Updated May 8, 2019.
Published Dec 21, 2016.

ProbioSlim is a probiotic supplement that is made for aiding digestion. There are also some extra ingredients included that are geared more towards weight-loss. Whilst the probiotic aspect may well be effective, ProbioSlim is unlikely to help you lose weight. Our biggest concern with this product though is the auto-ship program. It follows the usual pattern: a free-trial is offered (14 days in this case), but if you don’t cancel within 18 days you are billed for the bottle you already received, and will be sent a bottle every month (and you are charged for each one, obviously). The customer service is predictably terrible, as the representatives are trained to do everything they can to stop you from cancelling, as well as to stop you getting a refund from the supposed money-back guarantee.


  • Available from third-party retailers without auto-ship program


  • Unlikely to aid significant weight loss
  • Auto-ship program when purchased from manufacturers
  • Many reports of terrible customer service
ProbioSlim is a probiotic supplement that the makers claim will improve your digestion and help you lose weight as well. The manufacturing company are offering a free 14-day sample which they state is risk free, but their terms and conditions suggest otherwise.

We take an in-depth look at ProbioSlim, to see how effective this supplement is at ‘offering digestive support’, and to see whether or not it can aid weight loss.

ProbioSlim Overview

What you need to know about ProbioSlim

ProbioSlim is a supplement that primarily offers ‘digestive support’, but the manufacturers also claim that it will aid weight management, helping the consumer to lose weight. The weight loss element of this supplement appears to be from increased bowel movements, and the use of green tea, a very mild weight loss aid; consumers who have purchased the product hoping to lose weight are often disappointed with the lack of continual results.

What are the side effects of ProbioSlim?

We have found several reports of consumers being allergic or sensitive to the ingredients found in ProbioSlim, and as the each capsule contains ‘about as much caffeine as one cup of coffee’, it is not suitable for anyone sensitive to caffeine and other stimulants.

The most common side effects appears to be an increase in bowel movements; in some people this is subtle, whilst other people have diarrhoea whilst taking ProbioSlim.

How much does ProbioSlim cost?

The price of ProbioSlim does vary between different retailers, and so it does pay to shop around in this case. However, for the most part, ProbioSlim is prohibitively expensive, with a 30 day supply costing $69.99 plus delivery from many stores, including the official website!

The official website claims to offer a ‘free sample’, but 18 days after ordering consumers are charged the full price of the product ($69.99). Customers who sign up for a ‘free sample’ are also put onto the company’s VIP Membership, which is a monthly auto ship program. Customers will receive a new bottle of the product monthly until they can contact the company to cancel, and there is supposedly a money back guarantee offered by the manufacturers; however, we have found numerous reports and complaints about customers who have tried to cancel their auto-ship program and obtain a refund, but who found it incredibly hard to do so!

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ProbioSlim Key Features

ProbioSlim is marketed as ‘The Probiotic Supplement That Helps You Lose Weight’ as well as help to regulate the consumer’s digestion.

Specifically, they state that ProbioSlim contains ‘Groundbreaking Probiotics and Prebiotics’ and ‘Revolutionary Weight Loss Ingredients’, which together make a ‘safe, effective supplement for holistic health’. Immediately we find this hard to believe; the product contains only one ingredient that could aid weight loss, which is green tea, not numerous weight loss ingredients, as they state.

ProbioSlim Key Points

  • Manufactured by ProbioSlim LLC
  • 60 capsules per bottle

Probiotic supplements are used to encourage the growth of “good bacteria” in your intestine. Your digestive system is home to millions of beneficial bacteria and this intestinal flora helps maintain the linings throughout the digestive system leading to a healthy digestive system. We have all seen the yoghurt advertisements that promote the use of probiotic supplements. When you think about it, it is a weird concept. It is estimated that between 500 and 1000 types of bacteria live in the human gut alone and we have both good bacteria and bad. Good bacteria inhibit dangerous food bacteria and prevent them from growing.

How to Take ProbioSlim

Take one capsule with breakfast and one capsule with dinner.

Digestive problems such as gas, bloating, constipation and diarrhoea can, in theory, be attributed to a lack of good bacteria. Probiotic supplements can help keep your “good bacteria” at healthy levels and your digestive system functioning efficiently.

ProbioSlim contains a patented formula called Lacto Spore. This probiotic supplement uses Bacillus Coagulans a bacterial species within the genus Bacillus. It is derived from milk and is believed to reduce IBS symptoms such as abdominal pain and bloating.

