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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NATURAL STACKS 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

🚫No jitters or crash formula

€ 45.36

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Sold byAmazon CroatiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

⚡ Elevate your focus, skip the crash — smart energy for sharp minds!

TRUSTED QUALITY - From a top-rated brand with 4.3 stars and hundreds of reviews, crafted for professionals who demand peak performance.
JITTERS FREE FOCUS - Experience calm, jitter-free productivity—ditch the anxiety and wired feeling from typical energy pills.
CLEAN TRANSPARENT - Non-GMO, gluten-free, vegan ingredients with full traceability and 3rd party lab testing for peace of mind.
VERSATILE DAILY USE - Perfect for mornings, study sessions, or pre-workout—your smarter coffee replacement anytime you need a lift.
BALANCED ENERGY BOOST - 100mg caffeine + 200mg L-Theanine delivers smooth, sustained alertness without the usual caffeine crash.

NATURAL STACKS Smart Caffeine Pills combine 100mg of pure caffeine with 200mg of L-Theanine to provide a balanced, jitter-free energy boost. Designed for adults seeking enhanced focus and productivity, this vegan, gluten-free supplement supports sustained alertness without the typical caffeine crash. Backed by transparent sourcing and third-party testing, it’s a trusted choice for professionals wanting clean, reliable energy in a convenient capsule form.

Specifications

ASIN	B00GXPNEUO
Age Range Description	Adult
Allergen Information	Gluten Free
Best Sellers Rank	#60,419 in Health & Household ( See Top 100 in Health & Household ) #262 in Sports Nutrition Endurance & Energy Supplements #17,105 in Vitamins, Minerals & Supplements
Brand	NATURAL STACKS
Brand Name	NATURAL STACKS
Color	Blue
Container Type	Bottle
Customer Reviews	4.3 out of 5 stars 619 Reviews
Diet Type	Gluten Free
Dosage Form	1 Capsule
Flavor	Unflavored
Item Dimensions	3.94 x 3.94 x 3.94 inches
Item Form	Capsule
Item dimensions L x W x H	3.94 x 3.94 x 3.94 inches
Manufacturer	Natural Stacks
Manufacturer Part Number	PB-Q91J-HSEU
Material Features	Vegan
Number of Items	1
Primary Supplement Type	Caffeine
Product Benefits	Focused Energy
Special Ingredients	Caffeine, L-Theanine
Specific Uses For Product	Energy, Focus
UPC	798295452535
Unit Count	60 Count

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€ 45.36

Duties & taxes included

In stock

Sold byAmazon CroatiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Croatia.

Secure transaction

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