About Leandoor
The supplements we’d actually take.
Leandoor started with a short list — the products we wanted on our own counters and couldn’t find without compromise. Eight foundational SKUs. One quality standard. Built to be used, not collected.
Focused
A short, intentional shelf. Eight products at launch — chosen because they earn daily use, not because they look good in a catalog.
Honest
Structure / function claims only. Real Supplement Facts on every PDP. No outcome promises, no fear-based marketing, no disease language.
Clean
Non-GMO and Gluten-Free, made in an FDA-registered, cGMP-compliant facility. Every batch tested for identity, potency, and purity.
Our mission
Less, but better.
Supplements are a noisy category. There are too many SKUs, too many claims, too many flavors of the month. Leandoor is deliberately the opposite — a small, well-designed shelf of products people actually use every day.
We started Leandoor because we wanted a supplement brand that read like one designed thing rather than a white-label catalog dump. Same label grid, same quality posture, same language on every product. Premium without the puffery.
Our reference points sit inside the category — Thorne, Momentous, Ritual — but we’re building something legally and visually distinct from any of them. Originality is a requirement, not a preference.
How we source & test.
01
Manufacturer-led formulation
We partner with manufacturers operating in FDA-registered facilities to current Good Manufacturing Practices (cGMP, 21 CFR Part 111). NSF-GMP registered. ISO 9001:2015 and ISO/IEC 17025:2017 accredited.
02
Per-batch testing
Identity, potency, and purity testing on every batch — including ICP-MS heavy-metal screening, microbiological testing, and physicochemical testing.
03
Claims review
Every claim on every PDP is reviewed against the substantiation file before it goes live. Structure / function language only. Asterisk + FDA disclaimer on every claim surface.
Read the full quality story on the Quality page.
- Lab-tested per batch
- cGMP-manufactured
- Non-GMO · Gluten-Free
- Real Supplement Facts
Get in touch.
Customer support: support@leandoor.com · Press & partnerships: hello@leandoor.com
Leandoor is operated by Slimdoor Limited LLC, 30 N Gould St Ste R Sheridan WY 82801.
Start your routine
Built to be used. Not collected.
Eight foundational supplements. One quality standard. Browse the line or pick a routine — both lead to the same shelf.