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COREFITLAB's Naturaltein YES Protein Review

Naturaltein · Reviewed by COREFITLAB · Published 2026-09-01

Rating 4.5/5Source quality 75/100Evidence 15Claims 9Q&A 5Pros 8Cons 2

Based on a review by COREFITLAB (accessed 2026-09-01).

What they actually found

  • Loved — High protein content (25g per 35g serving, ~72%)
  • Annoyed by — The side seal of the packaging is very sharp and can cause injury when opening

Based on this review alone: buy it if you care about high protein content (25g per 35g serving, ~72%) — just accept the side seal of the packaging is very sharp and can cause injury when opening.

This source's evidence 🎬

Source verdict

The reviewer concluded that the Coffee flavor of Naturaltein YES Protein was the superior choice, giving it a 9 out of 10 and describing its taste as akin to cold coffee. Mango scored 8.5/10, and Kesar Badam scored 7/10, while the Chocolate Fantasy taste was not explicitly rated after tasting.

About this source

This review unboxes and provides a detailed taste comparison of four Naturaltein YES Protein flavors: Kesar Badam, Chocolate Fantasy, Coffee, and Mango. It also covers the product's nutritional information, inclusion of natural digestive enzymes, and natural sweeteners. The reviewer also performs mixability demonstrations.

Review notes

Naturaltein YES Protein is a top-tier protein powder due to its high protein percentage and natural ingredients, with the coffee flavor standing out as the best. Each 35g serving delivers 25g of protein and includes natural digestive enzymes like bromelain and papain, aiding digestion. However, the packaging's sharp side seal poses a minor safety concern during opening, as noted by the reviewer's small injury. If you prioritize a high-quality, naturally sweetened protein with excellent digestibility, this product is worth considering. If you are sensitive to sharp packaging edges, exercise caution during unboxing.

What the reviewer liked

  • High protein content (25g per 35g serving, ~72%)
  • Contains natural digestive enzymes (bromelain, papain, alpha amylase, protease, cellulase, lactase, lipase)
  • Sweetened naturally with monk fruit extract and stevia
  • Very low sugar content (0.42g per serving)
  • Suitable for lactose-intolerant and diabetic individuals
  • Excellent mixability, dissolving completely in 10-15 seconds
  • Coffee flavor has a great taste (rated 9/10)
  • Overall high product quality and ingredient sourcing

What the reviewer criticised

  • The side seal of the packaging is very sharp and can cause injury when opening
  • Some flavors (Kesar Badam, Mango) are less appealing than the coffee flavor (7/10 and 8.5/10 respectively)

Structured claims

Naturaltein YES Protein offers consistent protein percentage and core ingredients across most of its various flavors, though specific taste profiles and some minor ingredient variations exist.

reviewer_claimmoderate

A 35-gram serving of Naturaltein YES Protein provides 25 grams of protein, translating to approximately 72% protein content.

specification_claimstrong

Naturaltein YES Protein contains a low 4.82 grams of carbohydrates and a negligible 0.42 grams of sugar per serving.

specification_claimstrong

The protein powder incorporates natural digestive enzymes like Bromelain and Papain (or a blend including Lactase in some flavors) to aid digestion, suitable for those who find protein difficult to digest.

specification_claimstrong

Naturaltein YES Protein is sweetened with natural sources such as Monk Fruit Extract, Steviol, and Thaumatin, avoiding artificial sweeteners.

specification_claimstrong

The Naturaltein YES Protein powder is very fine, which contributes to good solubility and easy mixing, requiring only 10-15 seconds of shaking.

reviewer_claimmoderate

Among the four flavors tested, the Coffee flavor was rated as the best, offering a taste akin to cold coffee and earning a score of 9 out of 10.

reviewer_claimstrong

The Kesar Badam flavor provides an almond taste with a saffron aroma and a slight coconut water aftertaste, receiving a rating of 7 out of 10.

reviewer_claimmoderate

The Mango flavor is a good option, receiving a score of 8.5 out of 10, though ultimately ranked below Coffee by the reviewer.

reviewer_claimmoderate

Evidence items

Consistent Ingredients and Protein Percentage Across Flavors

reviewer_claimneutralt=0:17–0:22

The reviewer states that all four Naturaltein YES Protein flavors share the same core ingredients and protein percentage, but their taste varies significantly.

