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Amino Acids Powder Sleep & Recovery

HealthWise

L-Theanine 150 g

100% pure L-theanine powder without fillers or flowing agents

Choose a size Same formula, different pack size
60 g $35.00 150 g $60.00
Pack size
150 g
GTIN
09327808005008
Supplement Club price $60.00
RRP $69.95 Save $9.95 (14%)
Stock is sourced through an established Australian practitioner wholesaler. Availability checked
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Why it made the Edit

  • It fits easily into the bedtime drink I already make with glycine, so the routine is simple and repeatable.
  • The powder is almost tasteless to me and the single-ingredient label keeps the formulation transparent.
  • The 60 g jar is a sensible starting size, while the 150 g option is there for established regular use.
  • The research is promising rather than definitive, but that does not make lived or clinical experience meaningless. My own response is part of why it made the Edit; the uncertainty means I frame it as a careful, reviewable trial rather than a guarantee.

How I take it

  • I mix a measured amount into my bedtime drink alongside glycine.
  • The manufacturer suggests 1/4 to 1/2 teaspoon in warm water. One level 5 mL teaspoon is listed as approximately 2,000 mg, so the amount still needs to be measured thoughtfully rather than guessed.
  • Many human studies have used around 200 mg daily; the best dose and duration for sleep are not yet established.

My routine is a personal observation, not a universal sleep protocol. Dose, timing and suitability need individual consideration.

Studies that informed my choice

The effects of L-theanine consumption on sleep outcomes: A systematic review and meta-analysis Systematic review and meta-analysis · Bulman et al. 2025 Subjective sleep outcomes improved modestly, but pure L-theanine remains under-studied. Across 19 randomised-trial reports with 897 participants, the review found small improvements in subjective sleep-onset latency, daytime dysfunction and overall sleep-quality scores. The authors also highlighted the limited number of studies using pure L-theanine and the uncertainty around dose and duration. Effects of L-Theanine Administration on Stress-Related Symptoms and Cognitive Functions in Healthy Adults: A Randomized Controlled Trial Randomised crossover trial · Hidese et al. 2019 A small trial gives a useful dose reference, not a definitive insomnia result. Thirty healthy adults received 200 mg daily or placebo for four weeks. Some Pittsburgh Sleep Quality Index subscales improved during L-theanine use, but the sample was small, the ingredient supplier funded the study and employed two authors, and the result does not establish an ideal bedtime dose or show that it applies to persistent insomnia.

These papers are one part of the recommendation. Research helps set confidence and boundaries; clinical experience and individual response help decide whether a careful trial is worthwhile. The recommendation may change as those inputs change. These studies are not brand-specific outcome evidence.

Formula

Ingredient Per level 5 mL teaspoon
L-Theanine 2,000 mg per level 5 mL metric teaspoon
Does not contain fillersflowing agentsglutendairyflavourssweeteners

Use and cautions

How the label frames use

  • Dissolve 1/4 to 1/2 teaspoon in a small amount of warm water.
  • The manufacturer suggests taking it away from meals, or with tea or coffee when used for calm alertness.

Warnings

  • This product is sold as a supplemental food only.
  • Always read the label and follow the directions for use.
  • Seek individual advice during pregnancy or lactation, when using medicines, or when sleep problems are persistent or worsening.

Manufacturer link

At a glance

A transparent single-ingredient L-theanine powder that is easy to add to an existing evening routine. Human sleep evidence is encouraging but modest. My own experience supports considering it as a careful trial, while the research uncertainty keeps the recommendation provisional and individual.

Consider pregnancy, lactation, blood pressure, sedating medicines or alcohol, other sleep products, and whether ongoing sleep difficulty needs assessment rather than another supplement.

  • Single-ingredient L-theanine powder
  • Available in 60 g and 150 g jars
  • No fillers or flowing agents
  • Vegan and free from gluten and dairy
Source note: HealthWise manufacturer information was checked 31 August 2026. Evidence was checked against current human reviews and trials. Stock is sourced through an established Australian practitioner wholesaler. Product information is general only and does not replace personalised advice.