In short
- Give advice its own options. "Doctor or pharmacist" and "A creator" belong in the attribution question, because advice drives this category.
- Ask for the buyer's health goal once, and let it shape every email after.
- Ask about results after a full bottle, and keep health claims out of your answer options.
What makes supplements different
Supplements are a daily habit for most people. The CRN 2026 Consumer Survey found that 75% of US adults use them, and 46% use them regularly.
Buyers listen before they buy. In the same survey, 77% say a medical doctor influences what they take, 51% name supplement company materials, and 35% name social media creators. A doctor's advice leaves no click to track, so your reports never see it.
Price and loyalty pull in two directions. If prices rose 15%, 73% would look for savings, buy less or stop, while 9% would pay more without changing anything. Yet in CRN's 2024 survey , 71% of users said they are loyal to their brands and 69% said a personal regimen matters when they choose. Buyers stay when the product fits their goal.
What your reports miss
Your analytics cannot see the doctor who mentioned you, the goal the buyer is working on, or whether they will reorder when the bottle runs out. Those answers decide which content you make, which flow each buyer gets and how you price refills. Here is how to ask the first question and read the answers.
The questions to ask
1. Who or what recommended us?
- Why it matters: Advice is the main way into this category, and most of it happens offline.
- If many say doctor or pharmacist: Put full ingredients, doses and testing details where a professional can check them in one look, and think about a referral program for practitioners.
2. What is your main health goal?
- Why it matters: Buyers say a personal regimen matters, and the goal tells you what personal means for each one.
- If two goals lead: Build one email flow per goal. On the Growth plan the answer lands on the buyer's Klaviyo profile, so a sleep buyer and a training buyer get different content and different next products.
3. Have you taken this kind of supplement before?
- Why it matters: First timers need to learn how to take it. Switchers tell you which brands you win buyers from.
- If many switched: On the Growth plan, add a Short answer follow up asking why, and use their words in your ads.
4. What would make you reorder?
- Why it matters: Most buyers would hunt for savings after a price rise. This shows whether your lever is price, convenience or results.
- If most pick a subscription or a reminder: Offer subscribe and save, and time a refill email to land a few days before the bottle runs out.
5. After 30 days, how do you feel about the results?
- Why it matters: Most supplements take weeks. Early reviews measure delivery, not results.
- If scores are low: Read the written answers, which AI groups into topics. Often the issue is how or when people take it, and a short dosing email fixes that.
When to ask
In SEA Survey, the post purchase email waits until the order ships, then for the delay you set in days. Our advice for supplements:
| Moment | Question | Why then |
|---|---|---|
| Thank you page | Who or what recommended us? | The advice is fresh in their mind |
| Thank you page | Health goal, tried it before, what would make you reorder | It takes three taps, and you can use the answers from day one |
| Email about 30 days after the order ships | How do you feel about the results? | A full bottle has had time to work |
Example: what a sleep supplement brand would do
This example is made up to show the steps. Your own responses decide.
Say you sell a magnesium blend for sleep and spend most of your budget on Meta. The Thank you page survey shows that a large group of buyers picks "Doctor or pharmacist", and most of them choose better sleep as their goal. Many first timers say they are not sure when to take it.
That points to three moves. Add a one page summary for practitioners with doses and test results. Send first timers a short email on when to take it, on day two. Time the refill email to day 25 of a 30 day bottle. The 30 day score then tells you whether the new email lifts how buyers feel about results.
Mistakes to avoid
- Answer options that read like health claims. "Cured my insomnia" sounds like a claim if you ever quote it. Ask about goals and how the buyer feels instead.
- Leaving doctors out of the attribution question. For many brands, it is the biggest source your reports cannot see.
- Asking about results on day one. The buyer has not taken a single dose yet.
FAQ
Is it fine to ask health questions?
Keep them to goals and habits, such as sleep, energy or training. Do not ask for a diagnosis or a medical condition. You do not need it to send better emails.
Does a survey slow down checkout?
No. The Thank you page shows after the order is placed, so the survey never stands between a buyer and paying.
Can I tag customers by their answer?
Yes. The Sea Survey Submitted trigger in Shopify Flow can tag customers or orders by answer, so a sleep buyer can enter a sleep flow in any tool that reads Shopify tags.
Sources: CRN, 2026 Consumer Survey on Dietary Supplements, October 2026. CRN, 2024 consumer survey release, October 2024. Timing in this post is our advice, not a measured rule.