Protein Content per Serving

specification_claimneutralt=0:31–0:38

The reviewer states that each 35-gram serving of Naturaltein YES Protein provides 25 grams of protein, indicating approximately 72% protein content.

Carbohydrate and Sugar Content

specification_claimneutralt=0:38–0:44

Each serving contains approximately 4.82 grams of carbohydrates and 0.42 grams of total sugar, which the reviewer considers negligible.

Inclusion of Natural Digestive Enzymes

specification_claimpositivet=0:49–1:04

The product contains natural digestive enzymes, Bromelain and Papain, which are derived from natural sources, making it suitable for those who struggle to digest protein.

Use of Natural Sweeteners

specification_claimpositivet=1:05–1:19

The reviewer highlights that the protein uses natural sweeteners like Monk Fruit Extract and Steviol (though he initially misidentifies Thaumatin), differentiating it from artificial sweeteners.

Packaging and Seal Inspection

visual_inspectionneutralt=1:24–1:33

The reviewer unboxes the protein powder, showing a white seal inside the packaging, which he then opens.

Disclosure of Product Acquisition Method

reviewer_claimneutralt=1:38–1:53

The reviewer transparently states that two boxes (Chocolate Fantasy and Mango) were purchased for lab testing, while three other boxes were sent by the company. He intends to buy the company-sent ones for future lab tests.

Powder Fineness and Mixing Demo (Kesar Badam)

hands_on_demopositivet=2:27–2:48

The reviewer demonstrates the Kesar Badam flavor, noting its fine powder consistency that spreads in the air. He mixes it with water, shaking for 10-15 seconds.

Powder Mixing Demo (Chocolate Fantasy)

hands_on_demoneutralt=3:56–4:03

The reviewer mixes the Chocolate Fantasy flavor, demonstrating that 10-15 seconds of shaking is sufficient for proper mixing.

Flavor-Specific Ingredient Variations

specification_claimneutralt=3:20–3:39

The Chocolate Fantasy flavor uses Steviol and Thaumatin as sweeteners instead of Monk Fruit, and its digestive enzyme blend includes Alpha Amylase, Natural Protease, Cellulase, Lactase, and Lipase, differing from the Bromelain and Papain in other flavors.

Kesar Badam Flavor Taste Test and Rating

hands_on_demoneutralt=5:58–6:10

The reviewer tastes the Kesar Badam flavor, noting a good taste of almond, aroma of saffron, and a slight coconut water aftertaste. He rates it 7 out of 10.

Coffee Flavor Taste Test and Rating

hands_on_demopositivet=6:11–6:16

The reviewer tastes the Coffee flavor, finding it better than Kesar Badam and initially rating it 8 out of 10.

Chocolate Fantasy Texture Comparison

visual_inspectionneutralt=4:04–4:10

After mixing the Chocolate Fantasy, the reviewer observes that its texture is almost identical to the Coffee flavor.

Mango Flavor Taste Test and Comparison

hands_on_demomixedt=6:17–6:23

The reviewer tastes Mango, giving it an 8.5/10, but then re-tastes Coffee and concludes Coffee is better, changing Mango's relative ranking in his preference.

Overall Best Flavor Verdict

reviewer_claimpositivet=6:24–6:30

The reviewer definitively states that Coffee is the winner and the best flavor, recommending it for its cold coffee-like experience and giving it a final score of 9/10.

Quick answers

  • Is Naturaltein YES Protein suitable for people with lactose intolerance or diabetes? The reviewer explicitly states that the product is suitable for lactose-intolerant individuals because it contains natural digestive enzymes like Bromelain and Papain (or a varied blend in some flavors).
  • What is the protein content per serving of Naturaltein YES Protein? The reviewer states that a standard 35-gram serving of Naturaltein YES Protein provides 25 grams of protein, which translates to approximately 72% protein content by weight.
  • Which flavor of Naturaltein YES Protein tastes the best? After tasting and comparing four different flavors (Kesar Badam, Chocolate Fantasy, Coffee, and Mango), the reviewer concludes that the Coffee flavor is the winner, rating it 9 out of 10.
  • How well does Naturaltein YES Protein mix? The reviewer demonstrates mixing the protein powder, noting its very fine texture that easily disperses and even spreads in the air.

