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Positivity On Command
Serotonin Brain Food™ is a natural supplement designed to safely improve healthy balance and function of this most essential "feel-good" brain neurotransmitter.
  • Improved mood and social ability
  •  Promotes calmness and sense of well-being
  •  Relieves stress and frustration
Starting at $32 Per Bottle + Free Shipping
✓ Vegan  ✓Organic  ✓GMO-Free  ✓No Research Chemicals
What's In Serotonin Brain Food™?
Conquer Life With Ease
CILTEP® is a safe & natural formula designed to safely enhance the brain's ability to form vivid, long-lasting memories and remain sharp, motivated and focused for hours.
Starting at $32 Per Bottle + Free Shipping
  • Increased motivation and mental drive
  • Improved concentration and alertness
  • Improved mood and social ease
✓ Vegan  ✓Organic  ✓GMO-Free  
✓No Research Chemicals
Dave Asprey

Founder of
"I am seriously impressed with CILTEP"

"CILTEP has earned a place alongside world-class smart drugs. It works synergistically with them to help you do - and be - more."
Mattias Ribbing

Grandmaster of Memory
"My wife set up a blind study for me because I got my hand on some CILTEP… We did a blind test… Out of these 20 trials that I did in these 10 days, my four fastest ones were all on CILTEP."
Martin Jacobson

World Series of Poker Champion
"I've relied on CILTEP as my go-to product to optimize mental performance for the seven week long World Series of Poker. I've noticed a remarkable difference in my ability to spend hours at a table without a break in concentration. This product really works."
In 2011, a small group of independent researchers set out to solve a problem: How could they engineer the world’s first natural supplement to protect brain health and maximize memory and concentration, without any side effects?

They spent 2 years testing and perfecting a unique formula. What they discovered has been hailed as a breakthrough in natural health: they called it CILTEP®. And now you can experience it for yourself.
What to expect from Serotonin Brain Food™
Zen-Like Stress Resilience
Serotonin Brain Food™ helps you keep a cool head in any situation. When something or someone disrupts your flow, or threatens to shake your emotional foundation, Serotonin Brain Food™ will make these disturbances seem less catastrophic.
Uplifting Mood
Whether your day is off to a shaky start, or you're having trouble finishing on a high note, Serotonin Brain Food™ helps lift you up with vitalizing warmth and sustained positivity.
Blissful State of Calm
Serotonin acts to keep brain excitation in check. When life gets overwhelming and your mind races in all directions with frantic or anxious thoughts, Serotonin Brain Food™ is there to pump the breaks so you can keep calm and carry on.
Effortless Social Interaction
We all feel socially inhibited or self-conscious in some situations. Social interaction should be fluid, natural, and easy for all of us. For whatever the situation calls, Serotonin Brain Food™ let's you be you -- without compromise.
Healthy Gut Balance
The benefits of serotonin aren't just limited to the brain. 90% of your body's serotonin is made in the gut and having enough of it promotes smoother digestion and keeps appetite in check which helps cut down on the temptation of food cravings and over-eating.
Greater Emotional Balance
Having too little serotonin is just as problematic as having too much. Serotonin Brain Food™ contains the raw natural ingredients to make sure your levels of serotonin are balanced and healthy, so your emotional state of mind will be too.
CILTEP® was designed to unlock the brain's natural ability to maintain mental clarity and retain information long-term WITHOUT any side effects or complications. 

Since 2013, Natural Stacks has not been made aware of any widely-reported side effects, and individual reports are extremely rare. CILTEP® is generally considered to be a side effect-free supplement.
Money Back Guarantee
If for whatever reason you're unsatisfied with your Natural Stacks products, you can return the product within 30 days for a full refund, no questions asked. 
CILTEP® Success Stories
Competitive Memory champion tests CILTEP® for 10 days.
"With 1 dose of CILTEP®, you get a baseline shift equal to a month of hardcore work on your brain."
Brazilian Jiu-Jitsu fighter takes CILTEP® before every competition. 
Nutritional coach trusts CILTEP® to 
"keep sharp and focused."
Olympic Javelin thrower trains with CILTEP®. "Some things just work."
Personal trainer takes CILTEP® in the morning to get "in the zone."
Suggested Use
Take 2-3 capsules to support a positive mood, during situations of stress or irritability, or as directed by a health care practitioner. 

