
Niacinamide is HSA/FSA eligible once a clinician signs a Letter of Medical Necessity, and Caeli gets you one during checkout.
Checked against common benefit plans. Your employer's plan may differ.
Do you qualify?
- Metabolic & nutritional
- Bones, joints & muscles
Benefit-maxxing tips
Use FSA first — it expires. Leave HSA to grow.
About this product
Vitamin B3 that supports joints, skin, and the production of NAD+, the source of cellular energy*. Niacinamide provides antioxidant protection from daily encounters of oxidative stress, benefiting healthy skin and supporting the brain.*
Thorne's Niacinamide offers 500mg of non-flushing vitamin B3 in a clean cellulose capsule, with 180 servings stretching the $26 price thoughtfully. Third-party testing verifies label accuracy and screens for contaminants, while the yeast-free formula suits sensitive routines. It's a quietly versatile daily staple for skin, joint, and sleep support without the flush that turns people off standard niacin.
Quick facts
- Brand
- Thorne
- Category
- Vitamins & Supplements
- Concerns addressed
- Metabolic & Nutritional Support
- IRS classification
- Qualified medical expense (with an LMN)
- Caeli receipt vault
- Auto-saved for 7 years
- Sold by
- thorne.com
Eligibility & Coverage FAQs
Written by Caeli's benefits team. If we haven't answered your question, the extension's in-app chat is staffed by humans.
Can I buy the Niacinamide with my HSA or FSA?
What is a Letter of Medical Necessity (LMN), exactly?
What if I get audited?
Does my wellness stipend (LSA) cover this?
Does Caeli ever see my medical records?
More in Vitamins & Supplements

Nature Made
Skin Hydration + Ceramides Gummies
HSA/FSA with LMN$26.99

Hone
Mojo for Men
HSA/FSA with LMN$25

OLLY
Ultra Strength Brain Softgels
HSA/FSA with LMN$24.99

Perelel
Choline Boost
HSA/FSA with LMN$29.35

Momentous
100% Plant Protein 10-Travel Packs
HSA/FSA with LMN$29.99

Ritual
Natal Choline
HSA/FSA with LMN$32.95

Walgreens
Walgreens Chewable Vitamin C 500 mg Tablets (100 days) Natural Orange (Packaging May Vary), 100.0 ea
HSA/FSA with LMN$9.99

AG1
AG1: Next Gen Pouch
HSA/FSA with LMN$79



