The strongest AG1 alternative for gut health is a greens powder that leads with probiotics and prebiotic fiber rather than sheer ingredient count.
Biome Theory Super Greens is built exactly that way: one caffeine-free scoop delivers 35 superfoods, 12 billion CFU of probiotics and six blends in one, a gut-first take on the all-in-one greens category AG1 made popular.
- Gut-first vs broad nutrition: Biome Theory prioritizes probiotics and prebiotic fiber; AG1 prioritizes breadth (75 ingredients).
- Caffeine: Biome Theory is fully caffeine-free; AG1 contains matcha and cocoa, adding trace caffeine.
- Price tier: Both are premium, AG1 is ~$79/month, Biome Theory is $78.75, not a budget alternative.
- Same routine: One daily scoop in water, so switching is effortless.
Why people look for an AG1 alternative
AG1 (formerly Athletic Greens) popularized the "one scoop replaces your supplement shelf" idea. It is a genuinely comprehensive product. But it is not the only option, and a few recurring reasons send people looking elsewhere.
- Price sensitivity: at roughly $79/month on subscription, AG1 is among the most expensive greens powders available.
- Caffeine sensitivity: AG1 includes matcha leaf and cocoa, which contribute naturally occurring caffeine, not ideal for an evening scoop.
- Gut-health priority: some people want a formula built around probiotics and fiber first, rather than broad multivitamin coverage.
- Proprietary blends: like most greens powders, AG1 uses proprietary blends, so exact per-ingredient doses aren't listed.
If any of those resonate, a focused alternative may fit better. Here's the honest side-by-side.
Biome Theory vs AG1: the honest comparison
Both are once-daily greens powders you mix into water. The difference is philosophy — breadth versus gut-focused depth.
| Feature | Biome Theory Super Greens | AG1 (Athletic Greens) |
|---|---|---|
| Core focus | Gut health (probiotic + fiber forward) | Broad daily nutrition |
| Probiotics | 12 billion CFU, 3 strains | Probiotic blend included |
| Blends in one | 6 (greens, antioxidant fruits, prebiotic fiber, probiotics, enzymes, adaptogens) | 75 ingredients across 5 categories |
| Caffeine | Caffeine-free | Trace, from matcha & cocoa |
| Flavors | Mango & Berry | Original, Citrus, Berry |
| Price | $78.75 / 25 servings (subscribe & save available) | ~$79/mo subscription / 30 servings |
| Availability | Direct from biometheory.shop | Subscription, brand site only |
AG1 figures are drawn from publicly reported pricing and ingredient information as of 2026. AG1 is a registered trademark of its owner; Biome Theory is not affiliated with AG1.
Where AG1 wins
Credit where due. AG1 offers sheer breadth, 75 vitamins, minerals, botanicals, enzymes and probiotics, plus NSF Certified for Sport testing and a long track record. If you want a single product to cover as many micronutrient bases as possible, that breadth is a real strength.
Where Biome Theory wins
Biome Theory trades breadth for gut-focused depth. It leads with a higher probiotic dose, pairs it with prebiotic fiber to feed those bacteria, and adds digestive enzymes, the combination most associated with how prebiotics and probiotics work together. It's also fully caffeine-free, so it fits any time of day.
Which one is right for you?
Use this quick guide rather than a blanket "better/worse."
- Choose AG1 if: you want the widest possible micronutrient coverage in one scoop and sport-level testing.
- Choose Biome Theory if: your priority is digestion and gut health, you want a higher probiotic dose, or you need a caffeine-free option.
- Either works if: your real goal is simply a consistent daily greens habit, the best greens powder is the one you'll actually drink every day.
One caffeine-free scoop. 35 superfoods, 12B probiotics, 6 blends in one.
Shop Biome Theory Super Greens →Frequently Asked Questions
What is the best AG1 alternative?
The best AG1 alternative depends on your priority. If your main goal is gut health, Biome Theory Super Greens is a strong option: it delivers 12 billion CFU of probiotics across 3 strains, prebiotic fiber and digestive enzymes in one caffeine-free scoop, at a comparable premium price.
Does AG1 contain caffeine?
AG1 has no added caffeine, but it contains matcha leaf powder and cocoa, which contribute a small amount of naturally occurring caffeine. Biome Theory Super Greens is fully caffeine-free, which is why some people switch when they want an evening or caffeine-sensitive greens routine.
Is there a cheaper alternative to AG1?
Yes. Brands like Bloom, Amazing Grass and Live it Up are priced below AG1 per serving. Biome Theory sits in the same premium tier as AG1, prioritizing a higher probiotic dose and gut-health focus rather than a lower price, though its subscribe and save option reduces the per-serving cost.
Does Biome Theory have more probiotics than AG1?
Biome Theory leads with a higher probiotic dose than AG1, delivering 12 billion CFU from 3 strains per scoop. AG1 also includes a probiotic blend, but its formula is built around broad nutrition rather than a probiotic-forward, gut-health-first design.
Can I switch from AG1 to Biome Theory?
Yes. Both are once-daily greens powders you mix into water, so the routine is identical. If you are switching for gut-health or caffeine reasons, simply replace your morning AG1 scoop with one scoop of Biome Theory Super Greens in cold water.
How much does Biome Theory cost compared to AG1?
AG1 is about $79 per month on subscription for 30 servings. Biome Theory Super Greens is $78.75 for 25 servings, with a subscribe and save discount that lowers the per-serving cost. Both are premium daily greens powders rather than budget options.
Are AG1 alternatives as effective?
Effectiveness depends on the formula and your goals, not the brand name. A well-formulated alternative with meaningful doses of probiotics, prebiotic fiber, enzymes and greens can support digestion and daily nutrition just as well. Consistency matters more than which quality greens powder you choose.
Final thoughts
There's no single "best" greens powder, there's the one that fits your goal. AG1 wins on breadth; Biome Theory wins on gut-focused depth and a caffeine-free formula, at a similar premium price.
If digestion and a higher probiotic dose are what you're after, Biome Theory is a genuinely competitive AG1 alternative. Explore both Berry and Mango flavors, or learn more in our guide to the best gut health drinks.
*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease. This article is for educational purposes and is not medical advice; consult a healthcare professional before changing your supplement routine. AG1 and Athletic Greens are trademarks of their respective owner; Biome Theory is independent and not affiliated with AG1.