Soylent built its reputation on complete meal replacement — first as a drink, then as bars. The brand's promise is simple: 20% of your daily nutritional needs in every serving, backed by a science-first approach to food. But Soylent's bar line has had a rocky history. Here's where things stand in 2026.
Soylent launched its original food bar in 2016 — and promptly recalled it after widespread reports of customers getting violently ill. The culprit was likely an algal flour ingredient. The bars were discontinued, reformulated, and relaunched multiple times. This history matters because it shaped consumer trust (or lack thereof) and forced Soylent to be more transparent about ingredients.
The current Soylent bars (Squared line) are a complete reformulation from the originals. Different ingredients, different format, different manufacturing. But the brand's history still follows them in reviews and consumer sentiment.
Current Soylent Squared bars:
With only 5g of protein and 100 calories, Soylent Squared bars are not protein bars in any meaningful sense. They're miniature meal replacement snacks designed for convenience and nutritional completeness. You'd need four of them to match the protein in a single Quest bar.
The original larger Soylent bars (now discontinued in most markets) had 12-15g protein and 250 calories. If those return, the protein story changes. As of 2026, the Squared format is the primary bar offering.
Positives:
Concerns:
Soylent takes a "nutritional science" approach rather than a "whole food" approach. Every nutrient is precisely measured and added. If you value nutritional completeness over ingredient simplicity, this works. If you want clean-label bars, look at RXBAR or Aloha instead.
Soylent Squared bars are small (100-calorie snack size) with a soft, brownie-like texture. Flavors include Chocolate Brownie, Citrus Berry, and Salted Caramel. The taste is acceptable but unremarkable — mildly sweet with a slight soy aftertaste. They're designed to be inoffensive and convenient rather than delicious.
Most reviews describe them as "fine" rather than "great." They won't satisfy a candy bar craving the way Built Bar or Barebells might, but they're easy to eat quickly.
Soylent Squared bars run approximately $1.50-2.00 per bar. At 5g protein, that's $0.30-0.40 per gram of protein — extremely expensive from a protein perspective. But the value proposition isn't protein — it's the complete micronutrient profile. You're paying for convenience and nutritional insurance, not protein delivery.
Best for:
Not ideal for:
Soylent bars are not protein bars. They're nutritional convenience snacks that happen to contain some protein. If you're on this site looking for protein bars, Soylent isn't the answer. If you want a 100-calorie snack that covers 20% of your daily vitamins, the Squared format does that job. For actual protein delivery in bar form, look at literally any bar in our best protein bars ranking.
Rating: 5/10 — Interesting concept, poor execution as a protein bar. Decent as a fortified snack, but doesn't belong in the protein bar conversation.
Unearth the cleanest protein bars you can buy right now. (Some might even have superfoods)
Read MoreAt Protein Bar, we’re committed to helping you look and feel your best, which starts by raising the bar (pun intended) in the nutrition industry. We're currently in stealth mode, but you can join our waiting list to receive exclusive access to new products and become a beta tester!
