6 Best Complete Protein Powder | Not All Proteins Are Equal

Check Price on Amazon

The rare two-in-one that targets your muscles and your microbiome at once.

Premier Protein steps out of the standard protein aisle with a whey powder that also delivers 7g of prebiotic fiber (a type of fiber that feeds good gut bacteria) per serving — that is 25% of your daily fiber value in one shake. You get 25g of whey protein to support muscle growth and fullness, plus a three-fiber blend designed to nourish good gut bacteria, a combo most protein powders simply skip.

This is a 2-in-1 approach: whey for your muscles, prebiotic fiber for your gut. Owners mention that it mixes easily into water or milk and that the chocolate flavor is genuinely palatable, which earned it an American Masters of Taste Gold Medal. At only 1.65 pounds per tub, it is a lighter container, but the 17 servings deliver a complete protein and fiber boost without added sugar.

Compared to the Optimum Nutrition Gold Standard which offers 5.5g BCAAs but zero fiber, this pick gives you 7g of prebiotic fiber for gut health — a dimension the pure whey option leaves out entirely.

Check Price on Amazon

Organic peas, brown rice, and chia seeds meet your macros without the dairy baggage.

Each two-scoop serving delivers 21g of organic plant-based protein with all nine essential amino acids (the building blocks for muscle and body function your body cannot make on its own), backed by 6g of prebiotic fiber for gut support. Orgain uses a blend of organic peas, brown rice, and chia seeds — not soy — which makes it a cleaner option for those avoiding common allergens. It is USDA Organic, certified plant-based, kosher, and contains no erythritol (a sugar alcohol), artificial flavors, or preservatives.

You can mix it with water, almond milk, or oat milk, or blend it into smoothies and baked goods. Buyers consistently mention it mixes reasonably well compared to other plant powders, although some note the texture is slightly thicker than whey. With 0g of added sugar and 150 calories per serving, it works as a meal replacement or a post-workout shake for plant-based athletes. At 2.03 pounds, you get a full 20 servings in one tub.

While the Optimum Nutrition whey delivers 24g of protein, this plant-based pick gives you 21g plus 6g of prebiotic fiber — a trade-off of 3g less protein for significant digestive support.

Check Price on Amazon

An all-in-one organic meal replacement that dissolves fast and keeps cravings in check.

Vega packs 20g of organic pea protein into a formula designed to replace a meal — not just supplement one. It includes superfoods (nutrient-dense ingredients like greens and berries), fiber, and probiotics (live beneficial bacteria) to support full-body health, with the specific aim of crushing cravings and powering mornings without the heavy bloating some dairy proteins cause. The Coconut Almond flavor offers a cleaner taste profile compared to typical chocolate or vanilla options.

What makes this a true meal replacement is the all-in-one blend: you get protein, superfoods, fiber, and probiotics in a single scoop. Customers note it mixes quickly with just a shaker, making it easy to run out the door. At 1.52 pounds, the tub is the lightest in this lineup at 18 servings, but it is also the most complete plant-based nutritional package per scoop outside of a full blender breakfast.

By weight, the Vega tub is 1.52 pounds versus the Organifi tub at 2.5 pounds — nearly 64% less powder by tub weight, so you are paying for a more concentrated, superfood-rich blend per serving rather than bulk.

Check Price on Amazon

Venus Williams created a plant-based powerhouse — 30g protein and 100+ superfoods per serving.

This is the highest protein count among the plant-based options in this guide, hitting 30g per serving from a blend of pea protein and brown rice protein. It comes with 10g of fiber for satiety and digestive wellness, plus over 100 superfoods that include ingredients like Ashwagandha (an herb the brand includes to support brain power and stress management). Happy Viking is gluten-free, non-GMO, and free from dairy, soy, and artificial additives.

The brand says the formula supports muscle repair, weight reduction, and carbohydrate craving control as part of a healthy diet. Each tub contains 15 meals, and the powder works well when mixed with any type of milk for a creamy texture. Reviewers point out that the chocolate flavor is one of the better-tasting plant proteins on the market, though some mention the 1.81-pound tub runs out fairly fast given the 30g scoop size.

With 30g of plant protein, this significantly overshoots the Vega option at 20g protein — a full 50% more protein per serving, making it the clear leader in this comparison for pure plant-based protein density.

Check Price on Amazon

A 2-in-1 protein and multivitamin shake with digestive enzymes for easier breakdown.

Organifi markets this as a protein and multivitamin in one glass, with a formula the brand says is designed to help you feel full for longer. It is an organic, vegan plant-based powder with digestive enzymes — a feature that helps your body break down the protein more efficiently, which is a smart addition if plant proteins sometimes leave you feeling heavy. There is no soy, dairy, or gluten in the blend.

Each scoop mixes into 8 oz of water, milk, or any milk alternative, and the brand positions it as a tool to resist less nutritious food choices throughout the day. The 2.5-pound tub provides a 30-day supply, making it one of the larger containers in this list by weight — noticeably more product than the Vega tub at 1.52 pounds. Buyers appreciate the clean ingredient label and the vanilla flavor, though some note the protein content per serving is not explicitly listed in grams on the main product description, which makes it harder to compare directly against the 24g or 30g options.

The Organifi tub is 2.5 pounds compared to the Happy Viking tub at 1.81 pounds, giving you 0.69 pounds more powder per purchase — a better value if you prioritize volume over per-serving protein density.