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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0, viewport-fit=cover">
<title>Build my stack — a 5-question supplement planner</title>
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<meta name="description" content="Answer 5 questions about your goals, sex, age, current medications, and budget. Get a ranked, evidence-tiered supplement plan with estimated monthly cost.">
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<body>
<main class="bm-wrap">
<a href="index.html" class="bm-back">
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Back to Supplement Score
</a>
<div class="bm-kicker">Build my stack</div>
<h1>A 5-question supplement planner</h1>
<p class="bm-lede">Five short questions get you to a ranked, evidence-tiered supplement plan with estimated monthly cost. Nothing leaves your browser. This is a starting point for research, not a treatment plan — discuss any change with your clinician.</p>
<div id="bm-wizard">
<div class="bm-progress" aria-hidden="true">
<div class="bm-prog-dot active" data-prog="1"></div>
<div class="bm-prog-dot" data-prog="2"></div>
<div class="bm-prog-dot" data-prog="3"></div>
<div class="bm-prog-dot" data-prog="4"></div>
<div class="bm-prog-dot" data-prog="5"></div>
</div>
<!-- Step 1: Goals -->
<div class="bm-step active" data-step="1">
<div class="bm-step-h">Step 1 of 5</div>
<h2 class="bm-step-q">What do you want to work on?</h2>
<p class="bm-step-help">Pick 1 to 3 goals. We'll rank supplements that have actual trial evidence for those specific outcomes.</p>
<div class="bm-opts cols-2" id="bm-goals">
<button type="button" class="bm-opt" data-goal="Sleep">Sleep</button>
<button type="button" class="bm-opt" data-goal="Anxiety">Anxiety / stress</button>
<button type="button" class="bm-opt" data-goal="Mood">Mood</button>
<button type="button" class="bm-opt" data-goal="Cognition">Memory / focus</button>
<button type="button" class="bm-opt" data-goal="Cardio">Cardiovascular</button>
<button type="button" class="bm-opt" data-goal="Glucose">Blood sugar</button>
<button type="button" class="bm-opt" data-goal="Joint">Joint / pain</button>
<button type="button" class="bm-opt" data-goal="Gut">Gut / digestion</button>
<button type="button" class="bm-opt" data-goal="Immunity">Immunity</button>
<button type="button" class="bm-opt" data-goal="Skin">Skin / hair / nails</button>
<button type="button" class="bm-opt" data-goal="Energy">Energy / fatigue</button>
<button type="button" class="bm-opt" data-goal="Performance">Athletic performance</button>
<button type="button" class="bm-opt" data-goal="Bone">Bone / calcium</button>
<button type="button" class="bm-opt" data-goal="Hormone">Hormonal balance</button>
<button type="button" class="bm-opt" data-goal="Liver">Liver</button>
<button type="button" class="bm-opt" data-goal="Eye">Eye / vision</button>
</div>
</div>
<!-- Step 2: Sex -->
<div class="bm-step" data-step="2">
<div class="bm-step-h">Step 2 of 5</div>
<h2 class="bm-step-q">Which best describes you?</h2>
<p class="bm-step-help">Some supplements have specific contraindications in pregnancy or are sex-dependent in dosing. We use this to filter the recommendations.</p>
<div class="bm-opts" id="bm-sex">
<button type="button" class="bm-opt" data-sex="m">Male</button>
<button type="button" class="bm-opt" data-sex="f">Female</button>
<button type="button" class="bm-opt" data-sex="fp">Female · pregnant or trying</button>
<button type="button" class="bm-opt" data-sex="x">Prefer not to say</button>
</div>
</div>
<!-- Step 3: Age -->
<div class="bm-step" data-step="3">
<div class="bm-step-h">Step 3 of 5</div>
<h2 class="bm-step-q">What's your age range?</h2>
<p class="bm-step-help">Several recommendations shift meaningfully with age — vitamin D, B12, magnesium, and creatine in particular.</p>
<div class="bm-opts cols-2" id="bm-age">
<button type="button" class="bm-opt" data-age="under25">Under 25</button>
<button type="button" class="bm-opt" data-age="25-39">25 to 39</button>
<button type="button" class="bm-opt" data-age="40-54">40 to 54</button>
<button type="button" class="bm-opt" data-age="55-69">55 to 69</button>
<button type="button" class="bm-opt" data-age="70plus">70 and over</button>
</div>
</div>
<!-- Step 4: Medications -->
<div class="bm-step" data-step="4">
<div class="bm-step-h">Step 4 of 5</div>
<h2 class="bm-step-q">Are you on any prescription medications?</h2>
<p class="bm-step-help">We use this to flag interactions and exclude supplements that are problematic alongside your current treatment. Pick all that apply, or pick "None."</p>
<div class="bm-opts cols-2" id="bm-meds">
<button type="button" class="bm-opt" data-med="none">None</button>
<button type="button" class="bm-opt" data-med="warfarin">Warfarin</button>
<button type="button" class="bm-opt" data-med="doac">DOAC (apixaban, rivaroxaban, etc.)</button>
<button type="button" class="bm-opt" data-med="ssri">SSRI / SNRI</button>
<button type="button" class="bm-opt" data-med="statin">Statin</button>