Do not take more than 3 capsules per day. 
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CILTEP® User Reviews
Customer Reviews
"Great product"
"CILTEP gives me a noticeable edge; extra clarity, focus, and motivation. It helps me be as productive as possible at work, and still have the drive and focus at night when I'm working on my MBA studies."

-Tracy D, United States
"CILTEP is pretty amazing!"
"With most supplements you hope they are working but you can't really tell. Not With CILTEP. Increased focus and drive right off the bat."

-Brett S, United States
"1st Month of Ciltep Has Been Great"
"I have been using Ciltep for over 30 days and have really noticed a difference. I have been waking up before my alarm goes off, working more efficiently at my job, and generally feeling physically better. Would definitely recommend this product to friends and family."

-Tom A, United States
"Huge Fan!!"
"I have been very happy with the CILTEP/Smart Caffeine stack. Incredible focus and clarity along with increased energy without the jitters! Excellent. Customer for life!

-Wade W, United States
Rhodiola Rosea
400 mg
Used in traditional Chinese Medicine for centuries, this well-studied adaptogen is used to provide an uplift in mood and to support serotonin metabolism via the Kynurenine Pathway. 
1,250 mg
L-Tryptophan is a precursor to 5-HTP which is used to produce serotonin. When taken alone, tryptophan has little influence on brain serotonin, but thanks to cofactors, efficient conversion is made possible.
Vitamin B3
150 mg
Niacin (Vitamin B3) can increase cellular energy and cerebral blood flow. In the brain, B3 serves as a cofactor for ATP energy production and neurotransmitter metabolism.

50 mg
Magnesium is the 4th most abundant mineral in the human body. It is involved in over 300 different processes including energy metabolism, neurological function, cellular and DNA replication, and normal, healthy brain function.
20 mg
Zinc provides a wide variety of general health benefits and it may positively influence cognition, mood, and well-being. Interestingly, both a deficiency and a surplus of zinc in the brain have been correlated with memory impairment
The Science Behind Serotonin Brain Food™
Serotonin Brain Food™ contains the vitamins, minerals, and amino acids that collectively increase the production, function, and balance of this most essential "feel-good" neurotransmitter -- serotonin.

You are not directly ingesting or manipulating that neurotransmitter. 

By providing your body the nutrients it needs to metabolize these neurotransmitters, it is able to achieve optimal levels naturally. 

This method of naturally finding optimal levels also removes the chance of habituation or down-regulation, so can safely take Serotonin Brain Food™ to achieve and maintain optimal levels of Serotonin for long-term use.
People are RAVING about CILTEP!
How does this offer work?
This is a special limited time sale. Our quantities are extremely limited and when we are sold out, the offer will shut down. We do not store credit card information or rebill you at any time in the future. 
What is Serotonin Brain Food™
With Serotonin Brain Food, you are NOT ingesting the neurotransmitter directly. Serotonin Brain Food™ is the first all-natural supplement designed with precursors and cofactors known to optimize levels of the neurotransmitter serotonin. 
Is the product safe?
Like all of our Brain Foods, Serotonin Brain Food contains the vitamins, minerals, and amino acids that are involved in the metabolism of that respective neurotransmitter. You are not directly ingesting or manipulating that neurotransmitter. By providing your body the nutrients it needs to metabolize these neurotransmitters, it is able to achieve optimal levels naturally. This method of naturally finding optimal levels also removes the chance of habituation or down-regulation, so can safely take our Brain Foods to achieve and maintain optimal levels of Serotonin for long-term use.
What will I feel?
Serotonin Brain Food™ will create feelings of calm, contentedness, peace of mind, and a positive and balanced emotional state of mind.
Are there any side effects?
There are no known side effects if used as directed. For that reason, thousands of people around the world have chosen CILTEP as their preferred nootropic stack. 
How do I use Serotonin Brain Food™?
We recommend taking 2-3 capsules of Serotonin Brain Food™ in the morning to cultivate all-day calmness, or in the afternoon to unwind from the normal stress from daily life.
Is the product guaranteed?
Yes, all of our stacks are sold with a full 100% money back guarantee. If for any reason you are not satisfied, you can return the stacks within 30 days for a full refund. 
Copyright Natural Stacks 2017.