Is Smoothie King slim and trim healthy?

Smoothie King’s Slim and Trim smoothies promise to help you lose weight and get fit. But are these low-calorie smoothies actually good for you? Let’s take a closer look at the ingredients, nutrition facts, and health benefits and drawbacks of Smoothie King’s Slim and Trim smoothies.

What is Smoothie King Slim and Trim?

Slim and Trim is a line of Smoothie King smoothies marketed as a healthy, low-calorie option for weight loss. Smoothie King says these smoothies can help you lose weight, build lean muscle, feel energized, and get all the nutrients you need.

The Slim and Trim smoothies have around 200 calories or less per 20 oz cup. They are made with fat-free yogurt, lots of fruits and vegetables, whey protein or plant-based protein powders, and other ingredients like green tea extract.

Some popular Slim and Trim smoothie flavors include:

  • Strawberry X-Treme
  • Caribbean Way
  • Island Green
  • Lean Machine
  • Rosemary’s Garden

Smoothie King recommends replacing one meal per day with a Slim and Trim smoothie as part of a balanced weight loss plan.

Slim and Trim Ingredients

Here is a look at some of the main ingredients found in Smoothie King’s Slim and Trim smoothies:


Fruits like strawberries, mangos, pineapples, bananas, and blueberries add nutrients and sweetness. Berries are especially good sources of antioxidants.


Vegetables like spinach, kale, carrots, and tomatoes boost the nutrient content. Dark leafy greens provide vitamins, minerals, and fiber.

Fat-Free Yogurt

Fat-free yogurt adds protein and calcium without the fat and calories of full-fat yogurt. Yogurt also provides probiotics for gut health.

Whey Protein Powder

Whey protein powder increases the protein content to help build lean muscle mass. Whey is absorbed quickly compared to other proteins.

Plant-Based Protein Powder

For non-dairy smoothies, Smoothie King uses pea and rice protein. These vegan protein sources provide amino acids without cholesterol.

Green Tea Extract

Green tea extract adds antioxidants like EGCG that may help boost metabolism and fat burning. It also provides a light caffeine kick.


Flaxseeds add fiber, protein, and omega-3 fatty acids. The fiber aids digestion, and omega-3s reduce inflammation.


Stevia is used as a zero-calorie natural sweetener instead of sugar. It does not raise blood sugar levels.

Nutrition Facts

Here are the nutrition facts for a 20 oz Smoothie King Slim and Trim Strawberry X-Treme smoothie:

Nutrition Facts 20 oz
Calories 190
Total Fat 0.5 g
Saturated Fat 0 g
Trans Fat 0 g
Cholesterol 15 mg
Sodium 100 mg
Total Carbohydrates 30 g
Dietary Fiber 3 g
Sugars 18 g
Protein 20 g
Vitamin A 15%
Vitamin C 200%
Calcium 20%
Iron 6%

As you can see, Slim and Trim smoothies are low in calories, fat, and sugar compared to typical fruit smoothies while still providing protein, fiber, vitamins, and minerals.

Benefits of Slim and Trim Smoothies

Here are some of the advertised benefits of Smoothie King’s Slim and Trim smoothies:

Low Calorie

With around 200 calories or less per 20 oz serving, Slim and Trim smoothies can fit into a reduced calorie diet for weight loss.

High in Protein

The whey or plant-based protein provides 20 grams of protein to help you feel full and build/maintain muscle mass.


Smoothies pack in vitamins, minerals, antioxidants, and other nutrients from fruits, veggies, yogurt, etc. This can help fill in nutritional gaps.

Convenient Source of Produce

Each smoothie has one to two servings of fruits and vegetables, providing an easy way to increase your produce intake compared to juicing.

Low in Sugar

With no added sugar and naturally low-sugar fruits and veggies, Slim and Trim smoothies have less sugar than typical fruit smoothies.


The high water content from the fruits/veggies and yogurt provides good hydration first thing in the morning or after a workout.


Thanks to the blend of protein, fiber, and nutrients, Slim and Trim smoothies can tame hunger and cravings to keep you feeling satisfied for hours.

Potential Downsides

While Smoothie King Slim and Trim smoothies do have some nutritional upside, there are a few potential downsides to consider:

High in Natural Sugars

Even without added sugars, the fruit content makes these smoothies high in fructose and glucose. People with diabetes or insulin resistance may need to be mindful of the carbs.

Can Cause Gas and Bloating

Some people may experience abdominal discomfort from whey protein or cruciferous veggies like kale, broccoli, and cauliflower in large amounts.

Not Very Filling for Some

While smoothies provide protein and fiber, some people may find they do not promote satiety as well as solid meals.

Processed Ingredients

Smoothie King uses pasteurized yogurt and protein powders rather than fresh dairy and whole foods, losing some nutritional value.

