Pay With Your HSA/FSA Card.

Gengyve has partnered with Flex to allow qualified customers to use their Health Savings Account (HSA) or Flexible Spending Account (FSA). This means you may be able to use your HSA or FSA debit card to buy any Gengyve eligible-products with pre-tax dollars, resulting in net savings of 30-40%.

What is a qualified customer? 

The IRS oversees HSA and FSA eligibility and dictates that a customer must have a medical condition or disease that they are seeking to treat or manage with Gengyve products. Customers must have documentation that confirms their eligibility, also called a Letter of Medical Necessity. Not to worry, Gengyve has partnered with Flex to make this a quick and easy process for customers.

How do I use my HSA/FSA to pay for Gengyve mouthwash? 

At checkout, select Flex | Pay with HSA/FSA as your payment option. You will be prompted to complete a brief telehealth consult to confirm your eligibility to pay with HSA/FSA. From there, enter your HSA or FSA debit card details and complete your checkout as usual. If you don’t have your HSA or FSA debit card handy, you can also complete the checkout with a regular credit or debit card.

How It Works

For One-Time Purchases

No need for a doctor’s visit—Flex enables a simple telehealth review after purchase. A new LOMN is required once per calendar year per IRS guidelines.

  • Select “Flex | Pay with HSA/FSA” at checkout

  • Confirm your eligibility

  • Enter your HSA or FSA debit card

  • Flex will email you

    An Itemized Receipt and a Letter of Medical Necessity (LOMN) within 24–48 hours
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FAQ

Can I use my HSA/FSA to pay for Gengyve mouthwash?

To use your HSA/FSA for Gengyve mouthwash, you must have a qualifying medical condition and a Letter of Medical Necessity (LOMN) from your healthcare provider. If you don’t have a LOMN, select "Flex | Pay with HSA/FSA" at checkout to complete a telehealth consultation for eligibility.

How do I use my HSA/FSA at checkout?

Choose the "Flex | Pay with HSA/FSA" option at checkout, complete the short telehealth evaluation if required, then enter your HSA/FSA card information to complete your purchase.

Will I receive a Letter of Medical Necessity and a receipt?

Yes. After your purchase, you will get an itemized receipt and a Letter of Medical Necessity emailed to you. Keep these for your records and any reimbursement needs.

Can I use my HSA/FSA for Gengyve mouthwash subscriptions?

Yes! Because Shopify does not currently allow third‑party payment methods to be used directly for subscription billing, you will need to pay for your Gengyve subscription with a regular credit or debit card at checkout. After you place your order, your Gengyve order confirmation page will include a link to submit your purchase through Flex for HSA/FSA reimbursement. Click that link to complete a brief eligibility consultation, receive the documentation you need, and then submit it to your HSA/FSA provider to request reimbursement for your Gengyve products.

What is Flex and what is their relationship with Gengyve?

Flex is a third-party platform that enables customers to use their Health Savings Account (HSA) or Flexible Spending Account (FSA) funds to pay for eligible health products. Gengyve partners with Flex to offer a streamlined and compliant way for customers to use their HSA/FSA cards at checkout. Flex also provides a telehealth consultation service to help customers obtain the required Letter of Medical Necessity for HSA/FSA eligibility.

What if I have questions about using my HSA/FSA?

Gengyve offers customer support to assist you with any questions about HSA/FSA eligibility or the payment process.