Lacto Spore is manufactured and distributed by the Sabinsa Corporation based in New Jersey. You cannot buy Lacto Spore direct but it is an ingredient in some health supplements, including ProbioSlim.

ProbioSlim also contains fibre – described as prebiotic – and nourishment for the probiotic microorganisms as well as green tea extract to help boost the metabolism and help weight loss.

ProbioSlim Concerns:

  • Unlikely to aid significant weight loss
  • Auto-ship program when purchased from manufacturers
  • Many reports of terrible customer service

ProbioSlim is manufactured by ProbioSlim LLC. The company have a poor rating and numerous customer complaints on The company’s Better Business Bureau page is ‘being updated’ and so there is no information available about them at all on the BBB website.

We found numerous complaints about ProbioSlim LLC, mostly relating to their terrible customer service and the autoship program that they enroll customers in when they sign up for a ‘free’, ‘no risk’ trial. Customers have tried cancelling their order before it shipped, once they realized that they would be charged for the supplement, and the product has been shipped regardless. Customer service representatives have been trained to avoid giving a full refund under all circumstances, despite the official website claiming that they offer a 30 day money back guarantee. They generally encourage consumers to keep using the product in case it does work and they change their minds about a refund, or offer to let them keep the product and receive a partial refund, usually less than half the amount that they have paid. Customers have also ordered the free trial, have never received any products, and have later been charged the full price of the supplement regardless.

What does ProbioSlim claim to do?

The manufacturers of ProbioSlim claim that the supplement has the following benefits:

  • Promotes Healthy Digestion
  • Improves Intestinal Flora
  • Helps You Lose Weight

They also state that ProbioSlim contains ‘Groundbreaking Probiotics and Prebiotics’ and ‘Revolutionary Weight Loss Ingredients’, which together make a ‘safe, effective supplement for holistic health’.

Does ProbioSlim work?

ProbioSlim may help to assist digestion, thanks to its probiotic content and fibre content, but it is unlikely to be more effective than any other probiotic supplement. The supplement is unlikely to aid significant weight loss, as it only contains a single ingredient that’s been associated with weight loss, which is green tea. The effects of green tea are limited, even at the ideal dosage, and the manufacturers have not provided the individual ingredient quantities, so it is impossible to know if the dose would even be effective.

Overall, we suspect that ProbioSlim is unlikely to aid significant weight loss.

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ProbioSlim Ingredients

The ingredients found in ProbioSlim are detailed below. The individual ingredient quantities are not listed, as the product consists of a proprietary formula. Each capsule contains 544 mg of the proprietary formula, with consumers being instructed to take two capsules per day.

LS3664™ Whole Health Superblend 544.00 mg

  • LactoSpore® Bacillus coagulans: A patented probiotic supplement that contains Bacillus Coagulans. This organism was first identified in 1915 and is derived from fermented milk. There is some evidence that it can improve abdominal pain and bloating in patients with Irritable Bowel Syndrome and it can help reduce the side effects of taking antibiotics such as thrush, as antibiotics kill stomach bacteria, which the probiotic would replace. There is little evidence to support its use by people who do not have digestive issues such as IBS.
  • Super EGCG Green Tea Leaf Extract (Camellia sinensis) (50% EGCG) (50% caffeine): Green tea is high in a group of antioxidants called catechins. Studies have suggested that catechins increase thermogenesis in the body, whilst caffeine increases energy expenditure by boosting the metabolism slightly for few hours.
  • Kiwi Extract (fruit) (Actinidia deliciosa): A source of fibre, described by the manufacturers as a pre-biotic. Fibre helps with digestion and to regulate bowel movements. However, a healthy adult needs between 21 and 38 grams of fibre per day for optimum health, and so we are unsure how the small amount of fibre found in ProbioSlim (significantly less than half a gram per two capsule serving) is supposed to make any noticeable difference to the consumer’s digestion.
  • Fig Extract (fruit) (Ficus carica): Another source of fibre.
  • Papaya Extract (fruit) (Carica papaya): Another source of fibre.

ProbioSlim Side Effects

Green tea contains naturally occurring caffeine. Significant quantities of caffeine can cause side effects such as headaches, increased urination, dehydration, jitteriness, increased heart rate, increased blood pressure, heart palpitations, and problems sleeping. Green tea can also cause constipation.

