You're not being paranoid. The label won't tell you, the price doesn't prove it, and the brand is guessing too. We'll help you tell what's real — form by form, factor by factor.
Whether a supplement is worth taking comes down to four things lining up at once: a form your body can absorb, a dose the research actually used, clean ingredients, and testing that stands behind them. Most bottles miss at least one. These pages show you how to check — for any supplement, not just ours.
Every factor has a science and a standard — these pages walk through both, so you can evaluate anything you take against what the research actually shows.
Start where you're stuck:
240+
Ingredients
With absorption grades and research-backed dosing ranges
500+
Form Comparisons
Head-to-head breakdowns of competing supplement forms
0–100
Absorption Grade
Every supplement form scored 0–100 for absorption quality — so you see exactly what you're getting, not marketing claims.
Plain-language explanations of the pharmacokinetic principles that determine whether what you take actually reaches your cells.
Mineral supplements are sold as chemical salts. The milligrams on the label measure the salt — not the element, and not what your body absorbs. A plain-language guide to elemental density, gut absorption, and why the same number can mean very different things.
Bioavailability is the fraction of a supplement that actually reaches your bloodstream. It varies up to 90x across forms — and no label is required to tell you the number.
Three barriers in your gut determine whether a supplement reaches your blood. Form-specific dissolution, transporter access, and gut pH can each reduce absorption to near zero.
Most supplement labels carry a single dose for every adult on Earth. Decades of pharmacokinetic research show that the same supplement, at the same dose, can produce blood levels that differ by a factor of ten or more between individuals. A plain-language guide to why one-size-fits-all dosing fails — and what the research says about the variables that matter.
Third-party certifications, Certificates of Analysis, FDA regulations, and the manufacturing standards that separate A-rated facilities from the rest.
The two things that determine supplement quality are the molecular form of each ingredient and the manufacturing standar…
GMP is the baseline manufacturing standard required by law. USP and NSF are voluntary third-party certifications that go…
A Certificate of Analysis is a document issued by a laboratory that records the test results for a specific batch or lot…
FormulaForge supplements are manufactured in NSF/ANSI 455-2 certified, A+ rated facilities in Sisters, Oregon. Every ing…
Pick the highest-scoring form for each ingredient, compare your options side-by-side, and explore the research behind every recommendation.
Full breakdowns of the most researched ingredients — mechanisms, forms, dosing, and what the evidence actually says.
The most commonly combined ingredients from real supplement product data.
Find the best-absorbed forms for your specific health priorities.
Research-backed supplements that may support a healthy stress response and calm.
Science-backed supplements that may support healthy sleep quality and relaxation.
Mitochondrial and nutritional support ingredients that may support healthy energy levels.
Research-backed supplements that may support healthy immune function.
Science-backed supplements that may support healthy cardiovascular function.
Research-backed nootropic supplements that may support memory, focus, and mental clarity.
Science-backed supplements that may support healthy muscle recovery and repair.
Research-backed supplements that may support healthy athletic performance and endurance.
Science-backed supplements that may support a healthy inflammatory response.
Research-backed supplements that may support healthy mood and emotional well-being.
Science-backed supplements that may support healthy bone density and strength.
Research-backed supplements that may support long-term brain health, memory, and neuroprotection.
Research-backed supplements studied for cellular longevity and healthy aging.
Research-backed supplements studied for healthy metabolic function and lean mass during weight change.
Research-backed supplements that may support a healthy stress response and calm.
Research-backed supplements that may support healthy focus, attention, and mental clarity.
Research-backed supplements that may support healthy energy and reduce everyday tiredness.
Research-backed supplements that may support healthy skin, hair, and nails.
Research-backed supplements that may support healthy digestion and gut function.
Research-backed supplements that may support healthy joint comfort, mobility, and connective-tissue structure.
Research-backed supplements that may support healthy vision and eye health.
Research-backed supplements that may support healthy liver function.
Research-backed supplements that may support healthy blood sugar already within the normal range and healthy glucose metabolism.
Research-backed supplements that may support healthy hormonal balance and well-being.
Research-backed supplements that may support men's daily vitality, stamina, and well-being.
Research-backed supplements that may support women's daily wellness, energy, and nutritional status.
Research-backed supplements studied for healthy metabolic function and the body's natural appetite and satiety signaling.
Detailed breakdowns for every ingredient: available forms, absorption grades, and research-backed dosing ranges.
See how popular supplements score against FormulaForge standards — and find out which ingredients in your current products have higher-absorption alternatives.
Build a personalized supplement formula using the research-backed forms from our ingredient library.
Build My Formula10 ingredients · 22 caps/day
See formula →Cognitive Starter Formula9 ingredients · 20 caps/day
See formula →Women's Health Starter Formula8 ingredients · 14 caps/day
See formula →FormulaForge formulates and sells supplements containing the ingredients discussed on this page. Our formulary recommendations are based on peer-reviewed bioavailability research. All cited studies are independently verifiable.