Easy to Over-Consume

Drinking calories does not trigger sensations of fullness as effectively as eating solid food. This can lead to excess calorie intake if smoothies are not measured properly.

High in Oxalates

Spinach and other greens used in Smoothie King smoothies are high in oxalates. Consuming high-oxalate foods frequently may increase the risk of kidney stones in susceptible people.

Not Good for Low-Carb or Keto Diets

The carb content from fruits and yogurt make Slim and Trim smoothies unsuitable for very low carb or ketogenic diets.

The Bottom Line

Overall, Smoothie King’s Slim and Trim smoothies can be a nutritious option for a quick breakfast or snack as part of a weight loss diet, providing ample protein, important vitamins and minerals, and antioxidants from whole fruits and vegetables.

However, Slim and Trim smoothies are not necessarily superior to blending up your own smoothie using fresh ingredients like yogurt and greens. And they cannot completely replace eating solid, minimally processed meals.

For optimal health and sustainable weight loss, Smoothie King Slim and Trim smoothies are likely best consumed in moderation as part of an overall diet focused on lean proteins, vegetables, whole fruits, healthy fats, and whole grains.

Frequently Asked Questions

Are Smoothie King slim and trim smoothies healthy?

Slim and Trim smoothies can be a relatively healthy option compared to typical high-calorie fast food breakfasts and snacks. They provide protein, fruits/veggies, vitamins and minerals. However, the health profile depends on the specific smoothie’s recipes and ingredients.

How many calories are in Smoothie King slim and trim smoothies?

Smoothie King Slim and Trim smoothies range from 180-200 calories per 20 oz cup. This is lower than traditional Smoothie King smoothies which can have 300-600 calories.

Do Smoothie King slim and trim smoothies help you lose weight?

Slim and Trim smoothies can help with weight loss because they are low in calories and high in satiating protein and fiber. However, weight loss will ultimately depend on maintaining an overall calorie deficit.

Are Smoothie King slim and trim smoothies good for you?

In moderation, Slim and Trim smoothies can be part of a healthy diet, providing protein, fruits/veggies, vitamins and minerals. However, it’s best to also focus on solid, minimally processed meals for optimal nutrition.

Are there any downsides to Smoothie King slim and trim smoothies?

Potential downsides include gastrointestinal issues from ingredients like raw greens and whey protein, high natural sugar content, and processed ingredients like pasteurized yogurt. Smoothies may also not be as satiating as solid food.

Should I replace meals with Smoothie King slim and trim smoothies?

It’s fine to replace one meal per day with a smoothie, but you should continue eating solid healthy meals for most of your nutrition to promote fullness. Avoid replacing too many meals with smoothies.

How often can I drink Smoothie King slim and trim smoothies?

1-2 Smoothie King Slim and Trim smoothies most days of the week is fine for most healthy adults. Limit to no more than one per day if you have diabetes or kidney issues. As always, speak to your doctor if you have any concerns.

Healthy Smoothie King Smoothie Alternatives

While Smoothie King’s Slim and Trim smoothies can be a handy low-calorie, nutritious option when you’re short on time, making your own smoothies at home gives you more control over the ingredients. Here are some healthy slim smoothie recipes to try:

Berry Protein Smoothie

Blend together 1 cup nonfat Greek yogurt, 1 cup frozen mixed berries, 1/2 frozen banana, 2 handfuls spinach, 1 scoop protein powder, and 1 cup unsweetened almond milk. Top with 1 tbsp chia seeds.

Green Protein Power Smoothie

Mix 1 cup kale or spinach, 1/2 cup pineapple, 1 frozen banana, 1 cup light coconut milk, 1 scoop vanilla protein powder, 1 tbsp ground flaxseed, and ice cubes as needed.

Carrot Cake Smoothie

Process 1/2 cup fat free cottage cheese, 1/2 cup carrot juice, 1/2 frozen banana, 1 handful spinach, 1/4 tsp cinnamon, 1/4 tsp nutmeg, and ice until smooth.

Chocolate Peanut Butter Banana Smoothie

Blend together 1 cup light vanilla soymilk, 1 medium banana, 1 tbsp peanut butter, 1 tbsp cocoa powder, and 1 scoop chocolate protein powder until creamy.


Smoothie King’s Slim and Trim line provides a convenient lower calorie high protein smoothie option for those watching their waistlines. While they make an effort to include ample fruits, veggies, and other wholesome ingredients, it’s unclear if they are superior to making homemade smoothies with fresh ingredients.

For long term health and sustainable weight management, incorporate Smoothie King Slim and Trim smoothies in moderation along with regular balanced meals focused on lean proteins, produce, whole grains, healthy fats and home-prepared foods.

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