Are Gruns, AG1 and Greens Powders HSA Eligible? (2026)

Short answer

Gruns, AG1, Bloom and other greens powders are not HSA or FSA eligible on a receipt. Your plan treats them the way it treats a multivitamin: general health, not medical care. They can qualify for reimbursement when a licensed clinician ties them to a condition you have (a lab-confirmed nutrient deficiency, a gut condition that affects absorption, recovery from surgery or illness) in a letter of medical necessity, and your plan accepts the letter. The plan decides. Nothing about the product itself changes that.

If that describes you, the path is: letter first, then buy the greens anywhere with any card, then Burst files the claim and your plan pays you from your account. The Burst letter is $35, refunded if the clinician declines or the plan denies. Request a letter for your greens.

Are Gruns FSA or HSA eligible?

Gruns gummies are a supplement, so they are not FSA or HSA eligible on their own, and swiping an HSA card on gruns.co or at Costco will decline. The gummy format doesn't change anything; a plan reviewer sees "daily greens" and moves on. What can change the outcome is a clinician's letter saying you take Gruns for a documented reason, attached to the claim.

Gruns has become the most-searched greens product for this question because of the price. A 28-pack pouch of the original low-sugar adult gummies is $66.65 one-time or $49.99 on subscription on gruns.co, and the sugar-free version is $73.32 or $54.99. Costco sells a 35-pack of Grüns Adult Greens Gummies for $31.99 to $39.99 depending on the warehouse, which is by far the cheapest way to buy them. Either way, that's $400 to $800 a year, which is real money to get back if you have a reason a clinician can document.

What a greens powder is to your plan

To your plan administrator, AG1 and Gruns and Bloom are supplements, full stop, and IRS Publication 502 says supplements taken for general health are not medical expenses. The reason they fall on the wrong side of the line is the reason people buy them: they're marketed as daily coverage for everyone, not treatment for anyone in particular.

The line moves when a clinician says your body has a specific need the product meets. The conditions clinicians most often document for a greens product are:

• A nutrient deficiency confirmed by labs (vitamin D, B12, iron, folate, magnesium) where a broad-spectrum product is part of the plan to correct it.

• A gut condition that limits absorption: IBS, Crohn's or ulcerative colitis, celiac disease, or the years after bariatric surgery.

• Recovery from an eating disorder, where a clinician wants dense nutrition in a form the person will take.

• A weakened immune system from treatment or a chronic condition, where a clinician has set a nutrition target.

What a clinician cannot document: "I don't eat enough vegetables," "energy," or "I want to feel better." Those are the reasons the products are sold, and they're the reasons a plan will deny. If that's your situation, a clinician won't write the letter, and Burst refunds the $35 automatically.

Greens powders compared: price per serving

These are the products people ask about most, priced from the brand sites and retailers in August 2026. Subscriptions are the price most people pay; one-time prices are shown so you can see the gap.

The brand doesn't affect eligibility. A $79 AG1 subscription and a $31.99 Costco pouch of Gruns are the same thing to a plan reviewer: a supplement that needs a letter. Pick the product on taste and price, not on which one "counts."

What the letter needs to say

A letter that holds up names three things: your condition, the product (or the category, "a daily greens supplement"), and the reason the product is part of managing the condition. Vague letters ("patient benefits from nutritional support") are the ones plans push back on. A letter that reads "Patient has lab-confirmed vitamin D and B12 deficiency secondary to celiac disease; a daily broad-spectrum greens and multivitamin supplement is recommended for 12 months" gives the reviewer nothing to argue with.

When you fill out the Burst intake, give the clinician what they need to write that sentence: the condition, when it was diagnosed, whether you've had labs, and what you've been told to do about it. The clinician writes the letter in their words, not yours, but they can only work with what you tell them.

What to keep so the claim goes through

Three things: the signed letter, the receipt, and (for subscriptions) each renewal receipt. Gruns, AG1 and Live it Up email a receipt for every shipment; keep them in one folder. Costco warehouse receipts abbreviate item names, so if you buy Gruns at Costco, hang onto the receipt with the line circled, or order through Costco.com so the confirmation email names the product.

Because Burst files the claim for you, you don't have to learn your administrator's portal. But if your plan ever asks why a greens supplement is on a claim, the answer is one sentence: "A licensed clinician documented this supplement for [condition]; the signed letter is attached to the claim."

The dollars, briefly: on AG1 at $79 a month, a year is $948. Reimbursed from an HSA or FSA at a combined 30 percent tax rate, that's about $284 back, minus the $35 letter. On Gruns from Costco at $35 a pouch, a year is about $420 and the savings are about $126 minus the letter. Both are worth doing if you have a documented reason.

How to get a letter for greens powder

1. Fill out the form at app.getburst.com/request-lmn. Under two minutes. Name the product (Gruns, AG1, Bloom, or "greens powder") and describe your condition and any labs.

2. Pay $35, about half a month of AG1. A licensed clinician looks at the condition and labs you described and decides whether a greens supplement belongs on a letter. If the clinician decides a letter isn't appropriate, you're refunded automatically.

3. The signed letter arrives by email, usually the same day. Then start or continue your subscription, or buy at Costco, with any card. Nothing changes at checkout.

4. Burst handles the claim. Your plan administrator then pays you from your HSA, FSA, or HRA by deposit or check, and a denial means your $35 comes back.

The letter typically covers 12 months of the same product, so monthly shipments keep riding on it until it's time to renew.

Frequently asked questions

Is AG1 HSA eligible?

Not on its own. AG1 is a supplement to your plan. It can qualify for reimbursement when a clinician ties it to a documented condition, and the plan makes the final call.

Can I pay for Gruns with my HSA card?

The card will decline on gruns.co and at Costco, because the product is coded as a supplement. Pay with any regular card and claim it with the letter attached.

Does the letter have to come before I subscribe?

The letter must be dated on or before the purchase it covers. Shipments you've already paid for can't be claimed; shipments after the letter date can. Get the letter, then start or continue the subscription.

Will a letter work for kids' Gruns?

The letter is written for the person taking the product, so a child's Gruns needs a letter for the child's condition. A parent's letter doesn't cover the family.

What if I already take a multivitamin too?

Same rules apply to both. Tell the clinician everything you take for the condition; they decide what belongs on the letter.

Does the plan always approve greens with a letter?

Your plan decides. Most accept a clear letter for a documented condition; if yours denies the claim, Burst refunds the $35.

Related reading: the brand-by-brand supplements guide, Is creatine HSA eligible?, HSA-eligible functional foods and hydration, and Can you use your HSA at Costco?