First Words

Is Slenderiiz a Scam?

Let’s tackle the big question upfront: Is Slenderiiz a scam?

No, Slenderiiz is not a scam. It’s a legitimate product sold through Partner.Co (formerly ARIIX), a company that’s been operating since 2011. You get real products, real customer support, and a 30-day money-back guarantee. The company is transparent about what’s in their drops and how the program works.

That said, there are some important things you should know before buying. The products are homeopathic formulas—and the scientific community has mixed opinions about homeopathy. Some people report great results with Slenderiiz, while others haven’t seen the changes they expected.

The biggest concern isn’t the product itself, but how it’s sold. Slenderiiz is marketed through a multi-level marketing (MLM) structure, which means distributors earn commissions from sales and recruiting. This business model has its pros and cons, which we’ll get into later.

Quick Take: Slenderiiz is a real product from a real company, but it’s worth understanding exactly what you’re getting before spending your money.

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Quick Summary

Here’s what you need to know at a glance: Slenderiiz is sold by Partner.Co (formerly ARIIX), a company founded in 2011. The main products are Slenderiix and Xceler8 drops, which are homeopathic weight loss supplements. A one-month supply costs between $154 and $188 depending on where you buy it. The company uses an MLM business model and offers a 30-day money-back guarantee. Overall rating: 3 out of 5 stars.

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What is Slenderiiz?

Slenderiiz is a weight management system built around two liquid supplements you take before meals. It’s produced by Partner.Co, a health and wellness company that merged several MLM brands (ARIIX, Noni, LIMU, and Zennoa) into one platform in 2023.

The program consists of two main products:

Slenderiix Drops – A homeopathic formula designed to help your body release stored fat, control appetite, and signal your hypothalamus to mobilize fat stores.

Xceler8 Drops – A companion formula with methylcobalamin (vitamin B12), biotin, and adaptogenic herbs meant to boost metabolism and enhance the effects of Slenderiix.

The system isn’t just about the drops. It comes with a structured eating plan that limits you to 1,250 calories per day and provides a list of approved foods. The program has three phases: preparation, active weight loss, and maintenance.

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How Does Slenderiiz Work?

The Slenderiiz program follows a three-phase approach that combines the drops with a calorie-restricted diet.

Phase 1: Preparation (2 days)

You start taking the drops as directed while eating normally. The company recommends avoiding fast food during this phase. They also suggest taking Restoriix, a detox supplement, to help remove toxins from your body. This phase is about getting your body ready for the calorie restriction ahead.

Phase 2: Active Weight Loss (as long as needed)

This is where the real work happens. You continue taking both drops before meals and follow a strict 1,250-calorie-per-day eating plan. You’ll choose foods from an approved list and drink ten 8-ounce glasses of purified water daily. The water is supposed to help flush out toxins released during weight loss.

Phase 3: Maintenance (ongoing)

Once you hit your goal weight, you gradually add back limited glycemic foods while continuing to eat clean, fresh foods with regular exercise. This phase is meant to be a lifestyle change to prevent the weight from coming back.

The drops themselves contain highly diluted homeopathic ingredients. Slenderiix includes things like Ammonium Bromatum, Calcarea Carbonica (from oyster shells), Fucus Vesiculosus (a type of seaweed), and several other substances diluted to the point where there may be no measurable amount of the original ingredient left.

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The Science Behind Slenderiiz

Here’s where things get a bit complicated. Slenderiiz is based on homeopathy, which is a controversial approach in the medical community.

Homeopathy operates on the principle of “like cures like” and uses extremely diluted substances. The ingredients in Slenderiix are diluted to 6X or 12X potency, meaning they’ve been diluted multiple times. At these dilution levels, there might not be any actual molecules of the original substance remaining in the formula.

The National Institutes of Health (NIH) includes this disclaimer about Slenderiiz: “This homeopathic product has not been evaluated by the Food and Drug Administration for safety or efficacy. FDA is not aware of scientific evidence to support homeopathy as effective.”

In 2014, the UK’s Advertising Standards Authority investigated Slenderiiz. The company provided a self-funded study claiming participants lost weight, but the ASA ruled the claims misleading. The main issue was that the weight loss could easily be attributed to the restrictive 1,250-calorie diet rather than the drops themselves.

That said, some people do report positive experiences with Slenderiiz. Whether this is due to the drops themselves, the structured program, or a placebo effect is up for debate.

