Side-by-side comparisons for your decisions

Glycinate is best for sleep, anxiety, and muscle relaxation without GI effects. Citrate is best for constipation relief and general magnesium repletion. Both ha...

Ubiquinol absorbs 2-3x better than ubiquinone, especially in adults over 50. For most younger adults at standard doses, ubiquinone is sufficient and cheaper. Ub...

Both raise NAD+ levels with similar effect sizes in human trials. NR has more published clinical trials and a clearer regulatory status. NMN was reclassified by...

Ashwagandha is best for chronic stress, anxiety, and sleep — calming and grounding. Rhodiola is best for mental fatigue, burnout, and energy under stress — ener...

Both have antidepressant evidence comparable to mild SSRIs. Saffron has fewer drug interactions and a cleaner safety profile. St. John's Wort has more research ...

Alpha-GPC delivers more raw choline per dose — best for acute cognitive performance and physical performance (growth hormone effects). Citicoline provides cytid...

Both have mixed-to-modest evidence in osteoarthritis. Glucosamine sulfate (specifically the sulfate form) has slightly better evidence than chondroitin for mode...

Standard curcumin has poor bioavailability — most of it never reaches the bloodstream. Meriva (curcumin phytosome) achieves 29x higher absorption than standard ...

Citrulline raises arginine levels more effectively than oral arginine itself does — counterintuitive but consistent across trials. For pump, blood flow, ED, and...

Fish oil delivers both EPA and DHA at lower cost. Algal oil is typically DHA-dominant and vegan-friendly, with no fish farming concerns or ocean contamination. ...

Cyanocobalamin is cheaper, more stable, and works fine for the vast majority of people. Methylcobalamin is the active form, preferred for known MTHFR mutations,...

These aren't alternatives — they're complementary. Vitamin D enables calcium absorption; vitamin K2 directs that calcium to bones rather than arteries. Taking h...

These solve different sleep problems. Melatonin is for circadian timing — jet lag, shift work, delayed sleep phase. Magnesium is for nervous system arousal — ra...

Psyllium is the more powerful fiber with stronger cholesterol-lowering and stool-bulking effects, but causes gas and bloating in some people. Sunfiber (PHGG) is...

Whey is fast-digesting, ideal post-workout for rapid amino acid delivery and muscle protein synthesis. Casein is slow-digesting, ideal before bed or between mea...