### Free Shipping
- Free shipping on orders over $40!

### HSA/FSA Benefits
- Tax-free with your HSA/FSA account

### Product Features
- fast–acting
- steady all-day support*
- third–party tested
- plant-powered
- Water-resistant
- hypoallergenic
- Made in the U.K.
- Micronized Ingredients
- M.H.R.A. registered
- sustainable & clean

### Checkout Process
1. **Check Out as a Guest:** If you’re logged into “Shop Pay,” select this option.
2. **Select HSA/FSA:** Choose the **Flex | Pay with HSA/FSA** option.
3. **Confirm Eligibility:** Confirm your eligibility.
4. **Enter Card Details:** Input your HSA/FSA card details.

**Note:** If you don’t have your HSA or FSA debit card, you can use a regular credit or debit card. Within 2 hours of your purchase, you will receive a Letter of Medical Necessity and an itemized receipt via email.

### Products
-   
**NAD+ Youth Repair**  
The IV-free way to support energy, recovery, and longevity.*  
**Starting from $14.38**  
[Add to Cart](/content/products/nad-plus-youth-repair-patch/index.html)

-   
**Hello Sunshine**  
Vitamins D3 and K2—essentials for supporting mood, energy, and bone health.*  
**Starting from $10.38**  
[Add to Cart](/content/products/hello-sunshine-vitamin-d-patch/index.html)

-   
**Energy Boost**  
Stick on support for energy production and mental clarity.*  
**Starting from $10.38**  
[Add to Cart](/content/products/energy-boost-vitamin-b12-patch/index.html)

- Add more products as per the previous format...

### Flex and HSA/FSA Relationship
- barrière has partnered with Flex to allow you to use your HSA or FSA debit card to buy physician-formulated supplements.

### FAQs
**HSA/FSA Card Usage:**
- To use your card, add products to your cart, select “Flex | Pay with HSA/FSA” at checkout, enter your card info, and complete your checkout.

**No HSA/FSA Card Available?**
- Select “Flex | Pay with HSA/FSA” during checkout, enter your credit card if you don't have your debit card.

**Declined Transactions:**
- Ensure you have sufficient funds, contact your HSA/FSA administrator if needed.

**Emily Updates or Corrections:**
- For corrections to letters or documentation, contact Flex support.

### Final Notes
Keep your Letter of Medical Necessity on file for at least three years and check with your HSA/FSA provider prior to purchases for eligibility.