Updated: 05/24/2016 - Website operated by Leptigen

Stimerex ES Review - Does This Weight-Loss Formula Work? Are lackluster ingredients and side effects deal breakers?

Editor's Review: 3.5 / 5.0
Stimerex ES Review

The results of our research into Stimerex ES were somewhat surprising. We did one of our in-depth reviews, scrutinizing the ingredients, side effects, level of customer service and scientific studies. We also read through countless user comments and reviews from all over the internet. At this point we summarized the facts and feedback we discovered to give you the important information you need.

EDITOR'S TIP: Substitute Stimerex ES with a proven fat burner such as Leptigen for better results.

What You Need To Know

First off, Stimerex ES is advertised as the “world’s strongest diet and energy aid.” According to the official website, this supplement helps with rapid fat loss, extreme energy and serious weight reduction. The key ingredients in this supplement are ephedra extract, caffeine, acacia rigidula extract, theobroma cocoa extract, phenylethylamine hcl, citrus aurantium extract, green tea extract, yohimbe extract, 6,7 dihydroxybergamottin, naringen and 1,3-dimethylamine hcl. In order to use this one, you need to take 1-3 tablets per day.

Stimerex ES has been available since 2011 and it can be acquired through the official website. Free shipping is available and there is a 60-day return policy, but read on…

Ingredients – “Are They Safe?”

Our first concern relates to Stimirex ES ingredients. According to our Research Editor, “The formula contains ephedra as the key ingredient, which is a banned substance in the United States, in terms of use in diet supplements. It has been linked to serious side effects such as heart palpitations, increased blood pressure and vomiting.”

According to drugs.com, “Ephedra should not be used with other stimulant products (eg, caffeine), other cough and cold products, or as a dietary supplement for the purpose of weight-loss or bodybuilding. Doing so may increase your risk of…side effects.”

One customer stated, “Makes my heart pound like crazy and my head hurt.”

Side Effects – “A Reality”

Some customers have complained about adverse effects. In fact, one person mentioned, “Do not buy this. My husband has been on it for just 2 weeks and he is acting angry.”

“Expect nausea, increased perspiration and frequent visits to the toilet,” said another user.

The research we’ve done has shown if there is some particular aspect of a diet pill or weight-loss program that is especially concerning, the likelihood of real success for the long-term is slim. This means if Stimerex ES does in fact cause issues in a lot of people, this could be a major problem.

The Science – “Is There Any?”

From what we could gather, there is no clinical research presented on the company website to support the weight-loss claims regarding Stimerex ES. While this product does contain some serious stimulants to potentially boost thermogenesis, it may cause some adverse effects as well. At DietSpotlight, we prefer to see some solid evidence for support.

The Bottom Line – Does Stimerex ES Work?

So, should you buy Stimerex ES? Well, first of all, we appreciate that this supplement contains some beneficial ingredients such as green tea and there is a 60-day return policy posted on the website. On the other hand, we have some doubts about it because it’s not backed by actual clinical studies. Also, we noticed that the return policy does not work if you opened the bottle. Not to mention, it clearly contains some potentially dangerous ingredients, which can lead to serious side effects.

If you’d like to drop more weight, then we suggest you choose a product that contains safe ingredients, is backed by solid science and does not lead to harsh adverse effects.

Among the best products we’ve seen in 2016 is one called Leptigen. Its formula is a potent blend of four ingredients, which have been proven in documented clinical research to help boost metabolism and increase fat loss. You should also be aware that we can’t find any complaints of harsh side effects and the user comments online reveal people are seeing great results.

The makers of Leptigen are so excited about their product they’re offering a Special Trial Offer, which is very reassuring.

Learn More About Leptigen »
GD Star Rating

How Does Stimerex ES Compare?

Previous Stimerex ES Review (Updated April 17, 2012):

What You Should Know

Click Here To See Our Highest Rated Review

Many people look for a product that can help them burn fat and lose weight, and there are many products that promise this very thing. With so many options in weight loss products, it can be overwhelming to find the right product. How does Stimerex ES measure up against other fat burning products?

List of Ingredients

Acacia Rigidula Extract (leaves), [Yielding Phenylethylamine Alkaloids: methylsynephrine, B-Phenylethylamine, N-Methyl-B-Phenylethylamine, And R-Beta-Methylphenylethylanine Theobroma Cocoa Extract (Seed), Phenylethylamine HCL, Citrus Aurantium Extract (25mg Synephrine), Green Tea Extract (leaves), Yohimbe Extract (bark), Naringen (fruit), 6.7 Dihydroxybergamottin (fruit), Mucuna Pruriens Extract (20% Dopa), DMAE Bitartrate, L-Tyrosine Ethylester, L-Phenylalanine Ethylester, Caffeine (anhydrous) 150 mg , Microcrystalline Cellulose Dextrose, Sodium Starch Glucolate, Magnesium Stearate, Stearic Acid, FD&C Blue # 1, FD&C Red # 40

Product Features

Stimerex ES is a weight loss aid that has four different ways of helping the user lose the desired amount of weight. First, Stimerex ES burns fat. Second, it suppresses your appetite so that you eat less. Third, it boosts metabolism, and lastly, it is a diuretic and sheds excess water. The product claims to get rid of “stubborn fat” that is difficult for many people to lose. Users take one pill three times a day, usually with meals.

