Lean Response

Updated May 23, 2019.
Published Jul 18, 2018.

Lean Response is a dodgy looking supplement that provides a UPS depot as the company’s sole address. This expensive supplement will have an unpredictable effect because it is impossible to know the strengths or the weaknesses of the proprietary blend. It may sound like a good deal to get two products but as neither of these is likely to do anything at all except possibly cause side effects, Lean Response does not seem worth the bother.


  • The live chat on the product website is helpful
  • Made in the USA, according to the customer service


  • Inadequate ingredients profile
  • High risk of side effects
  • No customer feedback available
Lean Response
Lean Response is a capsule that you take each day that instantly works on shrinking your stomach fibers, that is according to the advertising. And as well as the supplement, you get a free weight loss patch when you buy. All of this sounds a bit dodgy and unscientific to us, but are we being unfair? We take a look at Lean Response to find out more.

Lean Response is a company that sells just this one product, plus gives away a diet patch as part of the deal. We checked out their provided address in Maine but instead of a conventional office building or lab, found it was the UPS Store in Portland USA.

Lean Response Overview

What you need to know about Lean Response

Lean Response is a dodgy looking supplement that provides a UPS depot as the company’s sole address, so the people behind it are obviously trying to stay hidden for some reason. The supplement contains a blend of weight loss ingredients in unknown quantities and is not going to work; you cannot shrink your stomach in the way as claimed. Lean Response comes with a free weight loss patch called the Mymi Wonder patch. It may sound like a good deal to get two products but as neither of these is likely to do anything at all except possibly cause side effects, Lean Response does not seem worth the bother.

What are the side effects of Lean Response?

Many of the ingredients contained in this supplement are known for side effects. These include jitteriness, anxiety, insomnia increased heart rate and blood pressure, vomiting, nausea, loss of appetite, mood swings, increased risk of heart attack or stroke, stomach upset, digestive system upset, risk of internal bleeding, skin disturbances, diarrhoea, stomach pain, weakness, fatigue, and liver damage.

How much does Lean Response cost?

Lean Response is expensive. It is only obtainable via the Lean Response website and although all purchases come with the free gift of a weight loss patch called Mymi Wonder Patch, it still looks overpriced compared with other weight loss supplements on the market.

  • 1 x bottle of 30 capsules (15-day supply) costs $37.99
  • 30-day supply (60 capsules) costs $62.99
  • 45-day supply (90 capsules) costs $87.99
  • 60-day supply (110 capsules) costs $112.99

You can receive a 10% discount on your first order by signing up for the Lean Response newsletter.

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Lean Response Key Features

Lean Response is a weight loss supplement that promises to shrink your stomach fibers! This is not a very accurate description of the body in any way at all, but we guess they just mean shrink abdominal fat. And as this is a very common issue with most of us, it is an appealing claim.

Lean Response Key Points

  • Each 30 capsule bottle contains 15 days’ supply
  • Comes with a free gift, the Mymi Wonder Patch
  • The advertised company address is a UPS depot in Portland Maine
  • Facebook page but very few followers

So what is contained in this supplement? The proprietary blend adds up to 800mg per capsule, shared out between a whopping 14 ingredients! All the ingredients are popular in various types of weight loss supplement and include some stimulants such as Guarana (a source of caffeine) and Citrus Aurantium, plus fibre extract Caralluma Fimbriata. There is also Hoodia – a cactus extract that has been discredited by experts, Garcinia Cambogia and algae spirulina and chlorella. In fact, there are not many weight loss ingredients that are actually missing from this supplement! Check out the ingredients tab to find out more.

Not all the contents of Lean Response are safe, and the fact that the individual quantities are unknown makes this an added concern.

How to Take Lean Response

  • Take 2 capsules daily, before your largest meal of the day

Lean Response is on sale solely from the official Lean Response one-page website. There is also a Facebook page although this is not very popular and at the time of writing has only 249 followers.

When you buy Lean Response, you also get a free gift which is a South Korean weight loss patch called the Mymi Wonder Patch. You are supposed to use this in combination with Lean Response by sticking it to your fatty areas. We covered Mymi Wonder Patch in a previous Watchdog review, and found that it was totally ineffective and likely to cause pain and skin irritation when used.

