Growth strategy

Why Supplement Brands Stall at Scale - and the Two-Agency Problem Behind It

By Sunil Chandarana7 min readUpdated October 2, 2026
Summary

Supplement brands rarely stall because demand dries up. They stall because marketing grows faster than the infrastructure behind it - the store, the tracking, the compliance process and the reporting. Splitting technology and marketing across two agencies makes the gap worse. Brands that scale build infrastructure and marketing together.

Why it matters

When growth flattens, the instinct is to spend more on ads. More often, the constraint is the operating model behind the marketing - and that’s a CEO-level fix.

What leaders need to know
  • Plateaus usually come from infrastructure gaps, not lack of demand.
  • Two agencies means two plans, two sets of numbers and slower decisions.
  • Fixing the foundation often unlocks growth faster than new spend.
  • One accountable team for tech, AI and marketing simplifies leadership’s job.

What does “stalling” look like?

Ad costs rise but sales don’t. Conversion rates slip as traffic grows. Reports disagree. Compliance questions start appearing. New channels get launched before the existing ones are working well. Everyone is busy, but growth has flattened.

The infrastructure gap

  • Store: a site that worked at launch can’t handle new traffic, products or subscriptions
  • Tracking: data is incomplete, so budget follows guesses instead of profit
  • Compliance: claims multiply across ads, emails, influencers and marketplaces without a review system
  • Reporting: nobody has a single, trusted view of what’s working

The two-agency problem

Most marketing agencies can run campaigns but can’t build. Most development shops can build but don’t understand marketing. So brands hire both. The marketing agency asks for a new landing page and better tracking; the developers have their own queue. Weeks pass. When results dip, each side points at the other.

Founder note: after more than two decades in e-commerce - including ten years as a CTO of marketing agencies - I saw this pattern so often that Doo Digital was built specifically to solve it.

What to build instead

  • One growth plan that covers the store, the data and the campaigns
  • A claims framework applied across every channel
  • Accurate tracking and one live source of truth for reporting
  • A single accountable team that can find a problem and fix it

Where AI fits

AI is the next layer: automating reporting, flagging changes and answering questions about performance. That’s why we built Reportdesk.ai, with Ask Repo, an AI agent that answers questions about your marketing data. But AI amplifies whatever foundation it sits on - build the foundation first.

A CEO’s growth-readiness check

  • Do we have one trusted number for revenue, CAC and ROAS that everyone uses?
  • When marketing needs a site change, how many days does it take?
  • Who is accountable when results dip - and do they control both the store and the campaigns?
  • Is our reporting weekly and live, or monthly and backward-looking?
  • Are we adding channels before the existing ones are working?
Sunil ChandaranaFounder & CEO, Doo Digital and Reportdesk.ai. In e-commerce and digital marketing since 1999. LinkedIn

Frequently asked questions

Why do supplement brands stop growing?

Usually because marketing scales faster than the store, tracking, compliance and reporting behind it. Fixing those foundations often unlocks growth faster than adding ad spend.

Is it better to have one agency for tech and marketing?

For most growing brands, yes. One team removes hand-offs, speeds up fixes and gives you one accountable plan and one set of numbers.

What does Doo Digital do differently?

We combine marketing, e-commerce technology, AI and compliance in one team, and report everything in Reportdesk.ai, our own reporting platform.

What is the two-agency problem?

It’s when a brand uses one agency for technology and another for marketing. Hand-offs slow every change, numbers don’t match and accountability is split. Many growing brands solve it by moving to one team that does both.

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