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Last updated: October 7, 2026 · By Martin Smith · How I research
The Smoothie Diet is a 21-day digital weight loss program from health coach Drew Sgoutas. It replaces two daily meals with smoothies while keeping one balanced whole-food meal. This Smoothie Diet review looks at what is in the plan, what research says about meal-replacement diets like it, what users report, side effects, and how buying and refunds work. I haven’t followed the program myself: the review is based on the official sales page, published research, and the user reviews I found.
✅ Ready to try The Smoothie Diet? Check today’s price on the official site →
The Smoothie Diet at a glance
- What it is: a 21-day meal-replacement plan built on homemade smoothies
- Form: a digital program (PDF guides), with no physical product
- How to follow it: two smoothies a day in place of two meals, plus one whole-food meal, following the 3-week schedule in the guide
- Guarantee: 60 days, according to the sales page; you request a refund by email
- Best for: healthy adults who want a short, structured plan and are happy to make smoothies every day
- Who should skip it: anyone pregnant or breastfeeding, people with diabetes or blood sugar conditions, and anyone with a history of eating disorders, unless a doctor agrees
- My verdict in one line: meal replacement can help some people lose weight while they stick to it; the plan is simple and cheap to start, but what you do after day 21 is the real test
What Is The Smoothie Diet?
The Smoothie Diet is a structured 21-day weight loss program built around replacing two meals a day with smoothies. It is sold by Drew Sgoutas, who describes himself on the sales page as a certified health coach and adds that he is not a doctor. It is delivered as a digital guide, so you get access straight after purchase, with ClickBank handling checkout as the retailer.
How the Creator Says The Smoothie Diet Works
According to the sales page, the smoothies are given “in a very specific sequence and frequency”, and the “nutrient and ingredient ratios vary week to week” to keep the weight coming off. The sales page also says you can continue the plan after 21 days and explains how to move back to regular meals while keeping some smoothies.
In practice, the plan works the way any meal-replacement diet does: replacing two meals with smoothies lowers your daily calories, which creates a calorie deficit. How full the smoothies keep you, and how well you eat at the third meal, decide whether that deficit holds.
What’s in The Smoothie Diet Plan
According to the sales page, you get:
- The 21-day program: a 3-week schedule saying which smoothie to have and when
- Over 36 smoothie recipes for meal replacement
- Shopping lists for each week, and a “swap list” of substitutes
- Smoothie-making tips and a prep guide
- Bonus: a 3-day smoothie detox, to use before the main program or after going off track
- Bonus: a quick-start guide, a 20-page printable version of the main guide
You’ll also need a blender and a weekly food budget for the fruit, vegetables and protein in the recipes.
What Research Says About Each Part of the Plan
| Part of the plan | What the sales page says | What published research says | Evidence | Study |
|---|---|---|---|---|
| Replacing two meals a day | “Replace certain meals with the smoothie recipes I provide” | A 2019 meta-analysis of randomized trials found that weight loss programs using meal replacements led to more weight loss at one year than other diets. The trials used fortified commercial shakes or bars, not homemade smoothies. | Some | Astbury et al., 2019 |
| Drinking meals instead of eating them | Smoothies designed to be filling | In a small crossover study, people didn’t eat less to make up for calories they drank (soda), but they did for the same calories eaten as solid food. Smoothies with fibre and protein may be more filling than soda, but this is worth keeping in mind. | Limited | DiMeglio & Mattes, 2000 |
| The 3-day smoothie detox | “Clear out the cobwebs” and lose weight quickly | A critical review found very little clinical evidence for detox diets and no randomized trials of commercial detox diets in humans. | None found | Klein & Kiat, 2015 |
How I grade the evidence: Strong means consistent results in large, good-quality trials; Some means a modest effect across several trials; Limited means small, short or uncertain results; None found means I found no trials showing an effect.
What the Research Means for The Smoothie Diet
I didn’t find clinical trials of The Smoothie Diet itself, but the approach it uses has been studied. An earlier 2003 analysis of six trials also found that people who replaced one or two meals a day with a meal-replacement shake lost more weight at three months and at one year than people on a standard reduced-calorie diet with the same calorie target. Those trials used commercial meal-replacement products, not homemade smoothies, so the results may not carry over directly to a smoothie plan, and they depended on people sticking with the plan: consistency matters more than any single recipe.