Although the fibre content of this supplement is not very high, consumers should always ensure that they drink plenty of water. Taking fibre supplements whilst dehydrated can cause constipation, and consuming large amounts of fibre can cause loose stools or diarrhoea.


Not suitable for anyone under the age of 18. Not suitable for pregnant or breastfeeding women. Not suitable for anyone who is sensitive to caffeine and other stimulants.

ProbioSlim Customer Feedback

There are many customer reviews both on GNC and Amazon. The customer reviews can be broadly grouped into two categories; customers who use the product for weight loss, and customers who use the product for reducing bloating and improving their digestive health. Customers who use the product purely to reduce bloating are generally much happier with ProbioSlim, whilst many people who wanted to lose weight are disappointed.

We have also found hundreds of complaints about the company’s auto ship program, their misleading ‘free sample’ offer, and their terrible customer service. Some people have been unable to contact the company at all; when they phone the company they only get a recorded message telling them to phone back during business hours.

I have been dealing with bloat and gas on a daily basis for several years. I would take Gas-X just to rake the edge off and be more comfortable. I have experimented with diet and increased water. Nothing really helped. I have been taking this for ONLY four days, and I feel so much better. My stomach is not distended, I have little to no gas, and the discomfort of bloat is gone. I wish I would have started taking this product years ago. Because my distended stomach is gone, I look like I have lost several pounds. The only issue I have had is loose stool, but that appears to be resolving itself. Great product so far.

This product didn’t work for me and I have been unable to contact them to cancel. The result is that they are deducting over $100AUD from my account on a monthly basis and I don’t know what to do other than report it as a scam and close my bank account.
The contact number they provide for Australia has a recording saying phone back during office hours, that’s despite whatever time you phone, day or night.
I suggest you avoid this con and then you won’t get ripped off like I did.

I ordered the free “no obligation” sample online. Then 18 days after I ordered (not received) the free sample my account if charged $74.98. When I called to say that I had not ordered anything but the free sample and had not authorized the charge I was told that when I put my credit card number in for the shipping charges on the free sample there was something on the left that “some people don’t see” that said they would send a bottle for $69.99 plus shipping every month. Obviously many people “don’t see” this information because the young man I spoke with didn’t seem at all surprised. In fact, he offered to refund me $41.99 today to settle the matter and be out $28.00 or I can wait until I received the product that I didn’t order and go jump through the hoops required and pay return postage and in a few weeks get the $69.99 back but still will be out both shipping charges. I find this to be a very deceptive and dishonest way to make money! There was nothing in the package that the free sample was in that said anything about additional product or charges. This may be a good production but I will not try the “free” sample and I would not do business with this company for this reason. Why not let people try the product and order it if they choose?

Be VERY careful when ordering this product online. They have hidden fees and sign you up automatically to a subscription.
Plus it is useless for weight loss. Tried it for 14 days, gave me gas and made me constipated.
Not recommended!

I can’t say this product helped me in any way. What did happen, was I found out I had an allergy to it. My skin was itchy, along with really itchy nostrils and scalp. When I stopped taking it, all of my problems went away.
The price though is good, compared to online retailers. So if this probiotic works for you, its a good buy

Did not lose one pound. As far as I am concerned this product is nothing but rip-off to get your money.

ProbioSlim Money-Back Guarantee

The returns policies offered on the official ProbioSlim sales website depend upon whether you have ordered the product as a one-time purchase, or whether you have ordered the ‘free sample’ and have been signed up for an auto-ship program (referred to as the VIP Membership program).

The ProbioSlim Guarantee: Return Policy for VIP Membership Deliveries:

ProbioSlim, LLC retains a total guarantee of customer satisfaction on all ProbioSlim VIP Membership products. If you, the buyer, are unhappy with the product for any reason — even if you’ve used the full supply of the supplement — you can return the remaining supply or empty bottle for a full refund of the purchase price minus shipping and handling.

To obtain your refund in the United States and Canada, call us at 1-877-869-3308 Mon-Fri: 9am – 9pm Eastern Time (US) and Sat: 12pm – 5pm Eastern Time (US). Customers in Australia, please call us at 1800-198-226. Customers in the United Kingdom, please call us at 0808-1019281. You will be given a Return Merchandise Authorization (RMA) number. To receive your refund, your return must be received at our shipping facility within 30 days of purchase. Be sure to clearly write the return merchandise authorization (RMA) number on the outside of the box. Our shipping department is NOT allowed to accept any packages without an RMA number. You pay for return shipping.

