Caffeine + L-Theanine

Suggested Use

Suggested use: Adults; as a dietary supplement; take one (1) capsule daily with 8-12 ounces of water.

• 

  TransformHQ Caffeine & L-Theanine 180 Caps

  iHerb4.7(58)

  $14.95
• 

  TransformHQ Boost Shot Energy Drink Mix Blue Raspberry

  Walmart - eSupplements, llc4.6(2500)

  $29.99
• 

  Nutricost Caffeine + L-Theanine Capsules

  Target4.7(927)

  $13.95
• 

  Transformhq Bubble Boost Fizzy Energy Drink Mix 21 Packets

  Walmart - eSupplements, llc4.5(64)

  $19.99
• 

  Sports Research L-Theanine & Caffeine Softgels

  Sports Research4.8(265)

  $22.95
• 

  Vitamatic L-Theanine Nootropic Supplement

  Vitacost.com4.8(78)

  $16.15
• 

  Nootropics Depot Caffeine + L-Theanine Capsules

  Nootropics Depot4.5(14)

  $13.99
• 

  TransformHQ Longevity Brain Support Supplement

  Walmart - eSupplements, llc4.8(8)

  $19.99

Enter your city or ZIP code to find supplement & health stores in your area that may carry this product.

Showing representative supplement & health retailers — search above for stores in your area.

• GNC

  4.2 (41)

  Vitamin & supplements store

  7826 E Ridge Rd, Hobart, IN 46342

  Directions(219) 962-4468

• At Nature's Door

  4.6 (48)

  Vitamin & supplements store

  5830 US-6, Portage, IN 46368

  Directions(219) 762-7025

• The Vitamin Shoppe

  4.4 (117)

  Vitamin & supplements store

  2217 E 80th Ave, Merrillville, IN 46410

  Directions(219) 756-0599

• Power Nutrition

  4.6 (116)

  Health food restaurant

  6455 US-6, Portage, IN 46368

  Directions(219) 706-9944

• Capitol Nutrition, Supplements & Vitamins Store

  5.0 (208)

  Vitamin & supplements store

  1108 W Lincoln Hwy, Schererville, IN 46375

  Directions(219) 865-1212

• Indiana Nutritional Drinks

  4.7 (18)

  Vitamin & supplements store

  819 W Chicago Ave, East Chicago, IN 46312

  Directions(773) 732-4917

• Nature's Cupboard

  4.8 (39)

  Vitamin & supplements store

  761 Indian Boundary Rd #3, Chesterton, IN 46304

  Directions(219) 926-4647

• GNC

  4.6 (106)

  Vitamin & supplements store

  2268 W US Hwy 30, Valparaiso, IN 46383

  Directions(219) 462-9944

• Neuroprotection by radical avoidance: search for suitable agents

  R Hardeland - Molecules, 2009 - mdpi.com

  … L-Theanine and several amphiphilic nitrones are capable of … seen in relation to impairments of health as they are frequently … outbalanced in the tea by caffeine—and several changes in …

  200977 citations

• Phytochemical and Fungal Bioactive Compounds in the “Brain Health Triad”: A Narrative Review on Neurostimulating, Neurotrophic, and Neuroprotective …

  GL Cipriano, I Raffaele, A Floramo… - International …, 2026 - pmc.ncbi.nlm.nih.gov

  20261 citations

• Research progress on food functional factors for sleep improvement.

  J Tang, G Li, F Tian, Y Feng, H Zhang, L Zhu - 2026 - cabidigitallibrary.org

  … Abstract: Sleep disorders have become a global health issue, … foods for sleep health and promoting the transformation and … L-Theanine and neumentix mixture improves sleep quality …

  2026

• Green tea's EGCG: brewing hope in the battle against breast cancer

  M Kumar, R Lal, A Sehgal, S Rawat… - The Natural Products …, 2026 - benthamdirect.com

  20261 citations

• L-Theanine an astounding amino acid in tea, its synthesis and health benefits: A review

  U Saha, P Gupta, M Singh - J. Int. J. Biochem. Res. Rev, 2024 - researchgate.net

  … “LTheanine can be easily separated from caffeine, … L-Theanine showed a positive effect on betterment of mental and cognitive health by supporting healthy sleep patterns, which in turn …

  20244 citations

• THE EFFECT OF TOLPERISONE AND L-THEANINE ON GLUTAMATERGIC NEUROTRANSMISSION

  PP Lakatos - 2023 - repo.lib.semmelweis.hu

  … L-Theanine is a dietary supplement and major component of tea leaves, that … of L-theanine normalized by time of incubation and cell count. All data points represent mean of L-theanine …

  2023

Data sourced from the U.S. National Institutes of Health, Office of Dietary Supplements Dietary Supplement Label Database (DSLD) · Label entered 2023-12-14. DSLD Label ID: 304717. This information is provided for educational reference only and is not medical advice. Always follow the product label and consult a doctor or pharmacist before use.