BiotiQuest Case Study: +27% CVR | GrowthHit
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BiotiQuest Case Study

BiotiQuest is a science-driven probiotic supplement brand founded by Martha Carlin, offering products like Sugar Shift, Perfect Peace, Simple Slumber, and Ideal Immunity.

GrowthHit ran a full-funnel growth program — Shopify CRO, Meta paid social, and email marketing — transforming a credible brand into a high-converting ecommerce engine.

+27%

Conversion Rate

+42%

Average Order Value

+22%

Email-Attributed Revenue

Conversion Rate Optimization

Homepage Conversion Redesign

BEFORE AFTER
Before
After
+27% CVR

Product Page (PDP) Optimization

BEFORE AFTER
Before
After
+42% AOV

Challenges/goals

What BiotiQuest Needed

  • A Shopify store that converted science-curious visitors into buyers. BiotiQuest had the research, the founder story, and a genuinely differentiated product. What they didn't have was a website experience that closed the gap between interest and purchase. Conversion rate optimization was the unlock — not more traffic.
  • Product page performance across multiple SKUs. With a growing catalog (Sugar Shift, Perfect Peace, Simple Slumber, Ideal Immunity, Heart Centered, Antibiotic Antidote), each product needed its own optimized PDP experience. A rising tide needed to lift all boats, not just the flagship.
  • A paid social program that scaled profitably. BiotiQuest's TEDx-style founder content and podcast clips had proven organic reach. What was missing was a structured Meta ads program that could systematically test creative, identify the highest-converting formats, and scale spend at an efficient CPA across product lines.
  • A full email program to drive repeat purchase and subscriptions. Supplements are a retention business — LTV only compounds if customers reorder. BiotiQuest needed the full stack: welcome series, abandoned cart, post-purchase flows, win-back, and a promotional calendar that drove revenue without burning the list.

SOCIAL ads

Creatives that drove results

EMAIL

Retention-driven email campaigns

What we learned

Lessons from helping BiotiQuest grow

The science was never the problem. Here's what the data showed us:

Social proof doesn't work if visitors never see it.

BiotiQuest had real customer testimonials and credibility signals — they were just hidden below the fold. Moving social proof to the top of the homepage produced a +30.5% CVR lift and a +44.9% increase in add-to-cart rate. On a Shopify supplement store, the fastest conversion rate optimization win is often the simplest: show trust earlier.

Product photography is a conversion lever, not a brand expense.

The Sugar Shift PDP imagery test was one of the clearest wins in the engagement. Replacing outdated photos with new product photography — no copy changes, no structural redesign — drove a 29% increase in purchase CVR and a 42% revenue lift. For DTC ecommerce brands, underinvesting in imagery is one of the most expensive mistakes you can make.

Cart upsell is the highest-ROI move most Shopify stores haven't fully implemented.

Adding a cart upsell that recommended complementary products (Simple Slumber and Ideal Immunity alongside Sugar Shift) generated $21,146 in additional revenue — with the Sugar Shift bundle cart conversion rate rising from 22.31% to 27.96%. In a subscription supplement business, every upsell at the cart is also a subscription upsell. The math compounds.

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