We spent many hours on research to finding 300mg caffeine, reading product features, product specifications for this guide. For those of you who wish to the best 300mg caffeine, you should not miss this article. 300mg caffeine coming in a variety of types but also different price range. The following is the top 9 300mg caffeine by our suggestions:
Reviews
1. L-Theanine | 300 mg | 90 Capsules | Nootropics City
Feature
L-Theanine | Pure | Nootropics | 300 mg | 90 CapsulesAmino Acid from Green Tea
Cancels out negative side effects of caffeine
Boosts dopamine and serotonin levels
Amplifies Alpha Brainwaves - Meditation Nootropic
Description
L-Theanine is an amino acid found in tea, responsible for its calming, focusing effects. CHILL OUT: Ever hear the old saying "haste makes waste"? When you have the world on your shoulders and deadlines looming, it's easy to get stressed out. That's when things tend to go from bad to worse. In these situations, there isn't time to sit down with a pot of tea, collect your thoughts, and center yourself. Thankfully, we've distilled (GET IT?!) the amino acid that's the real key to tea. Unlock clarity with L-Theanine! FIND YOUR CENTER: The Chinese and the British empires were the two most powerful military, cultural, and scientific forces of their day. What did they have in common? Tea! You might think that two societies who took hours out of the day to devote to ceremoniously preparing and consuming tea would be behind the curve, but they both knew that it was a time investment well spent. Now you don't need to go to all the trouble of preparing a hot cup just to attain the focus and clarity it gave them. Power the engine of YOUR empire with L-Theanine today! L-Theanine is an amino acid naturally found in green tea. L-Theanine promotes relaxation without the drowsiness or negative side effects associated with other calming agents. It has a synergistic effect with caffeine, reducing side effects and magnifying the impact on focus. *NOTE: 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.2. BLXR Brain Fuel Natural Nootropic Brain Supplement Ginkgo Biloba, Royal Jelly and Bacopa Monnieri CAFFEINE FREE Supports Mental Clarity, Focus & Memory
Feature
GET THAT EXTRA EDGE, NATURALLY: Bee Prepared with our memory, focus and clarity liquid formula. Whether you have an important test, project, presentation, social gathering or athletic performance BLXR Brain Fuel is the powerful natural nootropic for you.PREMIUM NATURAL INGREDIENTS YOU CAN TRUST! CLINICALLY PROVEN ingredients including gingko biloba, bacopa monnieri and royal jelly to enhance mental performance - Boost your focus, memory and concentration with our unique formula containing 400mg of gingko biloba, 300mg of bacopa monnieri and 500mg of royal jelly.
UNIQUE CAFFEINE-FREE BRAIN SUPPLEMENT - Stay alert and focused using safe and natural ingredients with this brain supplement without the crash and jitters from caffeine. Cognitive nutrition at its best!
7X MORE EFFECTIVE THAN PILLS: Studies prove that liquids are quicker-acting & 7X more bioavailable than pills. You won't find another product with the amounts in BLXR: 400mg of gingko biloba extract (10:1, QCE 4000mg), 300mg of bacopa monnieri (10:1, QCE 3000mg) and 500mg of royal jelly.
CUSTOMER SATISFACTION GUARANTEED: We love our customers and will do everything and anything to guarantee your satisfaction with all of our products. If for any reason you're unhappy with our product, we offer a full refund.
Description
B.LXR Brain Fuel is a powerful nootropic formula containing natural compounds to help enhance memory, performance, and cognition. Whether you have an exam, presentation, sporting event, work project, or just want to feel more awake without caffeine, B.LXR is a mighty combination of supplements in the form of a shot to biohack and nourish one of your most vital organs, your brain. Our innovative natural formulation is ideal for high performers looking to optimize their minds, while supporting their bodies with plant based adaptogens and superfoods!3. BSN Endorush Energy & Performance Pre-workout Powder With Creatine, 30 Servings, Fruit Punch
Feature
300mg of Caffeine (natural and anhydrous), 1.6g of Beta-Alanine, 3g of Creatine in every scoopPre-workout for Men or Women with 100% label transparency featuring ingredients with a purpose
Exclusive to BSN 4.5g Pump Blend featuring 3g VELOX (50:50 ) patented pump technology, 1g NO3-T Creatine Nitrate, 500mg Magnesium & Calcium Glycerophosphate
Description
Getting to the top requires unrelenting discipline from within. The ancient Greeks called this "Endo" - meaning internal. We at BSN call it ENDORUSH, a pre-workout designed to help fuel the internal drive of performance athletes ready to rise to the challenge in front of them. Armed with only the necessary compounds. Equipped with 100% transparent label. ENDORUSH takes your training to the next level from start to finish with a no-nonsense formula of gym-tested ingredients. Fuel the RUSH within and train without limits.4. WHC Caffeine + L-Theanine 300 mg (120 Capsules) | No Crash or Jitters | Alert and Productive | Calm and Relaxed | Nootropic Supplement
