Thorne Theanine

Looking for a premium L-Theanine supplement in Australia? This formula uses Suntheanine® — the patented, pure form of L-Theanine clinically studied for stress relief, calm focus, and relaxation without drowsiness.

Naturally sourced from green tea (Camellia sinensis), Suntheanine® has been shown to help balance mood, enhance alpha brain waves, and support neurotransmitter activity — making it ideal for managing stress, improving focus, and promoting a sense of calm clarity.

As an Australian-based retailer, we offer authentic L-Theanine with Suntheanine® at the best prices with fast delivery Australia wide.

Why Choose L-Theanine with Suntheanine®?

  • Patented Suntheanine® for superior purity & potency

  • Supports relaxation without sedation

  • Promotes mental clarity & calm focus

  • Enhances dopamine, serotonin & GABA activity

  • Clinically studied for stress & mood support

  • Fast Australia-wide shipping at unbeatable prices

Perfect for busy professionals, students, or anyone needing stress support — L-Theanine with Suntheanine® offers a gentle yet effective solution for daily calm and focus.

This formulation is vegan, gluten-free, and free from common allergens like soy and dairy.

Nutrition Capital is proud to be an approved Australian distributor of Thorne.

We dispatch all Thorne Research products from HERE in Victoria, Australia!

Save 4%

Size: 90 Capsules
Price:
$109.95 $114.95

Take 1 capsule one to three times daily or as recommended by your health professional.

  • Theanine, found almost exclusively in the tea plant, helps modify brain waves by increasing alpha-wave production. 
  • It also enhances brain neurotransmitters involved in stress management.

Always read the label. Follow directions of use. Please read the label to decide whether this product is right for you.

Consult with your relevant healthcare professional before taking supplements or vitamins, especially if you are currently taking medication. If symptoms transpire and persist, seek immediate advice from your relevant healthcare professional.

If pregnant, planning pregnancy, or breastfeeding, consult with your healthcare professional before using any health foods, functional foods, supplements or vitamins.

Supplements and vitamins should not be used by persons under the age of 16, unless the product is specifically designed for children or otherwise advised on by your healthcare professional.

Supplements, vitamins and minerals should never replace a balanced and varied diet.

Keep all supplements and vitamins out of reach of children. Always follow advised storage conditions and consumption instructions.

Do not exceed recommended daily dosage. Do not consume products if seals are broken or damaged. Do not consume products if best before or expiry dates have exceeded.

Some powdered products, including (but are not limited to) pre-workout, fat burners, single amino acids, pump/nitric oxide boosters, citrulline, agmatine, arginine and carnitine are naturally deliquescent products, or contain ingredients which are naturally deliquescent. Clumping or hardening of these products over time is a natural and common occurrence, and despite containing moisture absorption sachets, these products may still clump or harden over time.

Although extra care is taken to ensure all product Descriptive Information, Nutritional Information and Directions Of Use are kept up-to-date and current, manufacturers and suppliers may change product formulations and ingredients without warning, and may not advise of us these changes. Please understand Nutrition Capital endeavours to keep products updated with the latest and correct product information which the manufacturer or supplier has directly provided us.

If you are purchasing items which are prone to melting (including but not limited to, chocolate bars, protein bars, items with chocolate chips or pieces etc), or items which can easily be damaged (including but not limited to, chips, aluminium cans, glass vitamins etc), we strongly recommend you purchase Shipping Insurance with your order. Nutrition Capital takes no responsibility for items which are melted or damaged in transit, and we do not replace or refund any items which are damaged under these circumstances if they are not covered by Shipping Insurance. You can purchase Shipping Insurance at the cart/checkout page with your order.

Nutrition Capital also strongly recommends to not authorise “Authority to Leave” on your order if it contains items which can melt, due to the risk of these items being left in an unsuitably warm and sunny position by the courier.

Purchase of clearance and special items is final, we do not offer exchanges or refunds on these items.

Change of Mind

We understand that sometimes you might change your mind after placing an order. That's okay!

Our change of mind policy lasts for 7 days from the date of purchase. If more than 7 days have passed, unfortunately, we can't offer a refund or exchange.

To qualify for a return, your item must be unused and in the same condition as when you received it, including the original packaging. Please ensure you have your receipt or proof of purchase (order number).

Non-Returnable Items:

  • Perishable goods such as food and drinks
  • Gift cards
  • Some health and personal care items, such as towels and accessories
  • Sale and clearance items*

* Unfortunately sale or clearance items cannot be refunded outside of the Australian Consumer Laws.

 

Unsatisfactory Product (Taste or Performance)

If you're not satisfied with the taste or performance of a product, you can return the opened product (with 5 scoops or less used) to any of our stores or our online warehouse within 7 days of purchase for an exchange or store credit.

Please provide your receipt or proof of purchase (order number).

 

Faulty or Damaged Product

If you receive a faulty or damaged product, we will offer a full refundexchange, or store credit. Examples of faulty products include:-

  • Damaged product packaging
  • Products with no seal
  • Products that have clumped or hardened (within 30 days of purchase)

Please return the product within 30 days of purchase with your receipt or proof of purchase. In some cases, we may involve the manufacturer or supplier.

 

Please Note

All returns and refunds are handled on a case-by-case basis. 

All postage charges that incur with change of mind returns is at your expense. 

 

To initiate a return, refund or exchange.

To complete your return, please contact us outlining your request via email: hello@nutritioncapital.com.au

We require a receipt or proof of purchase such as an order number, as well as your Full Name and contact number.

Payment & Security

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Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.

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