Return Policy for Standard Deliveries:

To be considered for reimbursement, products purchased through standard delivery (all non-VIP Membership purchased products) must be unopened and in the original packaging.

To return a product, you must do the following:
In the United States and Canada call us at 1-877-869-3308, Mon-Fri: 9am – 9pm Eastern Time (US) and Sat: 12pm – 5pm Eastern Time (US), within 30 days of purchase. Customers in Australia, please call us at 1800-198-226. Customers in the United Kingdom, please call us at 0808-1019281. You will be given a Return Merchandise Authorization (RMA) number. To receive a refund, you must postmark your return within 30 days of purchase. Be sure to clearly write the return merchandise authorization (RMA) number on the outside of the box. Our shipping department is NOT allowed to accept any packages without an RMA number. You pay for return shipping.

Please send your package to the appropriate facility:

* In the United States: ProbioSlim, BP 3, 105 Commerce Dr, Aston, PA 19014.

* In Canada: ProbioSlim Returns, P.O. Box 1051, Fort Erie ON L2A 6C7.

* In Australia: ProbioSlim, PO Box 535, Braeside VIC 3195.

* In the United Kingdom: ProbioSlim, PO Box 1417, Bedfordshire MK41 0QB.

We will not accept or issue a refund for any packages marked “return to sender” or refused that do not include a valid RMA number. If you return a package, we recommend that you obtain proof of shipment. Upon receipt of your returned product with a valid RMA number, a refund will be issued to your credit card. After the shipping department receives your return, it generally takes 3-5 business days or less to process your refund. Once a return is processed, it can take up to one billing cycle for this return to be posted to your account, depending on your credit card company or financial institution.

Where To Buy ProbioSlim

There are numerous purchasing options available for ProbioSlim.

The product is available from Amazon. A bottle containing 60 capsules costs $23.94 plus delivery charges. They also offer a bottle of 30 capsules for $15.79 plus delivery charges, or pack of three bottles (containing 90 capsules in total) costs $38.71 plus delivery charges.

GNC also sell ProbioSlim. A single bottle of 60 capsules costs $69.99, with free shipping. Anyone with a GNC membership pays the reduced price of $59.99. A GNC membership card costs $15 for a year’s membership, and give customers access to significant discounts. However, we only recommend getting one if you do shop at GNC regularly- the discount on one bottle of ProbioSlim is not enough to justify the purchase of a membership card. At the time of writing, GNC were offering a Buy 2, Get 1 Free Mix and Match deal, but this is not always available.

Finally, ProbioSlim is available from the manufacturer’s official website. We cannot stress this enough- we do not recommend purchasing from!!! Customers can purchase a single bottle (with no auto-ship) for $69.99 plus $4.99 shipping and handling. The website also claims to offer a ‘free sample’, with consumers just needing to pay the delivery charges. The terms and conditions reveal that 18 days after ordering the ‘free sample’, customers are charged $69.99 for the ‘free’ bottle they already have, and will receive a new bottle every 30 days, being charged $69.99 plus $4.99 shipping and handling each time, until the order is cancelled!!! The company even have the audacity to call this auto-ship program their ‘VIP Membership’, despite offering no discounts, and leaving many customers feeling scammed by the company!

Watchdog Verdict

We are not impressed by ProbioSlim at all. We believe that they overstate the potential weight loss benefits that the product offers, as there is only one active ingredient that could potentially aid weight loss, green tea. The company start misleading customers from the first few sentences on their sales page, stating that the product includes ‘Revolutionary Weight Loss Ingredients’ when the product contains only one weight loss ingredient, green tea, which is one of the most common diet pill ingredients in use.

The manufacturers of ProbioSlim have a terrible reputation, mostly due to their auto-ship program and terrible customer service. The manufacturers claim to offer a money back guarantee to auto-ship customers, but in reality it appears to be almost impossible to get a refund, as customer service representatives have been trained to avoid this at all costs. Although side effects appear to be minor in most cases, digestive problems appear to be relatively common, despite the purpose of the supplement being to reduce digestive issues.

If you suffer from digestive problems try changing your diet and lifestyle, and if that doesn’t work try seeing a specialist. Bloating and gas is often caused by food intolerance and you may find that once you identify the cause you can cure the problem. You should never leave digestive problems untreated because they can be a sign of something more serious.

