Flex for
supplements Brands
Unlock new revenue by making your supplements HSA/FSA eligible
Boost checkout conversion by 30% and AOV by 50% with the only HSA/FSA payments solution built for leading supplements brands
Trusted by top supplements brands
The Problem
Most customers don’t realize many supplements—like vitamins, probiotics, and other products—can qualify for HSA/FSA spending. That means over $150B in consumer health funds often goes unused, leaving supplement brands with missed revenue. Even informed shoppers face friction from reimbursement forms and approval delays, leading to frustration and checkout drop-off.
The Solution
Flex helps supplement brands unlock the $150B+ HSA/FSA market through seamless, end-to-end checkout. We verify product eligibility, enable direct HSA/FSA payments, and instantly generate Letters of Medical Necessity when required. The result: higher conversions, larger orders, and happier customers who can save on the supplements that keep them healthy every day.
Effortless HSA/FSA payments
Enable seamless HSA/FSA payments for supplements products in-app or on your website. We handle the complexity of split cards, subscriptions, and more.
Compliance you can rely on
Flex helps manage HSA/FSA eligibility for supplements products before and after purchase. When a Letter of Medical Necessity is required, we guide customers through a secure telehealth review so physicians can determine eligibility and issue documentation when appropriate.
Smarter insights
Access powerful dashboards and insights to identify your customers' spending trends and generate more revenue.
Why Flex
Boost conversion and increase order value
Flex’s streamlined checkout drives up to 30% higher conversion and 50% higher AOV by letting customers pay for supplements and nutrition products directly with their benefits.
Top Benefit Plans Opted
30%
20%
10%
40%
supplements Membership
End-to-end solution to accept HSA/FSA payments for supplements
Flex helps verify eligibility for supplement & nutrition products and services, processes HSA/FSA payments, and supports physician-reviewed Letters of Medical Necessity when required—reducing paperwork and friction that cause drop-off.
Latest Orders
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John Doe
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Easy-to-integrate solution for enterprise and smaller brands
Whether you’re on Shopify, another ecommerce platform, or running custom checkout flows, Flex fits seamlessly into your stack. Most supplements brands launch in less than a day.
Trusted, experienced team
From setup to scale, our team ensures you get live quickly, implement best practices, and capture demand. Plus, we’ll feature your brand across our channels to our high-intent HSA/FSA shoppers.
The Impact
Why our customers love Flex
FAQs
Need more help? Reach out to a Flex Specialist today.
What is HSA/FSA?
Health Savings Accounts (HSAs) and Flexible Spending Accounts (FSAs) are tax-advantaged accounts that allow individuals to set aside pre-tax dollars for qualified medical expenses. Many Americans use these accounts to pay for everyday health-related purchases—including eligible sleep wellness products like mattresses, bedding, sleep tech, and clinical sleep aids.
How do I know if the supplements I sell are HSA/FSA eligible?
Flex automatically verifies the eligibility of each supplement and wellness product you sell, and will flag which ones can be made HSA/FSA eligible—with or without a Letter of Medical Necessity (LMN).
Can Flex help my customers get a Letter of Medical Necessity (LMN) for supplements during checkout?
Yes. If a supplement or nutrition purchase requires a Letter of Medical Necessity (LMN), Flex prompt a telehealth consultation during checkout. A healthcare practitioner reviews the customer’s information and, if approved, the LMN is typically emailed within about 2 hours.
What types of supplement products can I sell that are typically HSA/FSA eligible?
General Wellness Supplements Supplements taken to support overall health and fill dietary gaps in essential vitamins and nutrients | With Letter of Medical Necessity
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Condition-Specific Supplements Targeted supplements used to manage or prevent specific health conditions under medical guidance | With Letter of Medical Necessity
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Do I need to change my existing checkout or payments system?
No. Flex is designed to work with your existing stack—whether you’re on Shopify or using a custom ecommerce platform. Integration is fast and flexible.
How long does it take to get set up?
Most supplement brands can launch with Flex in less than a day. Our team provides hands-on support to guide integration, compliance, and launch best practices that are tailored to the supplement & nutrition industry’s needs.
Resources
Latest supplements news & insights
Get a Demo
Ready to accept supplements HSA/FSA payments?
Let us guide you through this process. Share a few details and our customer service specialist will reach out to you within 24 hours.