8 Protein Powders With Questionable Ingredients: What You Need to Know

Protein powders have become a popular supplement for athletes, fitness enthusiasts, and those looking to increase their protein intake. These powders offer convenience and can help meet nutritional goals. However, not all protein powders are created equal.

Some protein powders contain questionable ingredients that may have negative health impacts. Consumers should be aware of potentially harmful additives, fillers, and artificial ingredients found in certain products. Understanding what to look for on ingredient labels can help people make more informed choices when selecting protein supplements.

1) MusclePharm Combat Protein Powder

A group of protein powder containers with questionable ingredients scattered on a laboratory table

MusclePharm Combat Protein Powder is a popular supplement among fitness enthusiasts. It boasts a blend of different protein sources, including whey protein concentrate, milk protein concentrate, whey protein isolate, whey protein hydrolysate, and egg albumin.

The product claims to offer 25 grams of protein per serving, aiming to support muscle growth and recovery. It also contains branched-chain amino acids (BCAAs) and other ingredients like inulin and lactase, which are intended to promote gut health.

Despite its potential benefits, some consumers may have concerns about certain ingredients in the formula. The powder contains artificial flavors and sucralose, a synthetic sweetener. These additives might not align with preferences for more natural protein supplements.

Additionally, the presence of multiple protein sources could be a drawback for individuals with specific dietary restrictions or sensitivities. Those with lactose intolerance may need to exercise caution due to the milk-based proteins in the blend.

While MusclePharm Combat Protein Powder offers a high protein content, users should carefully consider its ingredient profile. Consulting with a healthcare professional can help determine if this supplement aligns with individual health goals and dietary needs.

2) Body Fortress Super Advanced Whey Protein

A chaotic laboratory with various protein powder containers, surrounded by questionable ingredients and chemical equipment

Body Fortress Super Advanced Whey Protein Powder offers a substantial 30 grams of protein per scoop. This high protein content makes it appealing for muscle building and recovery.

The product is relatively affordable, costing around $23 for a 1.78-pound container on Amazon. It has garnered over 42,000 reviews with an average rating of 4.5 stars.

Despite its popularity, this protein powder contains preservatives, fillers, and artificial ingredients commonly found in ultraprocessed foods. These additives have been linked to health concerns such as obesity, heart disease, and gastrointestinal issues.

The calorie content is higher than many competing whey protein powders at 200 calories per serving. This may be a consideration for those closely monitoring their calorie intake.

Body Fortress has reformulated this product, which has received mixed reactions. Some users report that the new formula tastes worse than the previous version.

The powder includes added BCAAs and an immune support blend with vitamins C, D, and zinc. However, the dosage of these immune-supporting nutrients is relatively low compared to dedicated supplements.

3) Six Star Whey Protein Plus

A cluttered laboratory with various protein powder containers, some labeled "questionable ingredients."

Six Star Whey Protein Plus is a popular protein powder marketed for muscle building and recovery. It contains a blend of whey protein concentrate, isolate, and hydrolyzed whey protein, providing 32 grams of protein per serving.

The product claims to be 70% better than regular whey alone. It also includes added creatine, a compound known to support muscle growth and performance.

Despite its high protein content, Six Star Whey Protein Plus contains several questionable ingredients. These include artificial flavors, acesulfame potassium, and sucralose, which are synthetic sweeteners.

Some users report digestive issues such as bloating and gas after consuming this protein powder. These side effects may be due to the whey concentrate or artificial additives present in the formula.

Long-term consumption of processed protein powders like Six Star Whey Protein Plus may potentially alter gut microbiota and affect glucose tolerance. While protein supplementation can support muscle growth, the inclusion of artificial ingredients raises concerns about its overall health impact.

4) GNC Pro Performance 100% Whey Protein

GNC Pro Performance 100% Whey Protein is a popular supplement among fitness enthusiasts. This product contains a blend of whey protein concentrate and whey protein isolate, which are known for their high biological value.

The protein powder provides 24 grams of protein per serving, along with 6 grams of carbohydrates and 2 grams of fat. It comes in various flavors, including chocolate supreme, which many users find enjoyable.

While GNC promotes this product as a high-quality protein source, some concerns exist regarding its ingredients. The powder contains artificial flavors and sucralose, an artificial sweetener that some consumers prefer to avoid.

Additionally, the product includes soy lecithin as an emulsifier. Though generally recognized as safe, some individuals may have sensitivities to soy-based ingredients.

It’s worth noting that GNC Pro Performance 100% Whey Protein undergoes banned substance testing, which may appeal to competitive athletes. However, consumers should carefully review the ingredient list to ensure it aligns with their dietary preferences and health goals.

5) EAS 100% Pure Whey Protein

A variety of protein powder containers surrounded by question marks and suspicious-looking ingredients

EAS 100% Pure Whey Protein Powder offers 30 grams of protein per serving, which is a substantial amount for muscle building. The product contains whey protein concentrate as its primary ingredient.

Despite its high protein content, this powder includes several artificial additives. The ingredient list features artificial flavors, acesulfame potassium, and sucralose as sweeteners.

The formula also contains soy lecithin, carrageenan, and xanthan gum as thickeners and stabilizers. These ingredients may be concerning for individuals seeking a more natural protein supplement.

Each serving of EAS 100% Pure Whey Protein provides 170 calories. This relatively low calorie count may appeal to those watching their caloric intake while still aiming for high protein consumption.

The powder is available in vanilla flavor and comes in a 2-pound container with 21 servings. At approximately 2.30 cents per gram of protein, it falls within the mid-range price point for whey protein supplements.

While EAS 100% Pure Whey Protein delivers a high protein content, consumers should be aware of its artificial ingredients and additives when considering this product for their nutritional needs.