It also explains why two people can follow the same plan and get very different results. How closely you stick to the plan is the biggest factor, followed by your starting weight, your activity level and whether the smoothies contain enough protein to keep hunger under control.
What the Creator Says The Smoothie Diet Does
According to the sales page, the program brings “rapid weight loss”, more energy, clearer skin, better sleep, sharper thinking and stabilized blood sugar. These are the creator’s claims. I found no trials of the program, and the research above supports modest weight loss from meal replacement, not these wider benefits.
The Smoothie Diet Side Effects: Is It Safe?
The Smoothie Diet appears to be well tolerated by many healthy adults in the reviews I found, when followed as directed. However, some users do experience mild side effects during the first few days as the body adjusts to a significant change in diet:
- Mild headaches — often caused by reduced caffeine or sugar intake
- Low energy in days one to three — common during any calorie reduction phase
- Digestive changes — increased fibre from fruits and vegetables can cause temporary bloating
These effects are typically short-lived and resolve on their own by day four or five. The program is not recommended for pregnant or breastfeeding women, people with diabetes or blood sugar conditions, or anyone with a history of eating disorders. If you have an existing medical condition, consult your doctor before starting.
Smoothies made mainly of fruit can be high in sugar, so check that each one includes vegetables and a protein source. The sales page suggests the plan may help people with type 2 diabetes. If you have diabetes, talk to your doctor before changing your meals, especially if you take medication that lowers blood sugar.
How To Follow The Smoothie Diet
According to the sales page, you replace two meals a day with the smoothies in the 3-week schedule and eat one balanced whole-food meal, using the weekly shopping lists. The quick-start guide is a short printable version if you’d rather not read the full guide. The sales page says you can continue after 21 days and explains how to move back to regular meals. Talk to your doctor before starting if you have a medical condition.
What Users Report
In the reviews I found, many users say the plan is easy to follow and that sugar cravings eased after the first few days. Many also report noticeable weight loss over the 21 days, especially in the first week, with results varying based on starting weight, activity level, and how closely the plan is followed. The program tends to work best for people who are consistent with both the smoothies and the evening meal.
The Smoothie Diet Complaints: What Are People Saying?
No program is without its critics, and The Smoothie Diet is no exception. Common complaints in the reviews I found include:
- Hunger in the first 2 to 3 days — the body takes time to adjust to liquid meals, and some people find the smoothies less filling than a solid breakfast initially
- Repetitive flavours — while 36 recipes sounds like plenty, some users feel the rotation becomes predictable by week two
- Requires a blender — this sounds obvious but is worth noting; without a good quality blender, the texture of some smoothies is less enjoyable
- Not suitable for very active lifestyles — people with high daily energy demands such as manual workers or serious athletes may find the calorie level too low
These are worth weighing up before you buy.
The Smoothie Diet Pros & Cons
| Pros | Cons |
|---|---|
| Simple, structured 21-day plan with shopping lists | No published trial of the program itself |
| Meal replacement has trial evidence for modest weight loss | Homemade smoothies weren’t what the trials tested |
| Instant digital access, no subscription, according to the sales page | Hunger and low energy are common in the first days |
| 60-day money-back guarantee | Needs a blender and a weekly food budget |
| Includes a plan for moving back to regular meals | The “detox” bonus has no good evidence behind it |
The Smoothie Diet Price, Guarantee and How Buying Works
The Smoothie Diet is a one-time digital purchase. See the official website for current pricing. After checkout you can download the PDF guides straight away on a computer, tablet or phone, and nothing is posted to you. The checkout may offer optional add-ons, which you can decline.
The 60-day money-back guarantee. According to the sales page, if the program isn’t for you, you can email for a full refund within 60 days. The contact address given on the sales page is support@healthcoachdrew.com. ClickBank, the retailer, also handles refunds for orders it processed through its customer support at clkbank.com.
👉 Check today’s price on the official site: The Smoothie Diet
Is The Smoothie Diet a Scam? How to Find the Real Website
No, The Smoothie Diet is not a scam. It is a real digital program sold through ClickBank, with a 60-day money-back guarantee. To make sure you get the genuine program:
- Buy through the official sales page at smoothiediet.com (go.smoothiediet.com), where checkout is run by ClickBank.
