Huel and Soylent are the two most prominent "complete meal replacement" brands in the market. Both deliver ~400 calories per serving. Both are designed to fully replace meals. But the ingredient quality gap between them is enormous. Here's the complete breakdown.
The Quick Comparison
| Category | Huel | Soylent |
|---|---|---|
| Price/Serving | $2.12 | $3.25 |
| Calories | 400 | 400 |
| Protein | 40g | 20g |
| Fiber | 7g (oats, flax) | 3g |
| Primary Carb | Oats (GI ~55) | Maltodextrin (GI 85-105) ⚠️ |
| Fats | Flaxseed, coconut | Canola + Sunflower oil ⚠️ |
| Folate | L-Methylfolate ✅ | Folic acid ⚠️ |
| Vitamin K2 | MK-7 ✅ | Not included |
| Vitamin D | D3 (100% DV) | D2 (inferior form) |
| Seed Oils | None | Two (canola + sunflower) |
| Score | 7.2/10 | 5.5/10 |
Same Calories, Different Universes
Both products deliver 400 calories, but how they build those calories couldn't be more different:
Huel's 400 calories come from: Oats (slow-release carbs, GI ~55), pea protein, brown rice protein, flaxseed (omega-3s), and coconut. Whole food sources with functional nutrition beyond macros.
Soylent's 400 calories come from: Maltodextrin (GI 85-105, higher than sugar), soy protein isolate (likely hexane-extracted), canola oil, and sunflower oil. Processed, cost-optimized ingredients.
Protein: 40g vs 20g
Huel delivers double the protein at a lower price. 40g of plant-based protein from pea and rice vs 20g from soy protein isolate. Huel's protein sources don't carry the hexane-extraction concerns of Soylent's soy isolate.
The Carbohydrate Problem
This is the single biggest differentiator. Huel uses oats as its primary carb source — a whole grain with a glycemic index around 55, delivering sustained energy with beta-glucan fiber for heart and gut health.
Soylent uses maltodextrin — a processed starch with a glycemic index of 85-105. It spikes blood sugar faster than table sugar. For anyone concerned about metabolic health, insulin sensitivity, or diabetes risk, this is disqualifying.
Fats: Omega-3s vs Seed Oils
Huel uses flaxseed (rich in omega-3 ALA) and coconut oil. No seed oils.
Soylent uses canola oil and sunflower oil — two industrial seed oils providing 21g of primarily omega-6 fat. Nearly half of Soylent's calories come from seed oils.
Vitamin Quality
Huel uses L-Methylfolate (active folate), Vitamin K2 MK-7, and Vitamin D3. Soylent uses folic acid, no K2, and the inferior D2 form. Huel costs less and uses better forms. There's no contest here.
Bottom Line
Huel is the clear winner on virtually every dimension: more protein (2x), better carb sources, no seed oils, superior vitamin forms, more fiber, and a lower price. Soylent's only advantages are RTD convenience and brand recognition in tech circles.
At $3.25, Soylent costs 53% more than Huel while delivering inferior nutrition across the board. This comparison isn't close.
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