L-Theanine & GABA: A Guide to Daytime Calm Supplements
L-theanine and GABA are two of the most popular ingredients in calm and relaxation supplements. They are often combined with vitamin B6 and sold as a daytime alternative to sleep products. This guide explains what each ingredient is, how they differ from melatonin, and when people typically use them.
L-Theanine: The Calm in Your Tea
L-theanine is an amino acid found naturally in tea leaves, especially green tea. It is one reason why a cup of tea feels different from a cup of coffee. L-theanine is one of the fastest-growing supplement searches in the US, as more people look for calm and focus support during busy days. It is often described as non-sedating, which means it is used during the day, not only in the evening.
GABA
GABA (gamma-aminobutyric acid) is an amino acid that occurs naturally in the body. It is also found in fermented foods such as kimchi, miso and some teas. In supplements, GABA is often paired with L-theanine in calm formulas.
Vitamin B6
Vitamin B6 contributes to normal energy-yielding metabolism and to normal psychological function. It is found in poultry, fish, potatoes, chickpeas and bananas, and is a common partner in calm and mood formulas.
L-Theanine + GABA vs. Melatonin
- Melatonin is the body's evening "darkness signal". It is an evening product, meant for bedtime routines.
- L-theanine and GABA are amino acids people use during the day, for example before a meeting, during travel or while winding down after work.
Different tools for different moments. Read our melatonin guide for evening use.
When Do People Use Calm Strips?
- Before a presentation or meeting
- During travel and long flights
- As part of an after-work wind-down
- As a caffeine-free moment in a busy day
Tip: L-theanine is also popular together with coffee, because tea naturally contains both. More in Caffeine + L-Theanine.
Habits That Help
Supplements are one piece. Breathing exercises, a short walk, less caffeine late in the day, good sleep and talking to someone you trust matter a lot. If stress or anxiety affects your daily life, please talk to a doctor or mental health professional.
Who Should Be Careful?
Talk to your doctor before use if you are pregnant or nursing, under 18, have a medical condition, or take medication, especially for mood, anxiety, sleep or blood pressure.
Checklist Before You Buy
- How many mg of L-theanine and GABA?
- Is it sugar-free?
- Is it caffeine-free?
- Is it vegan and gluten-free, if that matters to you?
- Is it made in a GMP-certified facility?
Our Relax Strips
SUPPLI-X Relax Strips contain 50 mg green tea L-theanine, 25 mg GABA and 6 mg vitamin B6 per strip. Strawberry-peppermint flavor, sugar-free with monk fruit and stevia, vegan, gluten-free, no water needed. 30 strips, made in a GMP-certified, NSF-registered facility. One strip a day.
Prefer a gummy? See our guide to reishi and L-theanine gummies. Curious about strips in general? Read Oral Strips Explained.
FAQ
What is L-theanine?
An amino acid naturally found in tea leaves, especially green tea, popular in calm and focus supplements.
Does L-theanine make you sleepy?
L-theanine is generally described as non-sedating and is used during the day.
What is the difference between GABA and melatonin?
GABA is an amino acid used in daytime calm formulas. Melatonin is the body's evening hormone, used in bedtime routines.
Can I take L-theanine with coffee?
Yes. Tea naturally contains both caffeine and L-theanine, and many people combine them.
These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease. If you are pregnant, nursing, taking medication or have a medical condition, talk to your healthcare provider before use.


