Quality & Testing

Every bottle we sell has a paper trail. Here's exactly how Selenewell products are made, tested, and verified — and how you can check for yourself.

A woman in her forties by a window, turning an unlabeled supplement jar in her hands to examine it

How our products are made

  • Manufactured in the USA in FDA-registered facilities, with domestic and globally sourced ingredients.
  • cGMP-compliant — current Good Manufacturing Practices, the FDA's quality standard for dietary supplements, covering identity, purity, strength, and composition.
  • Shipped from US warehouses — your order never crosses an ocean.

Testing and certificates

Every product batch is quality tested. A certificate of analysis (COA) — the document showing what's actually in the bottle — is available on request for any product you purchase: just email us your order number at selene@arteco-consulting.com and we'll send the COA for your batch.

Full-dose transparency

Every Selenewell label lists every active ingredient and its exact dose. If an ingredient is in the bottle, it's on the label — no "proprietary blends" that hide how much of anything you're getting.

One honest exception, and we would rather tell you than have you find it. Our Probiotic 40 Billion lists its four bacterial strains inside a blend, which is how essentially every probiotic on the market is labelled: live-organism counts are measured for the blend, not split per strain. What we do instead is name each strain down to its strain code — Lactobacillus acidophilus La-14, Bifidobacterium lactis Bl-04, Lactobacillus plantarum Lp-115 and Lactobacillus paracasei Lpc-37 — and print the total, 40 billion CFU per serving, along with the blend weight. Strain codes matter: research is run on specific strains, not on species, so naming them is what makes a probiotic checkable at all.

What supplements can and can't do

We're direct about this: dietary supplements support normal body functions — sleep, strength, balance, digestion. They are not medicines, and no supplement can diagnose, treat, cure, or prevent any disease. If you have a medical condition, are pregnant or nursing, or take medication, talk with your healthcare professional before starting any supplement. Read our full medical disclaimer.

Our guarantee

30-day returns on every order — see our refund policy. If something isn't right, we'll make it right.