Buyer questions answered

Is Naturaltein YES Protein suitable for people with lactose intolerance or diabetes?

The reviewer explicitly states that the product is suitable for lactose-intolerant individuals because it contains natural digestive enzymes like Bromelain and Papain (or a varied blend in some flavors). It is also suitable for diabetics as it uses natural sweeteners like Monk Fruit Extract and Steviol, with negligible sugar content (0.42g per serving).

What is the protein content per serving of Naturaltein YES Protein?

The reviewer states that a standard 35-gram serving of Naturaltein YES Protein provides 25 grams of protein, which translates to approximately 72% protein content by weight.

Which flavor of Naturaltein YES Protein tastes the best?

After tasting and comparing four different flavors (Kesar Badam, Chocolate Fantasy, Coffee, and Mango), the reviewer concludes that the Coffee flavor is the winner, rating it 9 out of 10. He describes it as tasting like cold coffee and highly recommends trying it.

How well does Naturaltein YES Protein mix?

The reviewer demonstrates mixing the protein powder, noting its very fine texture that easily disperses and even spreads in the air. He suggests that 10-15 seconds of shaking is sufficient for proper mixing in water, indicating good solubility.

Are the ingredients consistent across all Naturaltein YES Protein flavors?

The reviewer initially states core ingredients and protein percentage are the same across flavors. However, he later points out that the Chocolate Fantasy flavor specifically uses a different blend of natural sweeteners (Steviol and Thaumatin instead of Monk Fruit) and a different array of digestive enzymes compared to other flavors, indicating some ingredient variations.

Specs mentioned in this review

Protein Content per Serving
The reviewer states that each 35-gram serving of Naturaltein YES Protein provides 25 grams of protein, indicating approximately 72% protein content
Carbohydrate and Sugar Content
Each serving contains approximately 4
Inclusion of Natural Digestive Enzymes
The product contains natural digestive enzymes, Bromelain and Papain, which are derived from natural sources, making it suitable for those who struggle to digest protein
Use of Natural Sweeteners
The reviewer highlights that the protein uses natural sweeteners like Monk Fruit Extract and Steviol (though he initially misidentifies Thaumatin), differentiating it from artificial sweeteners
Flavor-Specific Ingredient Variations
The Chocolate Fantasy flavor uses Steviol and Thaumatin as sweeteners instead of Monk Fruit, and its digestive enzyme blend includes Alpha Amylase, Natural Protease, Cellulase, Lactase, and Lipase, differing from the Bromelain and Papain in other flavors

Not covered in depth by this source

  • Not covered: Fit & Sizing
  • Not covered: Ride Feel
  • Not covered: Durability
  • Not covered: Stability
  • Not covered: Traction
  • Not covered: Value
  • Not covered: Breathability

Why this source is included

75/100 source quality

  • • Independent of the brand
  • ✓ Hands-on demonstration
  • ✓ Specific testing or measurements
  • ✓ Clear sponsorship / relationship disclosure

Transcript summary

COREFITLAB presents a review of Naturaltein YES Protein, focusing on four distinct flavors: Kesar Badam, Chocolate Fantasy, Coffee, and Mango. The video features an unboxing, discussion of the product's nutritional profile including protein content, low carbs, and natural digestive enzymes (Bromelain, Papain, and a blend for Chocolate Fantasy). The reviewer demonstrates mixability and conducts a taste test for each flavor, ultimately ranking them. The protein uses natural sweeteners like Monk Fruit, Steviol, and Thaumatin. The reviewer also highlights its suitability for those with lactose intolerance or diabetes.

Full transcript is not redistributed here to respect the original creator’s rights.

Deep dive 🤓

About this page

This page converts COREFITLAB's review of the Naturaltein Naturaltein YES Protein into structured evidence — timestamped claims, pros & cons, and buyer questions. It is not the original review and does not replace watching or reading the full source.

Sponsorship & disclosure

Brand relationship disclosed as: affiliate

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