6) Nature’s Best Perfect Zero Carb Isopure

A serene, lush forest with vibrant greenery and a clear, flowing stream, surrounded by towering mountains and a bright blue sky

Nature’s Best Perfect Zero Carb Isopure is a popular protein powder marketed for its high protein content and lack of carbohydrates. This product contains 50 grams of whey protein isolate per serving, which is obtained through ion exchange processing.

The manufacturer claims their product is lactose-free, fat-free, and glutamine-enriched. They also state that impurities typically found in whey proteins have been removed to provide a pure supplement.

Isopure offers various flavors and formulations, including ready-to-drink beverages. Their protein powders are designed to support muscle growth and maintenance, particularly for those following low-carb or ketogenic diets.

While the product boasts a high protein content, some consumers may question the use of artificial flavors and sweeteners in certain varieties. The extensive processing required to achieve zero carbs might also raise concerns about nutrient retention.

It’s worth noting that Isopure includes 23 vitamins and minerals in their formula. This addition aims to provide a more comprehensive nutritional profile beyond just protein supplementation.

7) BulkSupplements Casein Protein Powder

A collection of protein powder containers with questionable ingredients scattered on a table, with BulkSupplements Casein Protein Powder prominently displayed

BulkSupplements offers a casein protein powder that claims to support muscle recovery and growth. The product is marketed as gluten-free and soy-free, with each serving containing 30 grams of protein.

Casein protein is known for its slow-digesting properties, which can provide a sustained release of amino acids over time. This characteristic may be beneficial for muscle protein synthesis and recovery.

Some users might experience gastrointestinal discomfort when consuming casein protein powder. This can include bloating, gas, and constipation due to the gel-like substance formed in the stomach during digestion.

BulkSupplements sells their casein protein powder in various sizes, including 250-gram and 1-kilogram options. The company emphasizes the product’s ability to integrate easily with other supplements or beverages.

While casein protein can support muscle growth, it’s important to note that individual results may vary. Users should consider potential side effects and consult with a healthcare professional before adding this supplement to their routine.

8) Dymatize Nutrition ISO100

A laboratory setting with various protein powder containers, some with questionable ingredients, and scientific equipment

Dymatize Nutrition ISO100 is a popular protein powder marketed as a high-quality supplement for muscle recovery and growth. The product claims to be filtered to remove excess lactose, carbs, fat, and sugar.

ISO100 contains hydrolyzed whey protein isolate and whey protein isolate as its main ingredients. These protein sources are generally considered fast-absorbing and easily digestible.

The product also includes cocoa powder processed with alkali, natural and artificial flavors, salt, and sweeteners like sucralose and stevia. Some consumers may have concerns about the use of artificial additives.

While ISO100 is generally well-regarded, it’s important to note that all supplements carry potential risks. Some users may experience digestive discomfort or allergic reactions to certain ingredients.

As with any protein powder, it’s advisable to consult a healthcare professional before incorporating ISO100 into your diet. Proper dosage, adequate hydration, and a balanced diet are essential for minimizing potential side effects.

Understanding Protein Powders

Protein powders offer a convenient way to boost protein intake, but their ingredients and quality can vary widely. Consumers should be aware of the different protein sources, potential benefits, and possible risks associated with these supplements.

Common Protein Sources

Whey protein is a popular choice derived from milk. It’s fast-absorbing and contains all essential amino acids. Casein, another milk-based protein, digests more slowly. Plant-based options include soy, pea, rice, and hemp proteins.

Some brands combine multiple sources for a complete amino acid profile. Egg white protein is another animal-based option, known for its high bioavailability.

Collagen peptides have gained popularity for potential skin and joint benefits, though they’re not a complete protein.

Benefits and Risks

Protein powders can support muscle growth, aid recovery after exercise, and help meet daily protein needs. They’re convenient for busy lifestyles and may assist in weight management by promoting satiety.

However, some products contain questionable additives. Artificial sweeteners, flavors, and preservatives are common. Heavy metal contamination has been reported in certain brands.

Excessive protein intake may strain kidneys in susceptible individuals. Some people experience digestive discomfort, especially with dairy-based powders.

Quality matters. Third-party testing can ensure purity and accurate labeling. Whole food protein sources are generally preferable, but powders can be a useful supplement when used judiciously.

Identifying Questionable Ingredients

A table filled with various protein powder containers, surrounded by scattered ingredients like artificial sweeteners, fillers, and preservatives

Scrutinizing protein powder labels reveals several potentially concerning additives. These ingredients may detract from the nutritional benefits or introduce unwanted effects. Careful examination helps consumers make informed choices about their supplements.

Artificial Additives

Protein powders often contain artificial sweeteners, flavors, and colors to enhance taste and appearance. Sucralose, acesulfame potassium, and aspartame are common synthetic sweeteners. Artificial flavors like “natural and artificial flavors” mask unpleasant tastes. FD&C dyes provide vibrant hues but offer no nutritional value.

These additives may cause digestive issues in some individuals. Long-term health effects remain uncertain. Some studies link artificial sweeteners to altered gut bacteria and metabolic changes. Consumers with sensitivities should be particularly cautious.

Fillers and Thickeners

Many protein powders include fillers and thickeners to improve texture and increase volume. Common additives include:

  • Maltodextrin
  • Xanthan gum
  • Cellulose gum
  • Carrageenan

These ingredients can cause bloating and gas in sensitive individuals. They add bulk but provide little nutritional benefit. Some fillers like maltodextrin may spike blood sugar levels.

Carrageenan has been linked to inflammation in some studies. While generally recognized as safe, concerns persist about its long-term effects. Consumers should weigh the potential risks against any benefits these additives provide.