Lean Response Concerns:

  • Very little information about the ingredients so effects may be unpredictable
  • The weight loss patch is known to cause pain and skin irritation
  • There is an advertised guarantee but we cannot see the company keeping to this promise

Lean Response does not come with much background information regarding manufacture or the identity of the company behind it. There is an address provided along with a customer phone number. When we checked out the address we found it was actually the UPS depot in Portland Maine, which was less than impressive.

We did, however, manage to contact Lean Response customer services via the live chat facility. We found out that Lean Response was manufactured in Revere Massachusetts, although no further details were provided.

What does Lean Response claim to do?

Lean Response is, according to the advertising,

The only way to eat less without surgery, frustration, dieting & risk!

A NATURAL WEIGHT LOSS SOLUTION; Lean Response is a capsule that you take each day that instantly works on shrinking your stomach fibers. After your stomach has shrunk, you will no longer feel hungry; the first few bites will be enough. You will eat half, even a quarter as much as you used to… there’s no doubt you’ll drop the pounds!

The effect is immediately visible: Your waist shrinks, your stomach flattens and you are immediately thinner

The key benefits are as follows:

  • You will see changes in your weight within the first week
  • Your appetite will decrease to a healthy level. Very little food will keep you satisfied!
  • You will lose weight all over, particularly in the stomach and thigh area
  • Digestion will greatly improve after only a few days
  • Your stomach will be flatter and you will feel lighter
  • Your liver will be purified and detoxified. Even your hair will be more lustrous and full of volume
  • An immediate visible difference in your skin (a glowing complexion) the whites of your eyes are brighter, bags under the eyes disappear
  • You will feel fantastic and renewed with self-confidence and enthusiasm

Does Lean Response work?

Sadly no. This supplement will not “shrink” your stomach, and is unlikely to help you lose excess belly fat. It will not improve your digestion or increase your appetite to a healthy level. No weight loss supplement works “instantly” as claimed, and it seems unlikely that this one will work at all.

With 14 ingredients shared out between 800mg in the proprietary blend, it is extremely unlikely that any of these will be in sufficient quantities to do very much at all. That said we don’t know whether one or two of the ingredients may overpower the others which could be in trace amounts. This is a concern because some of the contents are known for causing side effects. Hoodia, white willow extract which can cause internal bleeding, and Citrus Aurantium – dangerous for many because it increases heart rate and blood pressure, are just a few of the concerns about this supplement.

In addition, this whole premise of shrinking your stomach is wrong. According to the product information, once your stomach has shrunk you will no longer feel hungry and be tempted to eat too much. In truth, the size of the stomach does not change once we become adults. It does not expand, needing more food to make you feel full. The stomach is an organ so like the other organs the size is fixed once we reach adulthood.

Instead, the need to eat is managed by the appetite hormones leptin and ghrelin, and if you are seriously overweight or accustomed to more food, these hormones fail to signal that you are full.

That said, abdominal fat is a dangerous risk to health. Belly fat sits around the internal organs and can cause numerous problems including the risk of liver disease, heart problems, and more. It is also the place where most of us store the most fat. Losing weight here is good for health but if you rely on help from this supplement, you will be disappointed.

The weight loss patch is equally ineffective. It is impossible for these ingredients to enter the bloodstream via your skin, and the most likely result is skin irritation and pain.

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Lean Response Ingredients

Each capsule is equal to one serving. The information here is a general overview of the ingredients. Effects largely depend upon serving size which is unknown to the customer.

Proprietary Blend (800mg):

