L-Theanine Ingredient Notes

L-theanine is an amino acid from tea often searched with calm focus, caffeine pairing, and relaxation keywords.

This page is for general reference only and is not medical advice, diagnosis, treatment, or prescription. Ask a qualified professional if you need medical advice or diagnosis.

What is L-Theanine?

L-theanine is an amino acid from tea often searched with calm focus, caffeine pairing, and relaxation keywords.

On Supplecipe, you can search iHerb products that mention L-Theanine and compare single-ingredient products against broader supplement blends.

Why people search L-Theanine

• People often compare standalone theanine with caffeine-theanine blends.
• Timing and dose are common discussion points.
• It is frequently paired with magnesium or melatonin in evening routines.

L-Theanine benefits people commonly look up

• People often compare standalone theanine with caffeine-theanine blends.
• Timing and dose are common discussion points.
• It is frequently paired with magnesium or melatonin in evening routines.

Forms and other names

L-Theanine may also appear on labels as Theanine. Searching by both the common name and label name can reveal more products.

Related ingredients

L-Theanine is often searched together with Magnesium, Melatonin, Ashwagandha.

Side effects and cautions

• It may cause drowsiness in some people.
• It is not a treatment for anxiety or sleep disorders.

How to compare iHerb products

• Check the active ingredient amount per serving, not only the front-label claim.
• Look for form, serving size, extra ingredients, allergens, and whether the product is a single ingredient or a blend.
• Compare brand, price per serving, ingredient form, and single-ingredient versus complex products.
• Use the search button below to compare iHerb products that mention this ingredient.