Evidence library
Supplement Topic Guides
Find the question closest to yours—from choosing a magnesium form to understanding a research peptide. These guides organize evidence, tradeoffs, safety context, and what remains uncertain.
Forms and formulas
Choose the right version
Use these when the ingredient is familiar but the form, dose, quality markers, or label is not.
B-Complex Vitamins
Compare the major B vitamins, common forms, and when supplementation is worth discussing.
Open guideCurcumin Absorption
Compare piperine, phytosome, and other formulation approaches.
Open guideElectrolyte Supplements
When electrolyte products may fit—and when water may be enough.
Open guideGreen Tea Extract and EGCG
Review extract dosing, evidence context, and high-dose safety concerns.
Open guideNAC and Glutathione
Understand how these related antioxidant pathways and supplements differ.
Open guideIron Supplements
Compare common forms and why testing matters before supplementing.
Open guideMagnesium Types Compared
Match glycinate, citrate, threonate, oxide, and other forms to practical tradeoffs.
Open guideOmega-3 Quality Guide
Read EPA/DHA labels, oil forms, oxidation signals, and quality markers.
Open guideProtein Powders Compared
Compare whey, casein, plant, and collagen products by use case.
Open guideVitamin D and K2
Review evidence, dosing context, and the rationale behind combining them.
Open guideZinc Supplements
Compare common forms, dosing context, and long-term safety considerations.
Open guideEveryday topics
Evaluate popular supplement categories
Evidence-first reviews for categories that attract strong marketing but still require careful product and goal matching.
Alkaloids on Amazon
Identify alkaloid supplement categories, separate evidence types, and screen labels without product endorsements.
Open guideApple Cider Vinegar
Separate evidence on blood sugar, weight, and digestion from trend claims.
Open guideBovine Colostrum
Review immune, gut, performance, and safety evidence behind the category.
Open guideCollagen Supplements
Compare evidence for skin, joints, bone, and muscle-related goals.
Open guideCoQ10
Understand ubiquinone, ubiquinol, and the conditions where CoQ10 is most discussed.
Open guideCreatine for Brain Health
Look beyond sports use to cognition, fatigue, and sleep-deprivation research.
Open guideFunctional Mushrooms Compared
Compare lion’s mane, reishi, cordyceps, and other mushroom categories.
Open guideGreens Powders
Assess nutrient-filling evidence and the limits of broad wellness claims.
Open guideLion’s Mane Mushroom
Review cognition, mood, mechanism, dosing, and evidence limitations.
Open guidePrebiotics
Compare supplemental fibers with food sources and goal-specific evidence.
Open guideProbiotic Strains
Choose by strain and use case instead of relying on CFU count alone.
Open guideGoals and routines
Start with the outcome or decision
Use these broader guides to compare options, plan a routine, or identify what should be checked first.
Adaptogens Compared
Compare ashwagandha, rhodiola, holy basil, eleuthero, and schisandra.
Open guideAnti-Inflammatory Supplements
Compare curcumin, omega-3, ginger, boswellia, and quercetin evidence.
Open guideBerberine and Weight Loss
Review clinical evidence, safety, and the limits of GLP-1 comparisons.
Open guideSupplements and Intermittent Fasting
Check which products may support a fast and which change its purpose.
Open guideMenopause Supplements
Compare evidence for common symptom-focused supplement options.
Open guideNMN Supplements
Review human evidence, safety, and the gap between NAD+ and lifespan claims.
Open guideNootropic Stacking
Build simpler combinations with mechanism, dosing, and interaction context.
Open guideSaffron and Mood
Review the mood evidence, safety context, and study limitations.
Open guideSleep Supplements
Compare melatonin, magnesium, L-theanine, glycine, valerian, and more.
Open guideSupplement Stacking Safety
Check serotonergic, sedative, stimulant, and metabolic interaction patterns.
Open guideBrain Fog and Fatigue
Start with likely causes and tradeoffs before choosing a supplement lane.
Open guideTestosterone Support Supplements
Review evidence for common ingredients and the limits of “booster” products.
Open guideAdvanced and harm reduction
Research higher-risk and regulated topics
Educational context for prescription-adjacent compounds, research peptides, withdrawal, and harm reduction—not a purchase or self-treatment list.
BPC-157
Review preclinical evidence, safety uncertainty, and current legal context.
Open guideCagriSema & Cagrilintide
Track the pending FDA review, peer-reviewed REDEFINE evidence, amylin/GLP-1 mechanism, and federal cagrilintide compounding prohibition.
Open guideCJC-1295
Understand the mechanism, research evidence, forms, and legal status.
Open guideGHK-Cu
Separate topical cosmetic evidence from injectable and research-only use.
Open guideNutrition and Supplements on GLP-1s
Review protein, hydration, and nutrient issues discussed with GLP-1 medications.
Open guideDipping Tobacco Alternatives
Compare replacement paths through a harm-reduction and cardiovascular lens.
Open guideIpamorelin
Review mechanism, evidence limits, safety, and current legal context.
Open guideKratom 7-OH Withdrawal
Evidence-informed harm reduction, symptom context, and routes to medical support.
Open guideMethylene Blue as a Nootropic
Separate tiny cognition evidence from MAO-A, serotonin, G6PD, and product-grade safety risks.
Open guideOrforglipron (Foundayo)
Track the 2026 oral small-molecule GLP-1 approval, pivotal weight-loss evidence, safety label, and maintenance data.
Open guidePsychedelic-Adjacent Herbs
Traditional and ritual botanicals viewed through a harm-reduction framework.
Open guidePT-141 (Bremelanotide)
Distinguish the approved indication from off-label and research-only use.
Open guideRetatrutide
Track the 2026 phase 3 triple-agonist results, investigational status, FDA compounding prohibition, and gray-market risk.
Open guideSemaglutide
Evidence, mechanism, side effects, and brand-versus-compounded context.
Open guideTB-500
Review repair research, evidence limits, safety, and legal status.
Open guideTirzepatide
Evidence, dual GIP/GLP-1 mechanism, side effects, and prescribing context.
Open guideMelatonin Dosing
Understand lower-dose evidence, timing, and common reasons for side effects.
Open guideEditorial reading context
How to read Supplement Topic Guides
Browse evidence-first guides on supplement forms, popular categories, goal-based routines, advanced compounds, and harm reduction. This guide is intended to help readers make sense of evidence, safety, and practical fit without turning supplement research into a one-size-fits-all checklist. Use it alongside the linked herb and compound profiles for deeper mechanism and safety details.
For Supplement Topic Guides, focus on whether the evidence matches the exact outcome you care about, whether the dose discussed is realistic, and whether the safety profile fits your medical context. Strong marketing language should carry less weight than human evidence and transparent product quality.
When a page discusses dependence-forming substances, restricted compounds, or high-risk contexts, treat it as harm-reduction education only. It is not a buying guide, dosing instruction, or substitute for professional care.