“Excellent / Perfect combination of supplements. I only wish it wasn't out of stock all the time.”
100 mg of Caffeine and 100 mg of L-theanine capsules.
Brain Booster pairs caffeine with L-Theanine in a simple two-capsule serving, made for focused mornings, long work sessions, and busy days. Thoughtfully pairing caffeine with L-Theanine, Brain Booster is designed for the moments that call for alertness, engagement, and forward momentum. The streamlined formula fits easily into busy mornings, focused work, active afternoons, and the everyday routines that keep you moving. Each bottle contains 90 capsules.
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Ships same day when ordered by 2:30 PM PST (Mon–Fri).
Start a demanding morning with a simple two-capsule routine.
Pair your focus routine with movement, hydration, and a consistent sleep schedule.
Keep the formula close for study sessions, creative work, or travel days.
Use the convenient capsule format at home, in the office, or on the go.
The two featured ingredients are supported by a short list of functional capsule ingredients. The label lists rice flour, gelatin capsule, microcrystalline cellulose, magnesium stearate from a vegetable source, and silica.
Natural stimulant support
Caffeine is the familiar source of lift in the formula, helping support alertness and energy when you want to get moving or stay engaged.
Tea-derived amino acid
L-Theanine is an amino acid naturally found in tea. It is paired with caffeine to create a more balanced-feeling focus routine.
Capsule support ingredient
Rice flour helps provide a stable, clean powder base for the capsule blend.
Capsule shell
The gelatin capsule provides a convenient, easy-to-use format for the serving.
Formulation aid
Microcrystalline cellulose supports texture and consistency in the finished capsule.
Vegetable-source processing aid
Magnesium stearate, from a vegetable source, helps the ingredients move consistently through capsule manufacturing.
Flow support
Silica helps maintain a consistent powder flow during production.
Brain Booster keeps the formula straightforward: caffeine for familiar alertness and L-Theanine for a balanced focus ritual. There is no complicated stack to measure and no powder to mix. Just two capsules, 90 capsules per bottle, and a dependable way to support the focused momentum behind your morning, your work, your workout, or your next adventure.
Take 2 capsules with water for one serving.
Take in the morning or before a focused activity. Avoid taking it close to bedtime because it contains caffeine.
Consider caffeine from coffee, tea, energy drinks, and other supplements when planning your day.
Pair your routine with adequate sleep, hydration, and nourishing meals.
A simple way to begin a demanding work or study block.
A convenient capsule format for movement, errands, and time outdoors.
Two capsules, water, and a clear plan for the day ahead.
The two featured ingredients are caffeine and L-Theanine. The capsule also contains rice flour, gelatin capsule, microcrystalline cellulose, magnesium stearate from a vegetable source, and silica.
Take 2 capsules with water for one serving. It is best taken in the morning or before a focused activity, not close to bedtime.
Each bottle contains 90 capsules, which is 45 servings at 2 capsules per serving.
Yes. Because it contains caffeine, avoid taking it close to bedtime and count the caffeine you already get from coffee, tea, energy drinks, and other supplements.
Do not exceed the suggested serving. It is not recommended for children, for pregnant or nursing individuals, or for people sensitive to caffeine without guidance from a qualified healthcare professional. Stop use and seek medical advice if you experience unwanted symptoms.
Contains caffeine. Do not exceed the suggested serving. Not recommended for children, pregnant or nursing individuals, or people sensitive to caffeine without guidance from a qualified healthcare professional. Discontinue use and seek medical advice if you experience unwanted symptoms.
Excellent / Perfect combination of supplements. I only wish it wasn't out of stock all the time.
Medura Response · October 4, 2026
Thanks so much for your feedback! We’re thrilled you love the combination and how well it’s working for you. We’re working hard to keep it in stock more consistently. Your support means a lot!
I was THRILLED to see the Cloud9 Brain Boosters back at BuyLegalMeds! I have been using this product for years. It significantly helps with focus and productivity with no crash like some prescription medications. I bought several bottles right away so I could get the free shipping!
I'm so glad these are back. I'm going through menopause and have chronic pain, both of which cause brain fog for me. Brain Boosters are the only supplements I've taken that relieve the brain fog and help with my pain.
Great for focusing and having positive energy
Medura Response · August 12, 2026
Hey there! Thank you for leaving a review for our Brain Booster. We're thrilled to hear that it's been helping you with focus and providing positive energy. We're constantly working to create products that enhance our customers' lives, and we're glad to know that this one has been working for you. Thanks for your support and happy focusing!
These combat fatigue, help me stay focused throughout the day and have the bonus of helping with my chronic back pain.
This stuff is amazing
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