Curious as to the amount of Caffeine and L-Theanine in each capsule, could you provide a rough estimate of each please?

100 mg Caffeine and 200 mg L-Theanine per capsule.

Hi Amazon Customer, Thank you for your question. Smart Caffeine is dairy free. We hope this helps! If you have any other questions or concerns, please let us know by reaching out to us directly -- contact@thegroupdeal.com. -Zoey, Customer Service Customer satisfaction is our top priority. We are always happy to help!

I am considering these, but at a lower dose. Are these pills solid that can be broken in half or are they capsules filled with powder?

Check out my response to Luis's comment, but obviously it's you're body so you can do whatever you want. There are other brands on Amazon that sell this same stack but at different doses. Here ya go: http://smile.amazon.com/Puritans-Pride-Caffeine-L-Theanine-Capsules/dp/B00NAWBUHC/ref=pd_sbs_hpc_4?ie=UTF8&refRID=0YMTY1N1XRT72QW09TVVThose have exactly half of what Smart Caffeine has.

How long do the feeling of concentration last from 1 dose?

Let's use today, this morning I took a pill at 9:30. I didn't redose on caffeine (coffee) till 3:55. I would say I felt the slowdown at around 3pm. So it is pretty textbook 5-ish hours that caffeine is rated for. The difference with this pill is besides the non jittery high, the comedown is very easy and didn't feel like a crash, and that's even after a couple of meals.

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Smart Caffeine Pills - 100mg Caffeine + 200mg L-Theanine Supplement - Supports Energy and Focus - No Jitters and No Crash - 60 Capsules

Product ID: 1549744

Details

Age Range (Description)
Adult
Brand
NATURAL STACKS
Diet Type
Gluten Free
Flavor
Unflavored
Item Form
Capsule
Item dimensions L x W x H
3.94 x 3.94 x

⚡100mg pure caffeine for clean energy

🌿200mg L-Theanine for calm focus

🛡️Non-GMO, vegan & gluten-free formula

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Sold byAmazon VanuatuDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

⚡ Elevate your hustle with calm, clean energy—no jitters, just results!

BALANCED ENERGY BOOST - 100mg caffeine + 200mg L-Theanine delivers smooth, jitter-free alertness without the crash.
VERSATILE DAILY SUPPORT - Perfect morning starter, pre-workout enhancer, or anytime energy lift—ditch the coffee jitters.
TRUSTED OPEN SOURCE BRAND - Natural Stacks’ commitment to transparency means you know exactly what you’re putting in your body.
SUSTAINED FOCUS PRODUCTIVITY - Enhance mental clarity and motivation for long workdays or intense study sessions.
CLEAN TRANSPARENT INGREDIENTS - Non-GMO, vegan, gluten-free, and fully traceable with 3rd party lab testing for peace of mind.

NATURAL STACKS Smart Caffeine Pills combine 100mg of pure caffeine with 200mg of L-Theanine from green tea to provide a smooth, focused energy boost without jitters or crashes. This vegan, gluten-free, and non-GMO supplement supports sustained mental clarity and productivity, backed by transparent sourcing and third-party testing. Ideal for professionals seeking a reliable coffee alternative to power through demanding days.

Specifications

ASIN	B00GXPNEUO
ASIN	B00GXPNEUO
Age Range Description	Adult
Allergen Information	Gluten Free
Best Sellers Rank	#52,630 in Health & Household ( See Top 100 in Health & Household ) #230 in Sports Nutrition Endurance & Energy Supplements #14,855 in Vitamins, Minerals & Supplements
Brand Name	NATURAL STACKS
Color	Blue
Container Type	Bottle
Customer Reviews	4.3 4.3 out of 5 stars (619)
Date First Available	November 27, 2013
Diet Type	Gluten Free
Dosage Form	1 Capsule
Flavor	Unflavored
Is Discontinued By Manufacturer	No
Item Dimensions	3.94 x 3.94 x 3.94 inches
Item Form	Capsule
Manufacturer	Natural Stacks
Manufacturer	Natural Stacks
Manufacturer Part Number	PB-Q91J-HSEU
Material Features	Vegan
Number of Items	1
Primary Supplement Type	Caffeine
Product Benefits	Focused Energy
Product Dimensions	3.94 x 3.94 x 3.94 inches; 1.76 ounces
Special Ingredients	Caffeine, L-Theanine
Specific Uses For Product	Energy, Focus
UPC	798295452535
Unit Count	60 Count

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