Now booking Q4 projects — get a free Shopify audit
Shopify Plus Partner · Supplement, nutrition & wellness brands

The Shopify Plus agency for supplement and wellness brands

DesignDevelopmentCROGrowthEmail & SMS · Klaviyo

Supplement ecommerce done properly: Shopify design and development, CRO, growth marketing and Klaviyo email & SMS for nutrition, supplement and health brands — built around subscriptions, trust and claims that stay compliant.

Results, not renders

What a supplement launch built to convert looks like

All case studies →
43%
Subscription order conversion
Intervel · functional pouches
4.11%
Conversion rate at launch
Intervel · Shopify launch
6.8%
Add-to-cart rate
Intervel · benefit-led PDPs
$175
Average order value
Intervel · bundles & tiered pricing
Brands we've pushed

Built for products people put in their bodies

Intervel on Shopify
01

Intervel

Functional wellness pouches · Shopify launch

A full Shopify storefront launch built around a gamified subscription buy box: shoppers mix flavors, watch tiered savings grow in real time, and choose subscribe-and-save up front. Ingredient libraries and benefit-led PDPs answer “what’s in it and does it work” before checkout.

4.11%Conversion rate
43%Subscription orders
$175Average order value
Read the Intervel case study →
Intervel · Bliss on Shopify
02

Intervel · Bliss

Benefit-led product page

The product page as a conversion system: trust badges (natural ingredients, lab-tested, 30-day guarantee), scannable benefits, a flavor bundle builder and free-shipping threshold messaging — designed to make the subscription the obvious choice.

6.8%Add to cart
BundlesMix-and-match
TieredLive pricing
How Intervel got 43% to subscribe →
JYM Supplement Science on Shopify
03

JYM Supplement Science

Sports nutrition · formulated by Dr. Jim Stoppani

A science-first supplement line built as a complete system — and a store that sells it that way. Fully disclosed labels and no proprietary blends up front, Stack & Save bundles that sell the full regimen, Subscribe & Save, rewards and a 30-day money-back guarantee.

StacksBundle the regimen
Subscribe& Save
100%Disclosed labels
Visit jymsupplementscience.com ↗
Bare Performance Nutrition on Shopify
04

Bare Performance Nutrition

Performance supplements · third-party tested

Performance and health supplements for athletes, sold on proof: third-party testing on every batch and NSF Certified for Sport, front and center. A product-finder quiz, best-seller paths and a 25%-off subscription turn training routines into recurring orders.

NSFCertified for Sport
25%Subscribe & save
QuizGuided product finder
Visit bareperformancenutrition.com ↗
What we do

One team for the whole supplement growth stack

Design, Shopify development, conversion rate optimization, growth marketing and lifecycle email & SMS — under one roof, so the store, the subscription and the follow-up all work together.

01

Design

Supplement website design

Brand-led, mobile-first design that sells a product people can’t taste or touch online — so the page has to do the convincing.

  • Supplement website design & redesigns
  • Benefit-led PDP templates
  • Ingredient & research pages
  • Bundle and build-a-box UX
  • Subscription offer design
  • Design systems for fast launches
02

Development

Shopify & Shopify Plus

Clean, fast Shopify Plus builds with the logic supplement brands rely on: subscriptions, bundles, wholesale and the integrations that run the business.

  • Custom Shopify themes
  • Recharge, Skio & Shopify subscriptions
  • Mix-and-match bundle logic
  • B2B & wholesale portals
  • Migrations to Shopify Plus
  • Speed & Core Web Vitals
03

CRO

Conversion rate optimization

Trust drives supplement conversion. We test what proves it — reviews, third-party testing badges, guarantees, ingredient transparency — and keep what wins.

  • A/B testing program
  • Heatmaps & session recordings
  • PDP & buy-box experiments
  • Subscribe-and-save offer testing
  • Cart & checkout optimization
  • Analytics & attribution setup
04

Growth

Growth & marketing

When paid ads are harder to get approved, owned channels and search carry more weight. We build the organic and content engine around your store.

  • Supplement SEO & content strategy
  • AI search & answer-engine visibility
  • Landing pages for paid traffic
  • Reviews & UGC programs
  • Referral & loyalty
  • Amazon vs DTC channel strategy
05

Lifecycle

Email & SMS with Klaviyo

Supplement revenue lives in the reorder. Klaviyo flows timed to your dosage cycle turn first orders into subscriptions — and subscriptions into habits.

  • Klaviyo setup & audits
  • Onboarding & how-to-take-it flows
  • Replenishment timed to dosage
  • Subscription save & winback flows
  • Campaign calendar & design
  • SMS programs
Why supplement ecommerce is different

Generic Shopify playbooks miss what supplement shoppers need

Supplement shoppers buy on trust and come back on habit. Across ~1,750 supplement brands, Recharge’s data shows 75% of subscribers place a second order but only about half reach a third — the store, the offer and the follow-up all decide which side of that line you land on.

