Our ReviewSixStarCasein Protein +

In addition to the protein blend, SixStar Casein Protein + includes several other ingredients. Maltodextrin has been added as a carbohydrate source. However, we would question its suitability for use in a protein powder that is generally used before bed. We will talk about that more later.

Cocoa gives the product its chocolate flavor. The product also contains natural and artificial flavors, along with a gum blend (cellulose gum, xanthan gum, carrageenan) that helps with texture and mixability. The inclusion of artificial sweeteners like acesulfame potassium and sucralose here is also a common practice to keep the calorie count. However, some may prefer to avoid artificial sweeteners due to personal health concerns or dietary preferences.

Soy or sunflower lecithin is included to aid in the product's solubility and consistency when mixed with liquids. While generally considered safe, soy lecithin might be a point of concern for those with soy allergies.

The inclusion of micellar casein is a significant advantage, as it is considered one of the best forms of casein protein. Micellar casein forms a gel-like substance in the stomach, leading to a slow release of amino acids into the bloodstream. This slow digestion rate is beneficial for preventing muscle breakdown and promoting muscle protein synthesis throughout the night, which aligns well with the product’s marketed purpose.

Milk protein isolate in the blend provides a mix of both casein and whey proteins. While whey is fast-digesting and rapidly increases amino acid levels in the blood, casein's slow-digesting nature complements it by offering prolonged amino acid delivery. This combination ensures that the muscles receive immediate as well as extended protein support, enhancing overall effectiveness for muscle recovery and growth.

The product’s low fat content, at just 0.5 grams per serving, is commendable. However, the carbohydrate content, primarily from maltodextrin, is relatively high at 9 grams per serving. While maltodextrin can be beneficial in a whey protein product post-workout for replenishing glycogen stores, its presence in a casein protein meant for overnight use is surprising. The primary purpose of casein is to deliver a slow, steady release of amino acids to prevent muscle catabolism during long periods without food. Adding carbohydrates like maltodextrin could lead to the storage of unused carbs as fat if the energy is not expended.

However, there could be some rationale behind this formulation. For instance, if used after an evening workout, this product could be beneficial. The moderate carbohydrate content from maltodextrin can help replenish glycogen stores post-exercise, while the milk protein isolate, which includes whey, provides an immediate supply of amino acids during the anabolic phase after your workout. This combination can support both immediate recovery needs and sustained muscle repair overnight.

However, the product's value is nuanced by its inclusion of maltodextrin, which contributes to the 9 grams of carbohydrates per serving. While maltodextrin can aid in glycogen replenishment post-workout, its necessity in a nighttime protein supplement is questionable. For those who do not utilize these carbs, there is a risk of them being stored as fat, which diminishes the product's value compared to other casein proteins with lower carbohydrate content, in our opinion.

Despite this, SixStar Casein Protein + excels in mixability and taste, making it a pleasant option for nightly consumption. The chocolate flavor is rich and enjoyable, and the powder blends smoothly with both water and milk. This user-friendly aspect adds to its appeal, especially for those who prioritize flavor and ease of use.