What is FitLine?
Everything You Need to Know
A no-fluff guide to PM-International’s supplement line — how the technology works, which products do what, and how to choose the right stack for your goals.
The Short Answer
FitLine is the supplement brand of PM-International AG, a German direct-sales company founded in 1991. All products are manufactured in Germany under GMP certification and the core range is listed on the Cologne List — the independent third-party testing standard used by professional athletes to verify supplements are free of banned substances.
What distinguishes FitLine from most supplement brands isn’t the ingredient list — it’s the delivery mechanism. The entire range is built around a proprietary technology called NTC (Nutrient Transport Concept), which addresses a problem most supplement companies quietly ignore: the gap between what’s on the label and what actually reaches your cells.
NTC Technology: What It Actually Does
Most supplements are formulated with one question in mind: what to put in. NTC was built around a different question: how to get it there. The concept operates across three stages.
Is NTC a marketing label? Partly. PM-International doesn’t publish independent pharmacokinetic data comparing their absorption rates to competitors. What is structurally sound is the underlying rationale — the form selection and ratio engineering are consistent with published literature on mineral and nutrient bioavailability. The mechanism is real; the magnitude of the claimed advantage is harder to verify independently.
The Products: What Each One Does
The FitLine range is built around a core daily stack called the Optimal Set, with additional products addressing specific goals. Here’s what each one is actually for:
The Optimal Set bundles either PowerCocktail + Restorate, or Basics + Activize + Restorate. Morning gut and energy support paired with evening mineral recovery — the two windows where supplementation has the clearest physiological rationale. Most people start with one set and adjust from there.
Who FitLine Is Actually For
How FitLine Compares to AG1
Ingredient transparency, price, bioavailability, and Cologne List certification
Common Questions
The Optimal Set covers most daily micronutrient requirements across vitamins, minerals, and trace elements — often at better bioavailability than standard multivitamin tablets. For the majority of people without specific clinical deficiencies, it’s a more complete solution than a conventional multivitamin.
No. The flush is a prostaglandin D2-mediated vasodilation response at skin capillaries — pharmacologically predictable, self-limiting, and not a sign of adverse reaction. It diminishes significantly with consistent daily use as GPR109A receptors downregulate. Taking Activize well diluted and after food reduces it substantially in the meantime.
Yes. The entire core range is Cologne List certified — independently tested for contamination with banned substances. This is the standard used by professional sports teams and anti-doping agencies to assess supplement safety for competition.
Activize effects (energy, focus) are noticeable from day one. Restorate sleep and recovery improvements typically appear within 1–2 weeks. Basics gut effects compound over 3–4 weeks of consistent use — it’s the slowest but in many ways the most foundational product in the range.
Most people on chronic medication can use FitLine products with simple timing adjustments. The most relevant interactions involve calcium with levothyroxine and certain antibiotics (separate by 2–4 hours), and niacin with statins at gram-level doses. At Activize’s niacin dose the statin interaction is clinically unlikely. When in doubt, a five-minute conversation with your prescribing physician resolves any uncertainty.
Don’t Just Buy FitLine.
Start It Right.
Most people buy supplements, use them inconsistently for a few weeks, and conclude they don’t work. The protocol matters as much as the product. If you register through this link, you get direct access to clinical advisory support — not a generic FAQ, not a chatbot.
// Registering through this link costs you nothing extra. Advisory support is included at no charge. I’ve been using these products personally since 2018 and have advised 500+ people on supplementation protocols.