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 with L-theanine for Focused Energy No Jitters or Crash - 60 Capsules

Smart Caffeine with L-theanine for Focused Energy No Jitters or Crash - 60 Capsules

Product ID: 792032900

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Details

Brand
NATURAL STACKS
Flavour
Unflavored
Primary supplement type
Caffeine
Unit count
60 Count
Item form
Capsule
Item dimensions L x W x H
10 x 10 x 10

⚡100mg caffeine per capsule

🌿Gluten-free, clean formula

🧠100mg L-theanine for calm focus

Description

⚡ Stay sharp, stay calm — power through your day with smart energy!

TRUSTED QUALITY - From NATURAL STACKS, a brand known for premium, science-backed supplements.
CALM FOCUSED MIND - L-theanine synergizes with caffeine to enhance concentration and mental clarity.
CLEAN PURE FORMULA - Gluten-free capsules crafted for health-conscious professionals.
CONVENIENT ON THE GO - 60 easy-to-swallow capsules for anytime focused energy, wherever work takes you.
BALANCED ENERGY BOOST - Smart caffeine blend delivers sustained alertness without jitters or crash.

NATURAL STACKS Smart Caffeine combines 100mg caffeine with 100mg L-theanine per capsule to provide focused, jitter-free energy. This gluten-free supplement comes in a 60-capsule bottle, designed for adults seeking clean, sustained mental clarity and alertness without the typical caffeine crash.

Specifications

Additives	Caffeine, L-Theanine
Allergen Information	Gluten Free
Units	60 Count
Serving Recommendation	Take 1 capsule whenever focused energy is desired.
Brand	NATURAL STACKS
Format	Capsule
Age Range Description	Adult

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