Chill Pill

• L-Theanine: 200 mg
• GABA (Gamma-Aminobutyric Acid): 100 mg
• Apigenin (from Chamomile Extract, whole herb): 50 mg

Other ingredients: microcrystalline cellulose, hypromellose (capsules), stearic acid from palm.

L-theanine. An amino acid found in tea leaves, and the most-studied ingredient in the formula. Brain-wave studies show it increases alpha activity, the pattern linked to calm, wakeful focus. In a 4-week randomized, placebo-controlled trial in healthy adults, L-theanine improved self-reported stress measures and sleep quality, including how quickly people fell asleep.†¹ A separate placebo-controlled study in pharmacy students during a demanding training period found lower stress markers in saliva and lower self-rated stress.†² We use 200 mg per serving, the amount most commonly studied, so two servings a day lands at 400 mg, the top of that range.

GABA. GABA is the brain’s main “slow down” messenger, the counterweight to the excitatory signals that keep you wired. Ours is made the old-fashioned way, by fermenting rice. In small human studies, 100 mg of oral GABA increased alpha brain waves³ and was linked to falling asleep faster.†⁴ Full transparency: scientists still debate how much oral GABA reaches the brain, and current thinking points to the gut-brain connection.⁵ The studies are small, so we call this promising, not proven.

Apigenin from chamomile. Apigenin is a plant compound found in chamomile, parsley, and celery, and it’s the one researchers point to when they study chamomile’s calming reputation. Lab research shows it interacts with the same receptor family GABA works through.⁶ Here’s the honest part: most of that mechanism work comes from lab and animal studies, and human research so far is mostly on chamomile itself, not apigenin alone. In one large observational study, people who ate more apigenin-containing foods reported better sleep quality, though observational data can’t show cause and effect.⁷ Our 50 mg is far more than you’d get from a cup of tea (most diets provide around 0.5–4 mg a day).

Better together. GABA and L-theanine have also been studied as a pair, in an early exploratory study looking at sleep quality.†⁸

Each ingredient was chosen to support the body’s relaxation and sleep pathways from a different angle: L-theanine for a calm, focused state, GABA for the brain’s built-in brake, and apigenin for the receptors that brake works through.†

A cup of chamomile tea can vary a lot depending on the flowers, the bag, and how long it steeps. Using measured, standardized amounts means your 30th serving matches your first.

Chill as a finished formula hasn’t been studied in its own clinical trial (yet). Each ingredient has its own human research, and two have been studied together.

1. Hidese S, Ogawa S, Ota M, et al. (2019). Effects of L-theanine administration on stress-related symptoms and cognitive functions in healthy adults: A randomized controlled trial. Nutrients, 11(10), 2362. doi:10.3390/nu11102362
2. Unno K, Tanida N, Ishii N, et al. (2013). Anti-stress effect of theanine on students during pharmacy practice: Positive correlation among salivary α-amylase activity, trait anxiety and subjective stress. Pharmacology Biochemistry and Behavior, 111, 128–135. doi:10.1016/j.pbb.2013.09.004
3. Abdou AM, Higashiguchi S, Horie K, et al. (2006). Relaxation and immunity enhancement effects of γ-aminobutyric acid (GABA) administration in humans. BioFactors, 26(3), 201–208. doi:10.1002/biof.5520260305
4. Yamatsu A, Yamashita Y, Pandharipande T, Maru I, Kim M. (2016). Effect of oral γ-aminobutyric acid (GABA) administration on sleep and its absorption in humans. Food Science and Biotechnology, 25(2), 547–551. doi:10.1007/s10068-016-0076-9
5. Hepsomali P, Groeger JA, Nishihira J, Scholey A. (2020). Effects of oral gamma-aminobutyric acid (GABA) administration on stress and sleep in humans: A systematic review. Frontiers in Neuroscience, 14, 923. doi:10.3389/fnins.2020.00923
6. Kramer DJ, Johnson AA. (2024). Apigenin: A natural molecule at the intersection of sleep and aging. Frontiers in Nutrition, 11, 1359176. doi:10.3389/fnut.2024.1359176
7. Godos J, Ferri R, Castellano S, et al. (2020). Specific dietary (poly)phenols are associated with sleep quality in a cohort of Italian adults. Nutrients, 12(5), 1226. doi:10.3390/nu12051226
8. Konno H, Naganuma K, Kamada Y. (2026). Effects of combined GABA and L-theanine supplementation on sleep quality: An exploratory study. European Review for Medical and Pharmacological Sciences, 30(1), 37–45. doi:10.26355/eurrev_202601_37647

Either, or both! Take 2 capsules in the morning to take the edge off, 30–60 minutes before bed as part of your wind-down routine, or one serving at each. Up to 2 servings per day, or as directed by your healthcare provider.

It might, and everyone responds a little differently. Try your first serving in the evening, and don’t drive or operate machinery until you know how Chill affects you.

Nope. Chill is melatonin-free. It’s built around L-theanine, GABA, and apigenin from chamomile, which support your body’s own relaxation pathways.†

If you take any medication (especially sedatives, sleep aids, or blood pressure medication), have a health condition, or are scheduled for surgery, check with your healthcare provider before use. Avoid combining Chill with alcohol or other products that cause drowsiness.

Chill is not recommended during pregnancy or breastfeeding, and it’s formulated for adults 18+.