Seeking unique, documented-quality nutrition supplements?

Relentless Improvement® is a trusted, worldwide, internet distributor of unique high-quality nutritional products, vitamins, supplements, nootropics.

Documented-quality products like Phenibut (Vegi-Caps!), Galantamine (Vegi-Tabs!), Resveratrol (Vegi-Caps!), Piracetam (Vegi-Caps!), Oxiracetam, EgCG (Vegi-Caps!), Strontium Citrate, Centrophenoxine (Vegi-Caps!), Lithium Orotate (Vegi-Caps! and Idebenone (Vegi-Caps!).

Tightly focused on only the very best brands in the business: Relentless Improvement®, Advanced Orthomolecular Research, Geronova Research, Life Extension Foundation, Therabiotics and Vitamin Research Products.

Relentless Improvement® has earned a reputation as the world's "gold standard" source for unique nutritional supplements. And, unlike some sites, we don't just talk a good game...

Independent analytical testing is performed on all Relentless Improvement® brand supplements by FDA registered and inspected laboratories. The resulting Certificates of Analysis are public: "Certificates of Analysis". This documentation assures you the utmost in quality and purity.

Let's be blunt: Why would you risk your health to suppliers unwilling to document the integrity of their products? Don't stand for unsubstantiated label claims. The FDA does not test supplements, so you better do your homework.

Furthermore, our supplements are warehoused in carefully controlled conditions (some kept refrigerated or frozen) until shipment to you so that they are not degraded by heat, light and humidity.

Why choose Relentless Improvement?

  • Integrity, Honesty. World-wide reputation as one of the best in the business.
  • Relentless Improvement® brand products are documented quality.
  • Carefully chosen, best-in-the-world raw material suppliers.
  • A professional, easy and secure online purchase experience.
  • Wide selection, high fill rate. Save time with One-Stop Shopping.
  • Save money with automatic quantity discounts.
  • Access to effective products that are years ahead of the mainstream.
  • As a privately held company our focus is pleasing you, not shareholders.
  • We give back to the community. We sponsor and support The Methusalah Mouse Prize, betterhumans and Immortality Institute.

The items we carry are based on:

Safety - We do not offer any risky formulations or substances.

Efficacy - We stock effective supplements backed by solid research. Many product pages cite randomized, controlled, double blind human studies.

Quality - Relentless Improvement®, Geronova Research, AOR, and VRP provide high-quality, leading edge supplements and are highly respected companies. Relentless Improvement is especially known for its documented product quality.

Disclosure - We always indicate both the ingredient(s) and dose of every supplement that we offer.

Value - We offer science-based formulations in effective dosages. We do not offer products that have "window dressed" labels.

Price - We provide superior overall value, deep quantity discounts and keep shipping costs low.

Fun Facts

Relentless Improvement® LLC opened its virtual doors in January 2005 to fill a need for internet purchasing of superior-quality vitamins, and unique nutritional supplements. The owner, Pete Hitesman, is obsessive about providing an easy, safe internet transaction, fast shipping, and documented purity. He uses what he sells.

We are 100% internet sales, there are no physical stores for you to visit. Relentless Improvement brand products are only available for purchase through the RelentlessImprovement.com website.

We are the world's largest distributor of Geronova Research, and Advanced Orthomolecular Research products. We have product available for shipping when others don't. Our inventory turns over fast, assuring that you receive the freshest possible products.

We do not sell loose or bulk powders. There is no way to effectively assure the quality and purity of bulk powders. It is risky and a hassle for you to measure them out for dosing. Once opened to the air they usually degrade or clump up. Individual capsules in sealed bottles protect their contents.

The FDA does not allow us to diagnose, prescribe or make health claims. Please don't ask.

Documented quality, wide selection, high order fill, fast shipping, order tracking, professional ecommerce website. International specialist with pricing in 47 currencies and real-time international shipping rates.