Pure Encapsulations L-Theanine is a food supplement in vegetarian capsule form, providing 200mg of Suntheanine, a patented form of the amino acid L-theanine, in each capsule. Each pack contains 60 capsules.

Key Features

• High-purity Suntheanine: each capsule provides 200mg of Suntheanine, a patented, fermentation-produced form of L-theanine standardised to over 99.5% purity, matching the L-theanine naturally found in tea leaves.
• Dosing guidance for adults and children: the label gives separate suggested doses for adults and for children aged 8 to 18, which many single-ingredient supplements don't offer.
• Certified gluten-free and non-GMO: the product is certified gluten-free by the Gluten-Free Certification Organization and made without genetically modified ingredients.
• Hypoallergenic formulation: the capsule shell and added ingredients are limited to cellulose, water and a hypoallergenic plant fibre.

What is Suntheanine?

Suntheanine is a branded, high-purity form of L-theanine, an amino acid naturally found in tea leaves. It's produced using a patented fermentation process and is standardised to over 99.5% purity.

How long will one pack of L-Theanine last?

Each pack contains 60 capsules. Depending on how often you take it, a pack lasts between 10 and 30 days for an adult using the suggested dosing range.

Can children take this L-Theanine supplement?

The label gives a suggested dose for children aged 8 to 18. The manufacturer does not provide dosing guidance for children under 8, so speak to a doctor before giving this supplement to a younger child.

Can I take L-Theanine if I'm pregnant or breastfeeding?

Speak to a doctor or pharmacist before taking L-Theanine if you are pregnant, breastfeeding, have a health condition, or are taking any medication.

Each capsule provides:

Other ingredients: vegetarian capsule (cellulose, water), hypoallergenic plant fibre (cellulose).

L-theanine is an amino acid naturally found in tea leaves. The Suntheanine used in this product is produced using a patented fermentation process and is standardised to over 99.5% purity, matching the L-theanine form found naturally in tea.

Adults: take 2 capsules, 1 to 3 times daily, between meals. Children aged 8 to 18: take 1 capsule, 1 to 2 times daily, between meals. Dosing for children under 8 is not specified by the manufacturer. Store in a cool, dry place, out of reach of children.

Food supplements should not be used as a substitute for a varied and balanced diet. If you are pregnant, breastfeeding, have a health condition or are taking any medication, speak to a doctor or pharmacist before taking L-Theanine. L-theanine may add to the effect of medicines that lower blood pressure or cause drowsiness, so tell your doctor if you take this type of medication before starting L-Theanine. Keep out of reach of children.

L-theanine is generally well tolerated at the recommended dose. A small number of people report mild side effects such as headache or drowsiness. This is not a complete list of possible side effects. Stop taking the supplement and seek medical advice if you experience a reaction you're concerned about.