Feature
100mg Caffeine Anhydrous for instant energy200mg L-Theanine for a relaxing calm feeling
No Crash
No Jitters
100% Satisfaction Guarantee
Description
Caffeine + L-Theanine is a perfect combination found naturally in nature within Green Tea plants. These capsules will provide long lasting energy without crashing or jitters, as well as improving your mood so you can enjoy your day.5. Super Stingers Mega Energy Ephedra Free 96 Pills
Feature
ENERGY BOOSTERVITIAMINS
EPHEDRA FREE
Description
THIS IS FOR SUPER STINGERS MEGA ENERGY PILLS.4 PILLS IN 24 PACKS FOR A TOTAL OF 96 PILLS.EPHEDRA FREE. EACH PILL HAS 50MG OF VITAMIN B6,250MCG OF VITAMIN B12,8MG IRON,300MG CAFFEINE,AND 73MG PROPRIETARY BLEND(GUARANA EXTRACT,GREEN TEA EXTRACT,ASIAN GINSENG).EXPIRE DATE IS 6-2010.PLEASE CHECKOUT OUR STORE FOR OTHER HEALTH ITEMS PLUS MORE.THANK YOU FOR LOOKING AND HAPPY BUYING.6. Pure L-Theanine 200mg Supplement - 180 Capsules - L Theanine to Support Relaxation, Focus, Stress Relief & Sleep - Powerful When Paired With Coffee / Caffeine - Extra Strength Pills
Feature
MAX STRENGTH L-THEANINE: aSquared Nutrition's maximum strength L-Theanine supplement contains 200mg of L-Theanine per capsule, and 180 capsules in each bottle. Theanine is an Amino Acid that is found in plant species, most notably green and black tea leaves. Don't settle for other L-Theanine tablets or capsules that only offer 100mg or 150mg of L-Theanine per pill, or that only provide 60, 90 or 120 pills per bottle. *FEEL THE DIFFERENCE: L-Theanine supports relaxation & stress relief, promotes healthy brain & cognitive function, and supports cardiovascular health. L-Theanine is a powerful antioxidant that supports improved sleep quality. Many people take L-Theanine with Caffeine, as L-Theanine may help reduce the side effects of Caffeine use. Some people take L Theanine to help lessen symptoms of anxiety and depression, but evidence of such benefits is incomplete. *
SUPPORTS BRAIN HEALTH: L-Theanine is a powerful Amino Acid that is derived from green & black tea. Many people take L-Theanine supplements to help reduce the negative effects of caffeine. L-Theanine is also taken to help with focus & cognition, promote stress relief and relaxation, may help decrease anxiety, and promote improved sleep quality. Try also our SAM-e 400mg, 5-HTP 100 mg, Magnesium Glycinate, and Acetyl L-Carnitine 1000mg. *
BEST VALUE ON AMAZON: Our L-Theanine 200mg formula is backed by our 100% Money Back Guarantee for 30 Days. Each bottle contains 180 capsules, with each capsule containing 200 MG of pure L Theanine. Our complex is made in the USA, in an FDA registered and GMP compliant facility. It contains No Preservatives, No Soy, No Gluten, No Dairy, and No unnecessary fillers or binders. Also try our Methyl B12, CoQ10 200mg or 400 mg, all natural Turmeric Curcumin, SAM-e 400mg, & 5-HTP 100mg. *
A BIT MORE INFO: L-Theanine (Gamma-glutamylethylamide) is a non-dietary Amino Acid similar to L-Ornithine. L-Theanine is structurally similar to Glutamine, as well as the neurotransmitter GABA. L Theanine can be taken in powder, capsule, pill, soft gel, tablet, chewable, gummy, liquid, drop or droplet form. *
Description
Maximum Strength L-Theanine Formula Containing 200mg of Pure L-Theanine Per Capsule with 180 Capsules in Each Bottle. *
L-Theanine is an Amino Acid that is found in plant species most notably Green Tea leaves. Many people take L-Theanine with Caffeine, as L-Theanine may help reduce the side effects of Caffeine use. L-Theanine is a powerful antioxidant that supports relaxation & stress relief, promotes healthy brain & cognitive function, promotes improved sleep quality, and supports cardiovascular health. *
HEALTH BENEFITS OF L-THEANINE:
Supports Relaxation & Stress Relief *
Promotes Healthy Brain & Cognitive Function *
Supports Cardiovascular Health *
May Help Reduce Caffeine Side Effects *
Promotes Improved Sleep Quality *
Potent Antioxidant Properties *
Supports Healthy Immune Function *
May Assist With Healthy Weight Loss *
HOW OUR PRODUCT COMPARES:
Huge Supply: 180 Capsules per Bottle *
Max Strength: 200mg of L-Theanine per Capsule *
Made Right Here in the USA *
Made in an FDA Registered & GMP Compliant Facility *
No Preservatives, No Gluten, No Dairy, No Soy *
100% Money Back Guarantee for 30 Days
Third Party Tested for Quality & Purity *
CAUTION: Do not exceed the recommended dose. Not intended for pregnant or nursing mothers. Not intended for children under 18 years of age. If you are taking any medications, have a known medical condition, or are planning a medical procedure, consult your doctor before use. Discontinue use and consult your doctor if any adverse reactions occur.