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Slenderiiz Products and Ingredients

Let’s break down what’s actually in these drops.

Slenderiix Contains:

• Ammonium Bromatum (12X) – traditionally used for respiratory issues
• Avena Sativa (6X) – from oats, thought to support the nervous system
• Calcarea Carbonica (6X) – from oyster shells, claimed to suppress appetite
• Fucus Vesiculosus (6X) – seaweed rich in iodine for thyroid function
• Nux Vomica, Ignatia Amara, Graphites, and other homeopathic ingredients

Xceler8 Contains:

• Methylcobalamin (vitamin B12)
• Biotin (vitamin H)
• A blend of adaptogenic herbs

The company also recommends supplementing with their Nutrifii line (Optimals, Omega-Q, Rejuveniix) to maintain proper nutrition while on the low-calorie diet.

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Does Slenderiiz Actually Work?

This is the big question, and the answer is… complicated.

Some people report losing weight with Slenderiiz. In a clinical study mentioned by the company, participants using Slenderiiz lost more than twice as much weight as those who didn’t use the products. However, all participants followed the 1,250-calorie diet.

Here’s the thing: a 1,250-calorie diet will cause weight loss for most people regardless of whether they take any supplements. The average adult needs around 2,000-2,500 calories per day to maintain their weight. Cutting down to 1,250 creates a significant calorie deficit.

Many users report initial weight loss but then experience a plateau. This is common with very low-calorie diets because your metabolism can slow down in response to reduced food intake.

The real question is whether the drops add any benefit beyond what you’d get from just following the diet plan. The scientific evidence for homeopathy in general is weak, and there’s no peer-reviewed, published research showing that Slenderiiz drops themselves cause weight loss independent of the calorie restriction.

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Slenderiiz Pros and Cons

Pros:

The program provides structure, which some people need to stay on track. You get a clear eating plan and food list rather than having to figure everything out yourself. The drops are easy to use and fit into a busy lifestyle—just a few drops before meals. Some people do report positive results and successful weight loss. The 30-day money-back guarantee gives you a safety net if it doesn’t work for you. Partner.Co has been around since 2011, so it’s not a fly-by-night operation.

Cons:

The 1,250-calorie diet is extremely restrictive and difficult to maintain long-term. The products are based on homeopathy, which lacks strong scientific support. They’re expensive—$154-$188 per month adds up quickly. The weight loss is likely due to calorie restriction rather than the drops themselves. The MLM business model means you’re often buying from friends or family who earn commissions. There have been reports of side effects like headaches, fatigue, and digestive issues.

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How Much Does Slenderiiz Cost?

Slenderiiz isn’t cheap. The regular price on Partner.Co’s website is around $188 for a one-month supply of both drops. Some distributors sell it for less—around $154 if you buy directly from them.

You can also find Slenderiiz on sites like Amazon, eBay, and Walmart, but the company warns against buying from unauthorized sellers. They say you might get counterfeit or expired products. Whether that’s a real concern or just a way to push people toward buying from distributors is hard to say.

If you want to follow the complete program as recommended, you’ll also need to buy their other supplements like Restoriix (detox), Optimals, Omega-Q, and Rejuveniix. This can push your monthly cost well over $300.

Compare that to other weight loss programs. NutriSystem used to run promotions for $199 per month (which included food). Weight Watchers and similar programs typically cost $20-60 per month depending on the plan.

One distributor made the point that you save money on food since you’re eating less. That’s technically true, but you’re also paying a premium for supplements that may not provide benefits beyond a regular multivitamin.’

 

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The MLM Business Model

This is important to understand if you’re thinking about buying Slenderiiz or becoming a distributor.

Partner.Co (and ARIIX before it) uses multi-level marketing, which means products are sold through independent distributors rather than retail stores. Distributors earn money in two ways: selling products directly to customers and recruiting new distributors to build a “downline.”

Two Types of Customers:

Retail customers just buy the products for personal use from distributors.

Member-Distributors join the network, buy products at a discount, resell them for profit, and recruit others to build their team.

In the US, there’s also a Preferred Customer option—these are wholesale customers who get 25% discounts but can’t resell or recruit.

The Problem with MLMs:

The MLM model is controversial because most people who join as distributors don’t make much money. The vast majority of income goes to those at the top of the pyramid who got in early and built large downlines.