  • Green Tea Extract: High in antioxidants and full of health benefits switching to green tea over the more usual black tea can be effective for weight loss and health. In supplement form, the most usual serving size is around 300mg.
  • Guarana Extract: Brazilian bean extract that contains more caffeine than coffee.
  • Yerba Mate: Plant extract often used as a tea in its native South America. It contains caffeine so has a stimulant effect, but it is also high in vitamins and other nutrients. Some evidence suggests it can improve leptin function – the hormone that signals hunger
  • Caralluma Fimbriata: Cactus extract that may have benefits to health and weight loss. It may help improve leptin uptake and the reduction of body fat according to animal testing, but overall it seems to reduce appetite and can help some people stick to a healthy diet. Serving size is usually around 1000mg so unlikely to do much here. Source
  • Hoodia Gordonii: Once believed to be the miracle cure for obesity, these days it is considered a scam following stringent clinical testing. Known for a range of side effects but not much else. Source
  • Cha déBurge: Berry derived from a Brazilian tree, which is sometimes brewed as a coffee substitute. There are claims about its medicinal benefits and fat burning abilities, but it lacks evidence.
  • White Willow Bark: Contains Salicin a natural chemical used as pain relief and the basis of aspirin. Known for causing internal bleeding. Aspirin has been modified to avoid this effect.
  • Spirulina: Microscopic freshwater alga and a rich source of nutrients, leading people to describe it as a superfood. It is touted for numerous conditions such as bacterial infections, but there are some health risks due to potential contamination of the waters.
  • Chlorella: Freshwater algae with a nutritionally varied composition but no specific medical benefits. It can cause diarrhoea as a common side effect. Risk of environmental contamination.
  • L-Carnitine: Carnitine is similar to an amino acid and is present in all the cells of the body. It helps the body use fatty acids to produce energy
  • Citrus Aurantium: Bitter orange extract or Citrus Aurantium contains synephrine, which has an effect upon adrenaline and can put your body into a stressed fight or flight response. This response raises the heart rate and increases blood pressure, which is potentially dangerous. This ingredient can decrease the appetite by making you feel too stressed to eat.
  • Panax Ginseng: Adaptogen, meaning it generally improves feelings of wellness although scientists have not fully established how it works.
  • Garcinia Cambogia: Much touted plant extract that is believed to help weight loss. It contains Hydroxycitric acid (HCA) which is believed to help the body block a digestive enzyme called citrate amalyse, which breaks down carbs into fat. There is very little proof that it works as described. Source

Lean Response also contains 100 mcg of chromium. Chromium is used for improving blood sugar control in people with pre-diabetes, type 1, and type 2.

Lean Response Side Effects

Many of the ingredients in Lean Response are known for causing side effects. It is impossible to know whether these will depend upon the serving size, or even what the serving size is, but the information here is based on known risks of these ingredients.

This supplement may be high in caffeine so may cause:

  • Jitteriness
  • Anxiety
  • Insomnia
  • Increased heart rate and blood pressure

Other stimulants such as Citrus Aurantium is stronger and less tolerated, and may combine with caffeine to create a more powerful effect. Side effects include:

  • Vomiting
  • Nausea
  • Loss of appetite
  • Mood swings
  • Increased blood pressure
  • Increased heart rate
  • Dizziness
  • Increased risk of stroke or heart attack

White willow extract is known to cause:

  • Stomach upset
  • Digestive system upset
  • Risk of internal bleeding

Hoodia is known to cause:

  • Vomiting
  • Skin disturbances
  • Increased blood pressure and heart rate

If spirulina and chlorella are derived from contaminated sources it may cause:

  • Diarrhoea
  • Nausea
  • Stomach pain
  • Weakness
  • Vomiting
  • Liver damage

Many of the ingredients can cause similar side effects, so it is important to cease use and take medical advice should you experience any reactions, listed or not listed here.

Caution: Not suitable for individuals under 18. Avoid if you are pregnant or breast feeding. Seek medical advice before use especially if you have underlying health concerns or are taking prescription medication.

Lean Response Customer Feedback

There are no customer feedback comments available for Lean Response.

Lean Response Money-Back Guarantee

There is a money-back guarantee advertised for Lean Response. Here’s what the product information says about it:

If you’re not completely satisfied with the results simply return the bottles for a refund of the purchase price (less Shipping & Handling).

This guarantee is applicable on first-time orders only. When a reorder is placed, the guarantee is automatically voided.

We guess you return it to UPS in Portland.

Where To Buy Lean Response

You can only buy Lean Response via the product website.

Watchdog Verdict

We are not impressed with Lean Response. This expensive supplement will have an unpredictable effect, because it is impossible to know the strengths or the weaknesses of the 800mg proprietary blend. And with 14 listed ingredients, any permutation is possible.

We are also unimpressed by the claims on the website. You cannot shrink your stomach as claimed and although you can, of course, reduce stomach fat we feel that a company selling a supplement should have a basic knowledge of human biology, rather than inventing things to suit an advert.

We were initially concerned that Lean Response may have been manufactured in China. Not so, according to the live chat customer services, which was actually quite helpful. We were told that Lean Response was manufactured in the USA and we feel that this good point should have been made clear to customers.

That said it does not really matter where it has been made. It does not look very good or safe for customers to use, so we do not recommend Lean Response to the Watchdog, even if it does come with the free gift of the Mymi Wonder Patch.

