AG1 vs Bloom Greens (2026 Pharmacist Comparison)

By Kazi Habib, B.Pharm, MBA, PMP · Updated May 19, 2026

AG1 (formerly Athletic Greens) wins on NSF Certified for Sport status (third-party tested for banned substances and contaminants), ingredient comprehensiveness (75 ingredients vs Bloom's ~30), and clinical research grants funding actual studies. Bloom Greens wins on per-serving price ($1.30 vs AG1's $3.30), better palatability, and lower-stim caffeine-free formulation. The hard truth both companies skip: greens powders are not a substitute for vegetables, and most users would get more measurable health benefit from a $20 multivitamin and actual produce than from either product at any price.

Why trust this comparison

I am Kazi Habib, B.Pharm, MBA, PMP, with 10+ years across pharmaceutical sciences and life-sciences marketing. This comparison cross-references each brand's published Supplement Facts panel and NSF Certified for Sport database against the NIH Office of Dietary Supplements multivitamin fact sheets, the Wolf 2017 multivitamin meta-analysis, and a Canadian and US retail pricing audit run in April 2026.

Affiliate disclosure. Links pay FitFixLife a small commission if you buy. Medical disclaimer. If you take warfarin (greens powders contain vitamin K), are pregnant, have kidney disease, or have any chronic condition, consult your physician before adding daily greens powders.

Side-by-side ingredient comparison

Where AG1 wins

NSF Certified for Sport status. AG1 is one of the few greens powders carrying NSF Certified for Sport, which means the bottle was tested for banned substances (per WADA criteria) and contaminants. For competitive athletes subject to drug testing, this is non-negotiable. Bloom does not carry NSF certification.

Ingredient breadth. AG1 lists 75 ingredients vs Bloom's ~30. The breadth difference is real but most ingredients are at sub-clinical doses (covered in the pharmacist section below).

Probiotic dose. AG1 delivers 7.2 billion CFU vs Bloom's 1 billion. Neither is high by clinical standards, but AG1's is 7x higher.

Adaptogen sourcing transparency. AG1 discloses the patented Sensoril ashwagandha extract, which is the standardized form used in some clinical trials. The Majeed 2023 ashwagandha trial used 500 mg daily and observed significant cortisol reduction. AG1's ashwagandha dose per serving is below this trial dose.

Where Bloom Greens wins

Per-serving cost. $1.30 vs AG1's $3.30 = Bloom is 61% cheaper. A year of daily Bloom = $474; a year of daily AG1 = $1,204. The $730 annual difference buys a lot of actual produce.

Better flavor profile. Bloom's Original Greens (lemon and citrus) and Berry are widely reported to taste like an actual flavored drink, not a vitamin shake. AG1's flavor is polarizing; many users describe it as unpleasant requiring substantial dilution.

Caffeine-free formulation. Bloom contains zero caffeine. AG1 has trace caffeine (7.2 mg from green tea, about 7% of a cup of coffee). For caffeine-sensitive users or evening hydration contexts, Bloom is the cleaner choice.

Includes magnesium and calcium. Bloom labels calcium and magnesium clearly; AG1's mineral content is bundled into the broader trace mineral disclosure.

Halal status and certification

Neither AG1 nor Bloom currently carries formal halal certification by JAKIM, MUI, IFANCA, HFA, or ESMA. Both publish ingredient lists and assert no animal derivatives.

AG1. Vegan, gluten-free, dairy-free. Predominantly plant or mineral-derived. The natural flavors component is the unverified piece. Bovine collagen has been removed from the current formulation. Probiotic strains are bacterial; mushroom extracts are fungal. Halal-friendly by ingredient disclosure.

Bloom. Vegan, gluten-free, no animal derivatives. Bacillus coagulans GBI-30 probiotic is bacterial and halal. Bromelain (from pineapple) and papain (from papaya) digestive enzymes are plant-derived.

Canadian availability and pricing

AG1 in Canada. Primary purchase channel is drinkag1.com Canada with CAD-priced storefront. Subscription pricing roughly CAD $135-145 per 30-pack canister = CAD $4.50-4.85 per serving. Not consistently carried at Canadian retailers.

Bloom in Canada. Carried at Walmart Canada, Amazon Canada, and select retailers. Pricing roughly CAD $39.99-49.99 per 60-serving canister = CAD $0.67-0.83 per serving.

Canadian alternatives. Genuine Health Greens+ (Canadian brand at Shoppers Canada and Whole Foods Canada) at CAD $1.00-1.50 per serving is the Canadian-developed option. None match AG1's ingredient breadth or NSF Certified for Sport status.

Pharmacist take: ingredient breadth vs clinical dose

75 ingredients in 12 g of powder means most ingredients are at sub-clinical doses. AG1's 12 g serving distributed across 75 ingredients means average ingredient weight is 160 mg. Clinical dose of ashwagandha for cortisol reduction is 500 mg daily; rhodiola in stress trials is 200-600 mg daily; milk thistle for liver support is 200-400 mg daily. If AG1 contains all of these plus 72 other ingredients, none can be at clinical dose. The same math applies to Bloom but more compactly. Both products are essentially expensive multivitamins with green-colored marketing.

Greens powders are not vegetables. The most-evidenced way to get phytonutrients, fiber, and micronutrients is to eat vegetables. For users who genuinely cannot or will not eat vegetables, greens powders provide partial coverage; for the typical user buying as "in case my diet is missing something", the coverage is real but limited.

The gut health claims are mostly marketing. Bloom's 1 billion CFU and AG1's 7.2 billion are both modest compared to the 10-50 billion CFU typically used in clinical probiotic trials. For users specifically targeting gut health, a dedicated probiotic at 25-50 billion CFU with strain-specific evidence (Visbiome for IBS, Culturelle for travelers' diarrhea) is more effective.

Use cases: who picks what

• Pick AG1 if you are a competitive athlete needing NSF Certified for Sport; you value maximum ingredient breadth; you can pay $3.30/serving; you travel and want a single covering-all-categories product.
• Pick Bloom if you want a daily greens-powder habit at a budget-conscious price; flavor compliance matters more than breadth; you are caffeine-sensitive; you have basic produce intake but want a small daily insurance layer.
• Pick something else if you actually want gut health support (strain-specific probiotic at 25-50 billion CFU); vitamin/mineral insurance ($20 generic multivitamin); vegetable phytonutrients (eat vegetables); adaptogen support (standalone ashwagandha at the clinical 500 mg dose).

Dosing protocol and timing

AG1. 1 scoop (12 g) in 8-10 oz of cold water, daily, ideally on an empty stomach in the morning. Fat-soluble vitamins (A, K2) absorb better with a meal containing fat. Taking with coffee can blunt iron absorption; space by 1-2 hours.

Bloom Greens. 1 scoop (6 g) in 8-12 oz cold water, daily. Same fat-soluble vitamin and coffee-spacing considerations apply.

Drug interactions worth flagging. Vitamin K in both products affects warfarin INR; coordinate with prescriber. Iron in Bloom should not be taken within 2 hours of tetracycline or fluoroquinolone antibiotics. Ashwagandha can interact with thyroid medications, sedatives, and immunosuppressants. For immunocompromised users, even commercial probiotic strains can pose rare infection risk.

Bottom line

AG1 is the better product for users who want to consolidate their supplement stack into one scoop and value NSF Certified for Sport. It is expensive but potentially cost-effective when it replaces 3-4 separate supplements. Bloom is better for users who already take a multivitamin and probiotic separately and just want an affordable greens boost with good taste. Neither is a replacement for eating actual vegetables.