Walk down the supplement aisle at any Walmart Supercenter and these two tubs sit shoulder-to-shoulder: red Body Fortress, black-and-gold Six Star, each promising 30 g of protein at supermarket prices. We tracked every retailer to see which one actually wins for the everyday gym-goer.
Six Star launched in 2005 as the value-tier sibling to MuscleTech. Both brands sit under the Iovate Health Sciences umbrella, with Six Star getting the simpler formulations and the Walmart-first distribution. The brand has stayed remarkably consistent: 100% Whey Plus is still the flagship, still 30 g of protein per scoop, still sold in the same red-and-black tub design that has been on shelves for over a decade. Six Star also makes pre-workout (Test Booster) and creatine monohydrate, but the protein tub is the volume driver.
Body Fortress launched in 2001 and was acquired by Iovate Health Sciences from US Nutrition / Glanbia in the mid-2010s, which is why both Body Fortress and Six Star are now sister brands. The product line is even tighter than Six Star: Super Advanced Whey, Super Advanced Isolate, Mass Gainer and Casein. Body Fortress leans even harder into the budget positioning, with a 5 lb chocolate tub frequently dropping under $30 during Walmart rollbacks.
| Metric | Six Star 100% Whey Plus (4 lb) | Body Fortress Super Advanced Whey (5 lb) |
|---|---|---|
| Tub size | 1,810 g / 4 lb | 2,268 g / 5 lb |
| Servings per tub | 54 | 50 |
| Protein per serving | 30 g | 30 g |
| Serving size | 33 g | 45 g |
| Total protein in tub | 1,620 g | 1,500 g |
| Lowest tracked price | $34.99 (Walmart) | $32.99 (Walmart) |
| Cost per serving | $0.65 | $0.66 |
| Cost per gram of protein | $0.022 | $0.022 |
| Formula | Whey blend (isolate + concentrate + peptides) | Whey concentrate base |
| Best flavor | Triple Chocolate, French Vanilla Cream | Chocolate, Vanilla, Cookies & Cream |
| Retailer reach | Walmart, Amazon, GNC, Target | Walmart, Amazon |
The math here is so close it is basically noise. Body Fortress Super Advanced Whey 5 lb at $32.99 delivers 1,500 g of protein. Six Star 100% Whey Plus 4 lb at $34.99 delivers 1,620 g of protein. Both work out to roughly $0.022 per gram of protein. In any given week, a Walmart rollback can swing the answer either direction.
One subtle macro difference: Six Star uses a slightly smaller scoop (33 g) to deliver 30 g of protein, which means more of the scoop is actual protein. Body Fortress uses a larger 45 g scoop with the same 30 g protein claim, leaving more room for filler ingredients (maltodextrin, lecithin, gums). Six Star's higher protein-to-scoop ratio is the better engineering on paper.
Six Star Triple Chocolate is the strongest flavor in the matchup. The cocoa is heavier, the sweetener system is more balanced and the finish is cleaner than Body Fortress. French Vanilla Cream is also reliable; Strawberry Smoothie and Cookies & Cream are competent if you like sweeter shakes.
Body Fortress Chocolate is competent but thinner than Six Star, with a slight artificial sweetener bite. Strawberry is the weakest flavor in the entire matchup. Cookies & Cream is the best Body Fortress pick. Mixability is essentially identical between the two; both contain soy lecithin and both mix cleanly in a wire-ball shaker with water or milk.
If you live within 15 minutes of a Walmart Supercenter and want the cheapest, largest 30 g protein tub on the shelf, buy Body Fortress Super Advanced Whey 5 lb. You pay $32.99, get 1,500 g of protein, and you can grab it on the same run as the groceries. Stick with Chocolate or Cookies & Cream; skip the Strawberry.
If you want slightly cleaner macros, a better flavor experience and access to GNC's BOGO promotions, buy Six Star 100% Whey Plus 4 lb. You pay $34.99 for 1,620 g of protein in a tub that mixes the same and tastes noticeably better.
If you cannot decide: both tubs cost under $35 individually. Grab one 5 lb Body Fortress for your gym bag and one 2 lb Six Star for your kitchen. Combined cost roughly $60 and you cover every flavor preference.
Both Six Star and Body Fortress are made in the same Iovate Health Sciences facilities as MuscleTech NitroTech and MuscleTech Phase8. The base formulas are simpler and the ingredient costs are lower (less whey isolate, more whey concentrate, more amino acid spiking), but the manufacturing standards and quality control are the same. Think of Six Star and Body Fortress as MuscleTech-quality manufacturing applied to a value-tier formulation.
Independent lab testing (notably the Labdoor 2018-2022 protein rankings) has historically called out budget brands for "amino acid spiking" where some of the labeled protein content comes from added free amino acids (taurine, glycine, creatine) rather than complete whey. Both Six Star and Body Fortress have appeared on those lists. Labdoor 2024 retests show both brands have tightened their actual whey content but still use modest amino acid additions. The protein label is technically accurate.
Heavy metals (lead, cadmium, arsenic) are present in trace amounts in nearly all plant and animal protein powders sourced from US dairy. Both Six Star and Body Fortress have tested within FDA acceptable limits in independent testing. If you are extremely conservative on heavy metals, step up to a brand with Clean Label Project certification like Ascent or Promix.
Six Star 100% Whey Plus is labeled gluten-free across all flavors. Body Fortress Super Advanced Whey is also labeled gluten-free but is not third-party certified. Both are manufactured in facilities that also process products containing wheat, so cross-contact is possible. If you have celiac, look for certified gluten-free brands.
Body Fortress launched in 2001 and has been a Walmart staple for over two decades. Six Star launched in 2005 as a value-tier MuscleTech spin-off. Both have outlasted dozens of competitors and are unlikely to be discontinued anytime soon. Both formulas have had minor refinements but the core 30 g whey blend positioning is unchanged.