In 2016, the Federal Trade Commission (FTC) settled with ARIIX after allegations of operating like a pyramid scheme. The settlement required ARIIX to prove that 80% of its sales went to customers outside the distributor network, not just to distributors themselves. They also had to tie distributor rewards to actual retail sales, not just recruitment.

Reviews on Glassdoor from people who worked with ARIIX paint a mixed picture. Some loved the products and community. Others said they lost thousands of dollars and felt pressured to recruit friends and family.

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Slenderiiz Compensation Plan

If you’re thinking about becoming a distributor, you need to understand how you’d actually make money.

Partner.Co uses the Activ8 compensation plan, which ARIIX developed. It’s complex—like, really complex. The compensation document is pages of dense text with complicated algorithms.

How Distributors Earn:

Retail commissions from the markup between wholesale and retail prices. Team commissions from sales made by people you recruit. Bonuses for hitting certain volume targets. Leadership bonuses when your team grows large enough.

The catch is that you need to maintain a monthly autoship order to stay “active” and earn commissions. This means buying products every month whether you need them or not.

Critics say the plan is designed to benefit “heavy hitters” who already have large followings, while average people struggle to break even. One former distributor on Glassdoor said they spent $5,000 on products expecting to make it back quickly, but made no money after months of effort.

The reality is that in most MLMs, the majority of participants either lose money or make very little. The FTC estimates that 99% of people who join MLMs lose money.

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Is Slenderiiz Safe?

For most healthy adults, taking Slenderiiz drops is probably safe. They’re highly diluted homeopathic remedies, which means there’s very little of the actual ingredients present.

That said, some people have reported side effects including:

• Headaches
• Fatigue and dizziness
• Nausea and abdominal discomfort
• Constipation
• Loss of appetite

The bigger safety concern is the 1,250-calorie diet. That’s extremely low, especially if you’re active or have a larger body size. Very low-calorie diets can lead to:

• Nutrient deficiencies
• Loss of muscle mass
• Slowed metabolism
• Fatigue and weakness
• Gallstones (in some cases)

The company explicitly states that Slenderiiz has not been tested for safety during pregnancy or breastfeeding. If you’re pregnant, nursing, or planning to become pregnant, you should not use this product.

Children under 4 should not use Slenderiiz. For kids over 4, consult a pediatrician first.

If you have pre-existing medical conditions—especially kidney disease, diabetes, liver problems, or thyroid issues—talk to your doctor before starting Slenderiiz. The same goes if you’re taking any medications.

There have been some reports of liver damage associated with other ARIIX/Partner.Co products, though these cases are rare. In 2007, Israel’s Ministry of Health issued warnings after cases of liver damage were reported. Similar warnings came from Spain in 2008.

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Customer Reviews and Experiences

Reviews for Slenderiiz are all over the place.

Some people love it. They report losing 10-20 pounds in the first month and feeling more energetic. These positive reviews often come from distributors who have a financial incentive to promote the product.

Others are disappointed. Common complaints include:

• Initial weight loss followed by a plateau
• Difficulty maintaining the 1,250-calorie diet
• No noticeable difference from just dieting alone
• Regaining weight after stopping the program
• Feeling hungry and tired throughout the day

On Facebook groups and Reddit threads, you’ll find mixed opinions. Some people swear by it, while others feel they wasted their money.

One registered dietitian who reviewed Slenderiiz said the name alone made her “want to throw up” and questioned the scientific basis of the product.

The Better Business Bureau listing for Slenderiiz shows an A+ rating, but that doesn’t mean much—it just means the company responds to complaints. There aren’t many customer reviews on the BBB site to get a sense of overall satisfaction.

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Slenderiiz vs. Alternatives

If you’re looking for weight loss solutions, there are plenty of alternatives to consider.

Other MLM Weight Loss Programs:

• Herbalife – Similar meal replacement approach, also MLM
• Plexus – Focuses on gut health and supplements, also MLM
• Optavia – Meal replacements with coaching, also MLM

Traditional Weight Loss Programs:

• Weight Watchers (WW) – Points-based system with community support
• Noom – Psychology-based app with coaching
• MyFitnessPal – Free calorie tracking app

Medical Options:

• Prescription medications like Ozempic or Wegovy
• Medically supervised weight loss programs
• Bariatric surgery for severe cases

DIY Approach:

• Calculate your calorie needs and create a moderate deficit (500-750 calories below maintenance)
• Focus on whole foods, lean proteins, vegetables, and fruits
• Add regular exercise—both cardio and strength training
• Track your food and progress
• Get support from friends, family, or online communities

The DIY approach is the cheapest and gives you the most flexibility. You’re not locked into buying specific products or following someone else’s rules.