In our opinion, the only wonder here is that people actually buy this supplement!

How does Lean Response compare to Phentaslim?

Criteria Lean Response Comparison Phentaslim comparison
Clinically Proven Ingredients
Side Effect Free
Positive Customer Reviews
24/7 Support
Money-back Guarantee

Disclaimer: Our reviews and investigations are based on extensive research from the information publicly available to us and consumers at the time of first publishing the post. Information is based on our personal opinion and whilst we endeavour to ensure information is up-to-date, manufacturers do from time to time change their products and future research may disagree with our findings. If you feel any of the information is inaccurate, please contact us and we will review the information provided.

Have Your Say

10 comments on 'Lean Response'

  1. I have been using Lean Response and I agree it can have an insomnia effect. Be sure not to take it close to bed time and cut back or stop drinking caffeinated products. As for results, I have definately had weight loss and slimming results. Very noticeable is my reduced appetite, which has helped greatly in reducing my caloric intake. Healthy smaller meals are a big change for me. Also, after 5 weeks I am down over a dress size and almost 2 sizes smaller in my jeans, give me another week to fully be down the 2 sizes. I do not do the scale after weighing in at 282. Instead I focus on how my clothes fit and how I feel. I leave the weight check up to my physician. Most success I have had ever.

  2. So if their address is a UPS shipping center, how am I supposed to get my money back? They claimed I was going to get a refund for the express shipping since it didn’t come within 3-5 days, still haven’t seen it. And I’ve been taking the pills almost a week now and nothing has happened except gaining 3 pounds already! So how can I get my money back?

  3. Today, I received a large twenty-three page pamphlet, suggesting the Lean Response capsule will
    give me excessive fat reduction in a matter of hours.
    That was a huge red light,to begin with.It goes on to say my stomach will shrink to 50% of it’s size in 72 hours,and i will lose 20 lbs. in 2 weeks.I states that Lean Response stops the assimilation of sugar and it’s transformation into fat.After doing some research,I found that Dr.Schmidt,who promotes this weight loss pill is affiliated with a clinic in Balanga,Bataan, located in the Philippines.
    This company is not transparent,at all. I will never purchase any type of supplement from a company that doesn’t reveal where the product is made,and, also,any interactions it may have with medications.
    Buyer beware. If it seems too good to be true,it probably is !

  4. If it seems too good to be true, I guess it is. I received a brochure in the mail with all the wonderful claims. No website listed, just a phone number (1-844-516-1073). There is an order form with a Revere, MA address listed. No ingredients listed at all. Two Drs., Schmidt & Furrer have their pictures in the brochures. Doctors of what? Doesn’t say. Tried looking them up on the internet… no luck. I’d conclude from all of this…DON’T FALL FOR IT!!

  5. If it seems too good to be true, I guess it is. I received a brochure in the mail with all the wonderful claims. No website listed, just a phone number (1-844-516-1073). There is an order form with a Revere, MA address listed. No ingredients listed at all. Two Drs., Schmidt & Furrer have their pictures in the brochures. Doctors of what? Doesn’t say. Tried looking them up on the internet… no luck. I’d conclude from all of this…BUYER BEWARE!!

  6. My name is Kelly Byers I BOUGHT 2 bottles of lEAN RESPONSE. I’M REAL EXCIDED I’M OING TO LOOSE THE MUFFIN &JELLO BUTT!So everyday i took the pills watch what ate .BUT guess what i’s all still there and i’m so mad! SEE I US TOWHIGHT 94lbs I ot real sick the meds &food,Igian 78lb anyways the point is they decived &stoled from me.I TRYED TO MAIL THE BOTTLES BACK&IT WAS AFAKE ADDRESS.

  7. I have tried this for a week with the opposite results of which they claim. I experienced no weight loss however I did gain 3 pounds in one week . I did not have loss of appetite. I felt jittery. I am not an obese person I just wanted to lose a few pounds and now I weigh more than I ever have in my life. I will be returning this I’ll let you know if we get a refund.

  8. I just received my first order; i already regret having ordered it.
    There is NO enclosure explaining anything about the pills, possible side effects.WHEN to take the pill (s).Just a note to take TWO capsules per day.
    In addition,in the brochure (20 pages)I received it refers 6 (six)
    times to taking ONE CAPSULE per day.
    I feel deceived; albeit through my own stuppidity.
    BUYER BEWARE!!!!!!

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