This supplement appears to be unlikely to aid significant amounts of weight loss. If you want to take green tea for weight loss, drinking it in natural form or taking another supplement with the correct dosage may give you better weight loss results.

Overall, we do not recommend ProbioSlim to our readers.

How does ProbioSlim compare to Phentaslim?

CriteriaProbioSlim ComparisonPhentaslim 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

67 comments on 'ProbioSlim'

  1. your pills are good for nothing . I got a load and was on a good eating plan and never lost an ounce. I now know not to be taken in by these mailshots.

  2. I only wanted to try it out,but the so called free trial has put me on the automatic shipping list so im getting charged for something i dont want,be very careful of this,free trial doesn’t necessarily mean free!

  3. Here’s the cancellation number
    I just cancelled my subscription after reading the reviews and I didn’t even try it yet but I don’t plan on being billed and having probioslim sent to me monthly if it doesn’t even work

  4. I purchased the free sample for a couple dollars to try and suddenly my account was-79.00 and some change !!!! I was heated. Called and was told I can get HALF of my money back immediately ????

  5. Did nothing for me.
    Please read the fine print before buying this product , in the very fine terms your sample bottle for around $9 becomes $108 AUS dollars and charged to your credit card if you do not return the unused portion and cancel your 14 day trial.

  6. I want my money back, I sent away for trial was charged $9.90, then $38 and some then $114 and change without ever receiving my product. When it turned up I sent it back ! I want my money back even if it means involving the Federal Police!

    1. I am trying to cancel my Probio Slim, I am unable to do this as cannot find contact no or address.
      I also tried a free sample (which made me ill).
      I would have cancelled then, but can’t find anywhere to do this.
      Can you help me at all please.
      Pamela Bertrand

  7. John says;
    Typical shonky “FREE” sample. First 30 pills arrived 3 weeks after my order. The next order was placed automatically for $75 so now cancel the card. WOW after reading all this feedback how stupid am I, sucked in again by scammers. If it sounds too good to be true, it is.

  8. i tried probioslim and have cronic nonstop diarea explosive 3 wks now unstoppable.can not leave house no warning doctor has me on medicine and am still waiting for it to let up or stop.

    1. Hi Fred
      Just where did you unsubscribe. I don’t even have an email at this point.
      I would be very thankful for the info.
      $104 dollars a month for something I can’t even take is a bit rich.
      Why are they hiding, no phone no on parcel or no website that I can cancel.

  9. Thank you for your information n review on BioSlim products. Do you have their customer service phone number to call n make sure I did not sign up for monthly shipments of their products? I had constant cramping n constipation after trying their 3 bottle free offer.

  10. I ordered trial and almost immediately saw auto reorder. I called and even though they tried to send me another trial and extend reorder I was persistent. They cancelled my membership. Have only taken pills 5 days no problems yet.

  11. Ok so i have been taking this i have also veen taking omega 3 that they sent both for only 2 dollars to ship i dont get what everyone is talking about i was able to get ahold of tbem and cancelled with no problem when i did the sampme to begin with the woman i spoke to even told me about being charged if i did not cancel. I was gonna so it on the website but did not want to put my card info on the internet like that and even the sjte if people read said you would be charged. This does work for me i have lost 11 lbs in 2 weeks i have more energy i dont feel as hungry. And im able to keep up with my 3 kids. Its def not for everyone but it works for me and i have no complaints. I may not go through them to get it bc i can go to gnc to get it but i love it.

  12. I experienced the same thing. I did not see the small prints and recently observed four billings totalling over $200.00. I have never used the product. Too scared after seeing all the negative comments.

  13. I NEVER EXPERIENCED ANY POSITIVE EFFECTS but for being very anxious since I took this pill! They also UPSET ME by charging me for a new bottle I NEVER ORDERED IN THE FIRST PLACE!!!! They refused to refund all the charges and refused to send me a prepaid envelope to ship this stuff back to them! I also asked them to remove my name, address, any information about me and the credit card information also!!! I’m also calling the Attorney General in Nebraska about this company that they can just start charging me and ship me product I NEVER ORDERED!!! It is a BAD DEAL, in my eyes and charging you automatically is also UNWANTED!!!! I think that a legitimate company would never do this to anyone! I would just recommend to you all, to keep your money and credit card in your pocket!!!

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