Stimerex ES used to be known for having ephedra as the active ingredient. It no longer contains ephedra. Rather, Stimerex ES uses caffeine to accomplish the fat burning effect. A common ingredient that is also in Stimerex ES is hoodia, an ingredient that is supposed to suppress one’s appetite. One problem with the use of hoodia is that hoodia has not yet been proven to actually suppress your appetite. The company claims that Stimerex ES was made after many scientific studies, but the website does not list these studies to back up the claim. In fact, the company’s website is mostly an outlet for promotion and sales, with very little information about the product itself.

Stimerex ES costs $39.95 for one bottle, if you purchase from the company. Other sellers have it for a few dollars less. Unfortunately, the company never mentions how long the bottle lasts. The product is a thermogenic fat burner, but some side effects have been reported. .

See Our Featured


  • Thermogenic fat burner that does not contain ephedra.
  • Boosts energy.


  • Side effects may cause problems for some.
  • The price is rather high, especially if the company is not clear on how long the supply will last.
  • Scientific research is claimed to have been conducted, but the studies are not published.
  • Website is not informative; rather, it is an outlet for promoting and selling the product.


Stimerex ES is just one of many thermogenic fat burners available. The less than informative website and the high price could turn customers away from this product. Though it does increase energy, Stimerex ES fails to stand out among fat burning supplements.

Stimerex ES Questions & Answers:

We dissected hundreds of user comments about Stimerex ES and made this helpful FAQ.

What are the side effects of Stimerex ES?

Stimerex ES side effects reported by customers may include headaches, nausea, upset stomach, anxiety, sleeplessness and jitteriness.

What are the ingredients in Stimerex ES?

Stimerex ES ingredients include ephedra extract, acacia rigidula, phenylethylamine, methylsynephrine, b-phenylethylamine, n-methyl-b-phenylethylamine, r-beta-methylphenylethylamine, theobroma, phenylethylamine hcl, citrus aurantium, green tea, yohimbe, naringen, 6.7 dihydroxybergamottin, mucuna pruriens, dmae, l-tyrosine, l-phenylalanine and caffeine.

Does Stimerex ES work?

The Stimerex ES website states that one of the ingredients was involved in a double-blind study, but there’s no links to the research. We’ve found solid science on caffeine and green tea, but the information doesn’t point toward this supplement.

You may want to think about what you want out of Stimerex ES and consider a supplement like Leptigen, which contains some clinically-tested ingredients.

How much does Stimerex ES cost?

Stimerex ES costs $14.95 for a 20-count bottle or $69.95 for 90 capsules.

How should I take Stimerex ES?

You should take one or two Stimerex ES capsules, twice per day. The company suggests not taking more than four in a 24-hour period. When used as directed, each container lasts between six and 45 days.

Can I take Stimerex ES if I have a health condition?

Women who are pregnant or nursing, those with health conditions, anyone taking prescription medications or under 18 years of age should contact a healthcare professional prior to using any weight-loss supplement, including Stimerex ES.

What do users like about Stimerex ES?

We found some users like that Stimerex ES was affordable and gave them a slight boost in energy.

What do users NOT like about Stimerex ES?

Some customers didn’t like not seeing results while taking Stimerex ES.

How do I contact the Stimerex ES customer service department?

You can contact the Stimerex ES customer service department by mailing letters to Hi-Tech Pharmaceuticals 6015 B Unity Sr. Norcross, GA 30071, sending messages through the feedback form, calling a representative at 1-888-855-7919 or by emailing an agent at customercare@hitechpharma.com.

Is there any mention of acacia rigidula in Stimerex ES?

Yes, there is mention of acacia rigidula in Stimerex ES. In April of 2015, the FDA addressed the ingredient and asked Hi-Tech Pharmaceuticals to change the label.

Is the ephedra extract in Stimerex ES the same as ephedrine?

No, the ephedra extract in Stimerex ES isn’t the same as ephedrine. The prior is an herb extracted from the plant.

How much caffeine is in Stimerex ES?

Each serving of Stimerex ES contains 150mg of caffeine.

Does Stimerex ES come with a guarantee?

Stimerex ES doesn’t come with a guarantee. You can contact the customer service department for details about the return policy.

Do you know of any special deals or discounts on Stimerex ES?

There are no deals or discounts on Stimerex ES, but some trusted retailers offer promotions from time to time. However, the last few months have been going wild taking advantage of Leptigen’s Special Trial Offer, which is simply the cost of shipping and handling. Click here to give it a try.

3 User Reviews About Stimerex ES

Leave comments below
  • 1

    did you ever find out if stimerex is metabolized in the liver?


  • 2

    is stimerex es excreted through kidneys or liver? Thank you 🙂


  • 3

    I personally have used… and still use Stimerex-ES.. Isn’t “Ephedra Extract” Leaves… Essentially.. Ephedra? In different form of course?? Also.. I like the energy I get from the stimerex but honestly the crash afterwards… kinda sucks. The effects don’t seem to last more than a couple hours and after all the cleaning I manage to get done at work… I feel like I need to eat! So to me the whole thing is kind of a gimmick.. Maybe we should look at excercise more eat better/less approach to dieting! There IS NO miracle pill that will make you look like a super model even if you starve! Hard work means great results! 😉


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