

Products with L-Theanine

Product	Form	Standard dosage
Do Not Age SureSleep Powder	L-theanine	400 mg per 4 grams
Qualia Qualia Mind 2.0	L-Theanine	200 mg per 6 capsules
Qualia Qualia Mind Caffeine Free 2.0	L-Theanine	200 mg per 6 capsules
Bulletproof Zen Mode	L-theanine [Suntheanine®]	200 mg per 3 capsules
Natural Stacks Smart Caffeine	L-Theanine	198 mg per 1 capsules
Life Extension L-theanine 100 mg	Suntheanine® (as L-theanine)	100 mg per 1 capsules
Performance Lab Mind Lab Pro	L-Theanine	100 mg per 2 capsules
Qualia Qualia Night	L-theanine	50 mg per 4 capsules

Product	Do Not Age SureSleep Powder
Form	L-theanine
Standard dosage	400 mg per 4 grams

Product	Qualia Qualia Mind Energy Shot
Form	L-Theanine
Standard dosage	200 mg per 60 ml

Product	Qualia Qualia Mind 2.0
Form	L-Theanine
Standard dosage	200 mg per 6 capsules

Product	Qualia Qualia Mind Caffeine Free 2.0
Form	L-Theanine
Standard dosage	200 mg per 6 capsules

Product	Bulletproof Zen Mode
Form	L-theanine [Suntheanine®]
Standard dosage	200 mg per 3 capsules

Product	Natural Stacks Smart Caffeine
Form	L-Theanine
Standard dosage	198 mg per 1 capsules

Product	Life Extension L-theanine 100 mg
Form	Suntheanine® (as L-theanine)
Standard dosage	100 mg per 1 capsules

Product	Performance Lab Mind Lab Pro
Form	L-Theanine
Standard dosage	100 mg per 2 capsules

Product	Qualia Qualia Night
Form	L-theanine
Standard dosage	50 mg per 4 capsules