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The Best Caffeine And Theanine Capsules of 2023 – Reviewed and Top Rated
After hours researching and comparing all models on the market, we find out the Best Caffeine And Theanine Capsules of 2023. Check our ranking below.
2,207 Reviews Scanned
- Balanced Combination: Each serving of Nutricost Caffeine with L-Theanine delivers 100 mg of caffeine and 100 mg of L-theanine, providing a harmonious blend of these two ingredients.
- Versatile Use: Nutricost Caffeine with L-Theanine can be easily incorporated into your daily routine, whether you need a boost of energy, enhanced focus, or a sense of calm and relaxation.
- Abundant Supply: The 240 capsules in each bottle offer a total of 240 servings, ensuring you have an ample supply of this beneficial supplement.
- High-Quality Manufacturing: This product is manufactured in an NSF certified and GMP compliant facility, ensuring the highest standards of quality and purity.
- Rigorous Testing: To guarantee the integrity of the product, each batch undergoes independent testing by third-party, ISO accredited laboratories.
- FAST-ACTING ENERGY AND FOCUS - This powerful nootropic blend helps boost mental focus and alterness while also promoting wakefulness. This supports mental and physical productivity and is great for studying or even working out!
- NO CRASH NO JITTERS. CALM CLEAN ENERGY - Caffeine + L-theanine pills are a safe, convenient & economic alternative to sugary coffee and energy drinks to help you get through your work day.
- STANDARDIZATION - Many companies lack the quality controls & testing capabilities to ensure customers are receiving products which meet their expectations. At Nootropics Depot, our Caffeine + L-Theanine is standardized in both 100mg of Caffeine and 200mg of L-Theanine as well as 200mg of Caffeine and 100mg of L-Theanine. We then verify this using our industry leading laboratory so you can be ensured that you are getting exactly what you see and what you pay for.
- LAB TESTED AND VERIFIED - All Nootropics Depot products are thoroughly lab tested to ensure our customers are receiving only the highest quality ingredients at the optimal strength, potency and purity. We take pride in the amount of research put into every product by sourcing only the highest quality and innovative ingredients.
- FOCUS & LASTING ENERGY: Caffeine L Theanine pills create a nootropic stack formulated for smooth focused energy and clinically researched to provide clean energy and lasting endurance
- NO JITTERS: Caffeine and L Theanine are super ingredients with no jitters or crash, so you can power through workouts, studies, and activities without the negative effects of regular caffeine. An easy replacement for sugary coffee and energy drinks
- POTENT BLEND: Each two-capsule serving provides a potent, clinically validated blend of 100 mg Caffeine and 200 mg L Theanine for optimal results
- EFFECTIVE & EASY TO SWALLOW: Pure natural Caffeine L Theanine formula in easy-to-swallow soft capsules. Effective energy pills for men & women that are completely free of fillers, binders, and artificial ingredients. No gluten, wheat, or dairy. And of course, never tested on animals. Just a pure and tested product
- 100% HAPPINESS & HEALTH COMMITMENT: Try our products without worry, we're confident that you’ll see results. Plus, through our partnership with Vitamin Angels, your purchase helps provide vitamins to underserved women and children at risk for malnutrition
- BETTER TOGETHER: Sports Research L-theanine and Caffeine offer 2-in-1 support by boosting mental focus and alertness while promoting wakefulness. This nootropic stack enhances both cognitive and physical productivity, making it ideal for studying, gaming, or exercising.
- CLEAN ENERGY: Just one (1) liquid softgel provides 200mg of L-theanine with 100mg of organic Caffeine + coconut MCT oil for a convenient & economical alternative to sugary energy drinks and coffee.
- TRADEMARK INGREDIENTS: Formulate with Alphawave - a highly purified and standardized brand of L-theanine and PurCaf Caffeine from organic green coffee beans.
- QUALITY TESTED: We hold all of our supplements to a higher standard. Rest assured that your L-Theanine + Caffeine softgels are crafted using non-GMO ingredients with no fillers, gluten, or seed oils. Manufactured in the USA in a cGMP-compliant facility.
- THE SPORT OF LIFE: Founded in Southern California in 1980, Sports Research is a family-owned business born from a passion for fitness and wellness. Our goal is to embrace the sport of life through research-backed products created for every body—inside and out.
- Feel Sharp, Calm, and Energized — Without the Crash. Smarter Caffeine + L-Theanine gives you clean, focused energy and heightened mental clarity—without the jitters, tingles, or crash of coffee and energy drinks. It's a smarter nootropic stack designed for peak performance and sustained focus.
- Natural Energy, Laser Focus — For Him & Her. Powered by MCT Oil from 100% pure coconuts, these clean energy pills fuel your brain and body with steady focus, alertness, and clarity. L-Theanine balances the buzz so you stay calm, sharp, and in control.
- Softgels That Work Smarter, Faster. Our berry-flavored softgels absorb better than traditional tablets and capsules—making them ideal as a pre-workout boost or anytime brain enhancer. Smarter delivery, better results.
- Made in the USA — Without the Junk. No fillers. No artificial junk. No shady additives. Just clean, effective ingredients with zero magnesium stearate, dioxides, maltodextrin, soy, dairy, corn, nuts, preservatives, or carrageenan.
- Better Supplements, Built With Purpose. We don’t just make supplements—we obsess over every detail. Smarter Vitamins are crafted to be cleaner, more effective, and accessible for anyone ready to feel better, think clearer, and live stronger—without overpaying.
Last update on 2025-07-17 / Affiliate links / Product Titles, Images, Descriptions from Amazon Product Advertising API
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FAQ:
Q: What is theanine good for?
A: Theanine is well known for its soothing, relaxing effects, and has been found helpful as a non-prescription agent in treatment of depression and anxiety.
Q: What are the benefits of using L theanine?
A: L-Theanine Benefits. The most impressive l-theanine benefits include its ability to boost cognitive function, lower anxiety, promote healthy sleep, and minimize the symptoms of schizophrenia, among others.
Q: What are the symptoms of too much coffee?
A: Signs and symptoms you’ve had too much caffeine and are now dehydrated as a result include feeling light-headed, nauseous, weak or confused and experiencing dry mouth, lack of sweat and heart palpitations.
Q: Does L theanine contain caffeine?
A: L-Theanine is a major component of green tea and it has become very popular as a dietary supplement. When it is combined with caffeine, L-Theanine reaches its full potential and enhances the positive properties of caffeine. L-Theanine is an amino which is found naturally in mushrooms and tea leaves.