Ciltep Product Image



Ciltep Product ImageDoes this self-proclaimed “mental performance booster” really have what it takes to improve your long term memory and protect your brain against deterioration? In this CILTEP review, we’re taking a look at what we believe this popular nootropic really has to offer consumers.

Readers please note that statements on this page are fair comment based on observation. This content is produced on a matter of public interest. Statements on this page are our honest opinion.



CILTEP is a nootropic stack and mental performance pill created by a US-based company named Natural Stacks. Currently Natural Stacks holds a Better Business Bureau rating of “F” and has 2 customer complaints filed against it, both of which have not been responded to.

This product is available via the official CILTEP website and Amazon. We are unsure if it is available in stores.

One bottle of CILTEP contains a one month supply of capsules and costs $44.95, though there are discounted bundle packs.

This product is targeted towards those who are looking to improve their overall cognitive abilities, such as students, scholars and workplace professionals. Users of CILTEP are told to expect results such as increased memory, and mental endurance, improved concentration and alertness, improved mood and the enhanced ability to study.

Does CILTEP Work?

Based on our research into CILTEP, we believe that it is highly unlikely to function as described, as the effects promised by Natural Stacks are highly unlikely.

Consumers are told that the majority of the brain-boosting benefits of this product stem from formula’s ability to “inhibits PDE4 enzymes”.

We are told that these PDE4 enzymes are responsible for breaking down the pathways in your brain, which can lead to slower thought processing and worsened memory; by inhibiting these enzymes, CILTEP is able to improve your brainpower significantly – of course this is all complete lies.

None of the statements in the CILTEP product description have been approved by the FDA or the EFSA, meaning there is little-to-no concrete scientific evidence proving the ingredients inside the formula useful for producing nootropic effects. In our own attempts to verify the validity of Natural Stack’s claims, we found very little concrete evidence.

The Pros & Con Of CILTEP

Let’s take a look at the top level pros and cons of this product:

The Pros

  • May help improve focus and concentration levels.
  • Contains B vitamins which are useful for brain health.
  • Comes with a money-back guarantee.

The Cons

  • Does not contain any FDA-approved “nootropic” ingredients.
  • Is highly unlike to improve your memory or thought processing speeds.
  • The statements this product help “stop the breakdown of your brain’s natural messenger systems” is totally lacking clinical proof.
  • Numerous false claims are made on the product’s abilities over all.
  • Potentially manipulated Amazon reviews according to FakeSpot.

What Are The CILTEP Ingredients?

We have found the following supplement facts via the Natural Stacks website:

Three Capsule Serving Contains: Vitamin B6 5mg, Artichoke Extract 900mg, L-Carnitine 750mg, L-Phenylalanine 500mg and Coleus Forskohlii Extract 20mg.

Non-active Ingredients: Vegetable Capsule, Ascorbyl Palmitate and Silica.

Is CILTEP Suitable For Everyone?

This product is suitable for vegetarians and vegans. It should not be used by women who are pregnant or breastfeeding, or anyone under the age of 18.


This product does not contain and banned or dangerous ingredients; we believe it poses no health risk to consumers as long as it is used correctly (i.e. the directions of usage of adhered to, and daily serving amounts are not exceeded).

What Are The CILTEP Side Effects?

We’ve compiled the following potential side effects based on the ingredients inside this formula:

  • Anxiety
  • Jitteriness
  • Hyperactivity [1]

Note: these side effects are possible but may not be the typical user experience.


Are There Any CILTEP Reviews From Customers?

We have found the following CILTEP review testimonials via customers online:

The effect is subtle…to the point where I think most people will need to try it and form their conclusions about whether there’s a placebo effect, or whether it’s really working.

Product works, works even better when stacked with Natural Stacks Dopamine. The first few months on the stack, I was on fire, multitasking, getting stuff done! Mentally, I felt 30 years younger. The effect does seem to lessen after six months or so

When reading through reviews on the Amazon product listing page, we thought that many of them seemed suspiciously positive (lots of unverified reviews customers reporting highly unlikely effects). We ran the product listing page through the FakeSpot software, which came back with the following results:

Analysis overview

  • Our engine has detected that Amazon has deleted and scrubbed reviews from this listing. We approximate total reviews deleted to be 29.
  • Our engine has profiled the reviewer patterns and has determined that there may be deception involved.
  • Our engine has determined that the review content quality is low.

Source: FakeSpot

Our Final Verdict On CILTEP

To conclude our CILTEP review, it’s a bit of a mixed bag – there are things that we like about it and things that we aren’t too blown away by. It seems to us that Natural Stacks have a compulsion to lie about CILTEP’s abilities and background in general.

From the false claims that CILTEP is protected by patent and claiming it’s undergone clinical study, to the outright false claims that it can help prevent your “brain pathways from deteriorating”, the whole thing is just very far fetched and lacking conclusive evidence.

In our opinion, this product doesn’t contain any ingredients capable of producing profound nootropic effects, the most you should really expect from this product is slightly improved focus and concentration levels – whether or not those effects are worth $44.95 is up to you.