01

Claims that convert — and stay compliant

Product copy has to sell without crossing into disease claims. FDA structure/function rules, the required disclaimer and FTC substantiation all shape the page.

→ PDP templates with disclaimers, ingredient panels & testing badges built in
02

Subscriptions that survive the third order

Getting the first subscription is the easy part. Retention is decided in the next two reorders.

→ Skip/swap portals, save offers & Klaviyo flows at the drop-off points
03

Trust before checkout

Shoppers want to know what’s in it, how much, and whether it’s tested — before they’ll buy something they’ll take daily.

→ Ingredient libraries, dosage guides, reviews & UGC, guarantees
04

Ad approval & payment friction

Health products face tighter ad review and payment-processor scrutiny, so owned channels and clean copy matter more.

→ Search, email & SMS engines; copy reviewed with processor policies in mind
05

Bundles, stacks & AOV

Supplement shoppers buy routines, not single SKUs. A flat product grid leaves money on the table.

→ Build-a-box, stacks, tiered discounts & cart upsells
06

Amazon vs DTC

Marketplaces bring volume; your own store brings the customer, the data and the subscription margin.

→ A DTC store that earns the reorder — and an honest channel plan
We build with KlaviyoRechargeLoopOkendoYotpoRebuyNosto
How we start

From audit to compounding growth

Book the free audit →
01

Free store audit

We review your PDPs, subscription flow, speed, reviews and email program and show you where revenue is leaking.

Week 1
02

Roadmap

A prioritized plan — quick wins first, bigger builds sequenced by impact, effort and your launch calendar.

Week 2
03

Design & build

Conversion-first design and Shopify development, shipped in focused sprints.

Sprints
04

Test & grow

A/B tests, Klaviyo flows and campaigns, and monthly reporting — so every improvement compounds.

Ongoing
FAQ

Questions supplement founders ask us

Don't see yours? Ask us directly — we reply within one business day.

What makes NINE15 a good Shopify agency for supplement brands?

We combine design, Shopify Plus development, CRO and Klaviyo lifecycle under one team, and we know the category from the inside — brands like Intervel, JYM Supplement Science and Bare Performance Nutrition. At Intervel’s launch, the store converted at 4.11% and 43% of orders were subscriptions.

Can our product pages make health claims?

Dietary supplements can make structure/function claims (for example, “supports restful sleep”) with the required FDA disclaimer and proper substantiation — not claims to treat or prevent disease. We build PDP templates with the disclaimer, ingredient panel and testing badges in place and write conversion copy that stays inside those lines. Final claims should always be reviewed by your regulatory counsel.

Does Shopify Payments allow supplement brands?

Most supplement brands can use Shopify Payments, but copy that reads as drug-like, or certain ingredients, can trigger a review. We audit product copy with processor policies in mind and help you plan a backup processor if your category needs one.

Which subscription app should a supplement brand use on Shopify?

It depends on your bundles, build-a-box needs and customer-portal experience. We implement and customize Recharge, Skio and Shopify’s native subscriptions, and we design the subscribe-and-save offer itself — often the biggest lever.

How do you improve supplement subscription retention?

Retention is decided early: Recharge’s data across roughly 1,750 supplement brands shows about half of subscribers reach a third order. We focus on those first reorders with onboarding and how-to-take-it flows, skip-and-swap options, save offers and replenishment timed to the dosage cycle.

Should we sell on Amazon or build our own Shopify store?

Usually both. Amazon brings discovery and volume; your Shopify store is where you own the customer relationship, the data and the subscription margin. We help you decide what each channel is for and build the DTC side to win the reorder.

Is CRO different for supplement and wellness stores?

Yes. People are buying something they’ll take every day, so trust signals carry more weight: third-party testing, ingredient and dosage transparency, reviews, guarantees and clear subscription terms. Those are what we test first.

What does working with you cost, and how do we start?

Every engagement starts with a free store audit. From there we scope a project (new site, migration or redesign) or a monthly retainer for ongoing CRO, development and Klaviyo — based on what will actually move revenue for your brand.

Get a free store audit

Let's grow your supplement brand

Tell us about your brand and store. We'll review it and come back with the three changes we'd make first — whether or not we end up working together.

hello@nine15.com
Who you're talking to

NINE15 — Shopify Plus Partner

Encinitas, California · working with brands across the US

858-775-0221

We'll also send you The NINE15 Letter — unsubscribe anytime.

The NINE15 Letter · Monthly

Playbooks for supplement & wellness brands, not promos

The tests, flows and fixes we run for clients — subscription offers, PDP experiments, Klaviyo flows — plus first dibs on Commerce Collective invites.