Kat Cole on AG1's push into retail, clinical research, and U.S. manufacturing

Summary

AG1 closed 2024 at $600 million in annual revenue from a single product sold through a single channel, drinkagg.com, without an Amazon presence. That model is now changing. CEO Kat Cole announced a direct national partnership with Costco this week, the company's first retail move, bypassing the traditional multi-retailer rollout entirely. Cole frames retail not as a replacement for DTC but as a marketing surface, describing shelf placement as a billboard that compounds rather than cannibalizes subscription revenue.

From One Plant to a Tariff-Resilient Supply Chain

When Cole joined in November 2021, AG1 was manufacturing entirely out of a single plant in New Zealand while the majority of its revenue came from the US. Expanding US manufacturing was her first priority, and that decision has provided structural insulation during the current tariff volatility. The company now sources ingredients globally, blends regionally, and owns its sourcing relationships, a configuration that most DTC supplement brands lack.

The $120 million raise at a $1.3 billion post-money valuation in late 2021 was the only outside capital AG1 has ever taken. The business had reached $160 million in revenue bootstrapped, with a 90% subscription rate before that round closed.

Clinical Research as a Competitive Moat

Rather than accelerating marketing spend after the raise, Cole pulled back lower-funnel spend and redirected capital into four double-blind, randomized, placebo-controlled clinical trials covering more than 100 participants across four distinct populations. The trials, which take years to complete and require a dedicated PhD team, documented outcomes including a 10x increase in beneficial gut bacteria. Cole treats this investment as a leadership obligation given the supplement industry's credibility problem, noting that most competitors have no human clinical data at all.

The company also maintains NSF for Sport third-party certification, one of the most demanding and expensive standards in the category. Any formula change requires restarting NSF's shelf-life testing process.

Amazon Return Driven by Counterfeits, Not Growth

AG1 avoided Amazon for years while organic search and podcast-driven awareness fueled growth. The decision to return was triggered by three converging factors: a proliferation of counterfeits, including physically distinct products being intercepted by customs, unauthorized resellers aging out inventory and damaging product quality, and ratings on Amazon collapsing to roughly three stars from reseller-driven reviews. Cole credits Amazon's Transparency program and IP enforcement tools for making return viable. AG1 also added randomized hologram numbers to all packaging before rejoining the platform. Since returning, resellers and counterfeits have been removed, and ratings have recovered.

AI Deployment Focused on Service and Supply Chain

AG1's first material AI deployment was in customer service, in partnership with Sierra. Cole says 50% of customer inquiries were routine account management tasks suited to automation. Savings were redeployed into human-staffed concierge and loyalty programs, areas the company was late to build as a subscription business. A second application is AI-assisted ingredient traceability across the supply chain, where the company's unusually high testing specifications had created significant manual tracking burden. On the marketing side, AG1 is using AI for digital backgrounds and B-roll but has a firm policy that any depiction of real product or real people must be filmed, not generated, citing the supplement industry's history of misleading claims.

Retention as the Actual Business Model

Friends and family referrals are AG1's largest single customer acquisition channel, outperforming podcasts, influencers, and television combined, according to post-purchase surveys. Cole reports more than 500 customers with a decade of continuous purchasing history. She attributes AG1's ability to reach $600 million on one SKU to that retention engine rather than to DTC marketing sophistication, arguing the company was not an especially skilled e-commerce operator but had a product whose results compounded loyalty over time.

Cole is openly critical of supplement industry standards broadly and has offered her team's guidance to founders who want to build compliant businesses, framing low-quality operators as a systemic reputational risk to the entire category.