- It is digital only: you shouldn’t be sent anything in the post, and printed copies or “PDF bundles” from other sellers aren’t covered by the guarantee.
- Use the contact address on the official page for questions and refunds.
Go Health Reviews isn’t the creator or seller of The Smoothie Diet. My links go through ClickBank’s affiliate redirect to the official sales page, and I earn a commission if you buy, at no extra cost to you.
Read the sales page with care. It shows customer weight-loss stories and before-and-after claims that it says aren’t typical, a countdown-style “ending soon” discount, and claims that the plan can help reverse type 2 diabetes. Results vary, and diabetes needs your doctor’s advice.
Before You Start: Questions Worth Asking
A smoothie plan only works if you can stick with it and have a plan for what comes after. Before you start, it’s worth asking:
- Is there enough protein in each smoothie to keep you full for a few hours? Recipes that rely mostly on fruit and juice can leave you hungry and push up your sugar intake.
- What happens after day 21? Registered dietitians commonly caution that any plan built on liquid meals needs a clear transition back to regular meals, or the weight tends to come back.
- What will it cost each week? The program is a one-off purchase, but you’ll still be buying fruit, vegetables and protein every week.
Treat “detox” claims with caution, including optional detox add-ons. Your liver and kidneys already handle detoxification, and quick drops on the scale during short cleanses are mostly water and reduced food volume. My BellyFlush review looks at one such “flush” product, which turned out to be a senna-based laxative.
Alternatives to The Smoothie Diet
- 7-day smoothie weight loss plan: my own free plan with recipes, if you want to try smoothies before buying a program.
- Okinawa Flat Belly Tonic review: a powdered drink mix, if you’d rather add a supplement than change meals.
- Berberine supplement review: one of the better-studied supplement ingredients for modest weight loss.
For a side-by-side ranking, see my best weight loss supplements 2026 guide.
Final Verdict: Is The Smoothie Diet Worth It?
The Smoothie Diet is a simple, low-cost way to try a meal-replacement diet. It needs no special equipment beyond a blender and little meal preparation, and many users in the reviews I found report noticeable results when they follow it consistently over the full 21 days. Research on meal replacement supports modest weight loss, although those trials used commercial shakes rather than homemade smoothies.
Hunger in the first few days and repetitive recipes are the main complaints. The bigger question is what you do after day 21, so plan your move back to regular meals before you start. Skip the “detox” bonus, which has no good evidence behind it.
I think it suits:
- People who want a structured plan without complex meal planning
- Anyone who struggles with portion control or calorie counting
- Those looking for a clean, whole-food based reset
I do not recommend it for:
- People with medical conditions affecting blood sugar or digestion
- Anyone who cannot commit to the full 21-day structure
- Very physically active individuals with high daily calorie needs
Frequently Asked Questions
Q1: What is The Smoothie Diet and how does it work?
The Smoothie Diet is a 21-day digital weight loss program created by health coach Drew Sgoutas. It works by replacing two daily meals with nutrient-rich smoothies while keeping one balanced whole-food meal, creating a calorie deficit that may support gradual weight loss.
Q2: How much weight can you lose on The Smoothie Diet?
Weight loss over the full 21 days varies depending on starting weight and how closely the program is followed. Many users in the reviews I found say the biggest change came in the first week, but results vary.
Q3: Are there any side effects of The Smoothie Diet?
Some users experience mild headaches, low energy, or digestive changes during the first three to four days. These are temporary and typically resolve on their own as the body adjusts. The program is not recommended for pregnant women or people with blood sugar conditions.
Q4: What are common complaints about The Smoothie Diet?
In the reviews I found, the main complaints are hunger during the first few days, some repetitiveness in the recipe rotation by week two, and the need for a good quality blender.
Q5: How long is the money-back guarantee?
60 days, according to the sales page. You request a refund by email, and ClickBank, the retailer, also handles refunds for orders it processed.
Q6: Where can I buy The Smoothie Diet safely? The Smoothie Diet is only available through the official website. It is a digital program so there is no physical product to ship — you receive instant access after purchase. Visit the official Smoothie Diet page.
Disclaimer: This review is for informational purposes only. Individual results may vary. Always consult a healthcare professional before starting any new diet program. This content may contain affiliate links.