* The results described are not typical and will vary based on a variety of factors. Results may vary.
* These statements have not been evaluated by the Food and Drug Administration.
7. Cellucor C4 Ultimate Pre Workout Powder with Beta Alanine, Creatine Nitrate, Nitric Oxide, Citrulline Malate, and Energy Drink Mix, Icy Blue Razz, 40 Servings
Feature
C4 Ultimate is the most powerful C4 we've ever created - for those with no limits in the gym. This pre-workout will push you for one more set. Every time.The Ultimate Formula 6g Citrulline Malate, 3.2g Beta Alanine, 1.5g Creatine Nitrate, 1g Arginine, 858mg nootropic energy blend, 300mg caffeine per scoop. 20 servings per container.
Premium Ingredients: Cellucor promises quality of ingredients and purposefully crafted blend of patented ingredients that promote energy and endurance to satisfy your fitness goals.
Unbeatable Flavors: There's a flavor for you. C4 Ultimate is offered in Raspberry Lemonade, Apple Berry, Icy Blue Razz, Orange Mango, Cherry Limeade, and Strawberry Watermelon.
100% Satisfaction Guarantee: All Cellucor sales by Amazon and Nutrabolt are backed by a 30-day, full money-back guarantee.
Description
C4 Ultimate is the most powerful C4 weve ever created. Its not for the weak. Its not for the weekend warrior. This is for those that dont have limits in the gym. Those that arent afraid to work, sweat, and bleed for their next best. Its dosed to the brim with the powerful ingredients that your body begs for. You will feel the explosive energy run through your veins as you prep for battle in the gym.*This maxed-out formula also packs a heavy punch of nootropics, mood enhancers, pump amplifiers and endurance boosters to push you to your ultimate limit. C4 Ultimate will challenge you for one more rep, one more set, and to pick up that heavy dumbbell youve been thinking about for weeks.*8. 12 Shots of Extra Strength Nootropic Energy Boosts - 800mg Tyrosine, 500mg Carnitine, 300mg AlphaSize Alpha GPC, 250mg L-Theanine, 250mg Organic Caffeine, B12 - Made in USA
Feature
The ultimate fast acting liquid brain enhancement supplement made with ultra strength, ultra pure pharmaceutical grade Alpha GPC, L-Theanine, Acetyl L-Carnitine, N-Acetyl L-Tyrosine, Organic Caffeine & B Vitamins.Increase neurotransmitter dopamine and noradrenaline for peak performance; Formulated with focus boosting vitamins, aminos, and minerals for mood, motivation and focus.
Ignite mental alertness with long lasting effects! The nootropic booster stack used in each NEU are of the highest grade.
Stronger than gums, capsules, and pills with better absorption and more nootropics per serving. No messy powders. Don't settle for less. We list every ingredient and their weights on every bottle so you know exactly what you are getting.
Made in a state of the art cGMP certified facility in California. NEU is filled in BPA-FREE Bottles.
Description
HAVE THE ADVANTAGENEU Nootropic Boosts contain safe and effective cognitive enhancing nutrients called nootropics. These powerful compounds support MOTIVATION, FOCUS, & MOOD. Simply shake and shoot when you want to HAVE THE ADVANTAGE. NEU nootropic boosts deliver more active nootropics, vitamins, and nutrients to your brain that you can feel in minutes!
Experience a Powerful Cognitive Boost Like No Other
- Powerful Nootropics + 125mg Organic Caffeine from Green Coffee
- Sustain Cognitive Performance
- Improves Mental Clarity
- Enhances Memory Recall
- Brain-Barrier Delivery System
- Increases Alphawaves
... Amazing benefits in each Ready to Drink 2-Ounce shot!
All Natural - Only 4 Grams Sugar - 18 Calories - Vegan - Non-GMO - Gluten Free - Made in California
NEU contains a powerful nootropic stack made with effective doses of acetylcholine precursors like premium quality Alpha-GPC, DMAE (found in salmon), Phosphatidylserine, and CDP-CHOLINE to increase mental clarity, memory recall, and eliminate brain fog.
All in an ready-to-drink 2 oz beverage, take NEU daily for improved cognitive function.
9. MAKO NUTRITION Energy Preworkout Formula 210 gm, Fruit Punch, 30 Count
Feature
Designed for men and women at all training levels that want sustained explosive energy - 300mg caffeine for energyEnergy, Mood Enhancement, & Focus Yohimbine HCL for Energy & Weight loss
L-Citrulline for Nitric Oxide Boosts Agmatine Sulfate for Muscle Strength & Stamina
Delicious flavors developed to making drinking nutrition shakes as enjoyable as the benefits
Frequently purchased with Mako protein blends, Mako amino energy, and Mako creatine