If you want structure, programs like Noom or WW are much more affordable than Slenderiiz and based on established behavioral science. They teach you sustainable habits rather than relying on supplements.

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Frequently Asked Questions

Is Slenderiiz FDA approved?

No, but that’s normal. The FDA doesn’t approve dietary supplements, cosmetics, or food products for safety or effectiveness. However, Slenderiiz products are certified by the National Science Foundation (NSF), which does independent testing.

Can I use Slenderiiz while pregnant or breastfeeding?

No. The company explicitly states the products haven’t been tested for safety during pregnancy or lactation. Don’t risk it—talk to your doctor about safe weight management during and after pregnancy.

How long does it take to see results?

Most people who lose weight on Slenderiiz see results in the first week or two. But remember, this is likely due to the calorie restriction and initial water weight loss, not magic drops.

Will I gain the weight back?

Probably, unless you make permanent lifestyle changes. Most people regain weight after stopping very low-calorie diets because they haven’t learned sustainable eating habits. The maintenance phase is crucial, but it’s also where most people struggle.

Can I take Slenderiiz with other supplements or medications?

Maybe, but check with your doctor first. Some ingredients might interact with medications, especially those for thyroid conditions, diabetes, or blood pressure.

Is Slenderiiz vegan?

Not all Slenderiiz products are vegan. Some contain ingredients derived from animals, like Calcarea Carbonica from oyster shells. Partner.Co does offer some vegan products in their overall line, but check the specific ingredients if this matters to you.

Where can I buy Slenderiiz?

You can buy directly from Partner.Co’s website, from independent distributors, or from sites like Amazon and eBay. The company recommends buying from authorized sellers to ensure you get genuine products.

How much weight can I realistically lose?

The company’s study claims users lost “more than twice as much” as those who just dieted. In reality, on a 1,250-calorie diet, you might lose 1-3 pounds per week, with more in the first week (mostly water weight). Individual results vary widely based on your starting weight, metabolism, activity level, and adherence to the program.

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Final Verdict: Should You Try Slenderiiz?

Here’s the honest take: Slenderiiz might help you lose weight, but it’s probably the calorie restriction doing the heavy lifting, not the drops themselves.

You might consider Slenderiiz if:

• You have money to spend and want a structured program
• You need accountability and rules to follow
• You’ve tried other approaches and want something different
• You like the idea of drops rather than pills or shakes
• You have a distributor friend and want to support them

Skip Slenderiiz if:

• You’re on a tight budget—there are cheaper options
• You’re skeptical of homeopathy and MLM products
• You have medical conditions that make very low-calorie diets risky
• You’re looking for a long-term sustainable solution
• You don’t want to feel pressured to become a distributor

The bottom line is this: any very low-calorie diet will cause weight loss initially. Slenderiiz adds structure and some vitamins, but you could achieve similar results by tracking calories with a free app, taking a multivitamin, and saving yourself $150+ per month.

If you do decide to try Slenderiiz, use the 30-day guarantee. If you’re not seeing results or experiencing side effects, get your money back.

Whatever you decide, focus on building habits that last. The best weight loss plan is one you can stick with for life, not just a few weeks or months.

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Conclusion

Slenderiiz is a legitimate weight loss system, not a scam. But “legitimate” doesn’t automatically mean “effective” or “worth the money.”

The program combines homeopathic drops with a very restrictive 1,250-calorie diet. While some people lose weight using it, the scientific evidence suggests the calorie restriction is doing most of the work, not the drops themselves.

At $150-$188 per month, Slenderiiz is expensive, especially when you factor in the recommended additional supplements. The MLM business model adds another layer of complexity—and potential pressure to become a distributor yourself.

There are more affordable, scientifically-backed approaches to weight loss that teach sustainable habits rather than relying on supplements. But if you’re drawn to Slenderiiz and can afford it, the 30-day money-back guarantee gives you a way out if it doesn’t work.

The most important thing is finding an approach that works for your body, your lifestyle, and your budget—and that you can maintain long-term. Quick fixes and dramatic calorie restriction rarely lead to lasting change.

Whatever path you choose, consult with your doctor before starting any new weight loss program, especially one that involves significant calorie restriction or supplements. Your health is too important to leave to chance.