<button type="button" class="bm-opt" data-med="thyroid">Levothyroxine</button>
<button type="button" class="bm-opt" data-med="bp">Blood-pressure medication</button>
<button type="button" class="bm-opt" data-med="diabetes">Metformin / diabetes medication</button>
<button type="button" class="bm-opt" data-med="immunosuppressant">Immunosuppressant (transplant)</button>
<button type="button" class="bm-opt" data-med="other">Other (we'll show all warnings)</button>
</div>
</div>
<!-- Step 5: Budget -->
<div class="bm-step" data-step="5">
<div class="bm-step-h">Step 5 of 5</div>
<h2 class="bm-step-q">Monthly supplement budget?</h2>
<p class="bm-step-help">We rank within budget — same evidence-tier ordering, but trimming to what you can actually sustain. Most foundational stacks fit under $40 a month.</p>
<div class="bm-opts cols-2" id="bm-budget">
<button type="button" class="bm-opt" data-budget="20">Under $20</button>
<button type="button" class="bm-opt" data-budget="40">$20 to $40</button>
<button type="button" class="bm-opt" data-budget="80">$40 to $80</button>
<button type="button" class="bm-opt" data-budget="999">$80 or more</button>
</div>
</div>
<div class="bm-actions">
<button type="button" class="bm-btn bm-btn-prev" id="bm-prev" disabled>← Back</button>
<button type="button" class="bm-btn bm-btn-next" id="bm-next" disabled>Next →</button>
</div>
</div>
<div class="bm-results" id="bm-results">
<h2 class="bm-step-q" style="margin-bottom:14px">Your starter stack</h2>
<div id="bm-result-summary"></div>
<div id="bm-result-warnings"></div>
<div id="bm-result-list"></div>
<div class="bm-restart">
<button type="button" class="bm-btn bm-btn-prev" onclick="restartWizard()">Start over</button>
</div>
</div>
<p class="bm-disclaim">Educational reference, not medical advice. Discuss any supplement change with a qualified clinician — especially in pregnancy, with prescription medications, or in pediatric use. <a href="about.html" style="color:inherit;text-decoration:underline">How scores work</a> · <a href="about.html#funding" style="color:inherit;text-decoration:underline">Funder policy</a></p>
</main>
<script src="data.js?v=20260504a"></script>
<script>
(function(){
// ── Wizard state ─────────────────────────────────────────────────────
var state = { step:1, goals:new Set(), sex:null, age:null, meds:new Set(), budget:null };
var GOAL_KEYS = {
Sleep:['sleep','insomnia'],
Anxiety:['anxiety','stress','adapt'],
Mood:['mood','depress','antidepres'],
Cognition:['cognit','memory','focus','nootropic','attention','brain'],
Cardio:['cardiov','heart','blood pressure','cholesterol','lipid'],
Glucose:['glucose','insulin','metabolic','diabet','a1c'],
Joint:['joint','pain','arthri','inflamm'],
Gut:['gut','digest','probiotic','ibs','prebiot','fiber','fibre'],
Immunity:['immun','cold','flu','antiviral'],
Skin:['skin','hair','nail','collag','derma'],
Energy:['energy','fatigu','endurance','stamina','vitality'],
Performance:['performance','muscle','strength','recovery','sarcopen','hypertroph'],
Bone:['bone','osteo','fracture','calcium'],
Hormone:['hormonal','testosterone','estrogen','menopau','pms','menstru','thyroid'],
Liver:['liver','hepatic','detox','nafld'],
Eye:['eye','vision','macular','retina']
};
// Estimated monthly cost per supplement tier (rough, used for budget filter)
// c sub-score 1=poor value (~$30-50/mo), 2=expensive (~$20-40), 3=moderate (~$15-25), 4=affordable (~$8-15), 5=excellent value (~$3-10)
var COST_BAND = { 5:6, 4:11, 3:18, 2:28, 1:42 };
// Med-keyed avoid lists — supplements that should be excluded outright for that medication
var MED_AVOID = {
warfarin: ['vitamin k','st john','garlic (high','ginkgo','fish oil (>3','coq10','cranberry'],
doac: ['st john','ginkgo','garlic (high','dabigatran','fish oil (>3'],
ssri: ['st john','5-htp','l-tryptophan','tryptophan','same','saffron'],
statin: ['red yeast rice','grapefruit'],
thyroid: [],
bp: ['licorice','yohimbine'],
diabetes: [],
immunosuppressant:['st john','grapefruit','berberine','echinacea','schisandra'],
other: []
};
// Med-keyed warning text shown above the recommendations
var MED_WARN = {
warfarin:'Warfarin chosen — your supplement list excludes vitamin K, St John\'s wort, ginkgo, high-dose fish oil, CoQ10, and cranberry, which are the highest-impact warfarin-supplement interactions.',
doac:'DOAC chosen — your list excludes St John\'s wort and ginkgo. Note: unlike warfarin, vitamin K does not interact with DOACs.',
ssri:'SSRI / SNRI chosen — supplements with serotonergic activity (5-HTP, L-tryptophan, SAMe, St John\'s wort, saffron) are excluded. Talk to your prescriber before adding any mood-targeting supplement.',
statin:'Statin chosen — red yeast rice (additive statin exposure) and grapefruit-rich items are excluded. Mention any new supplement to your pharmacist.',
thyroid:'Levothyroxine chosen — calcium, iron, and magnesium are kept in your list but should be taken at least 4 hours apart from your levothyroxine dose. Pause biotin 48-72h before any thyroid lab.',
bp:'Blood-pressure medication chosen — licorice (with glycyrrhizin) and yohimbine are excluded.',
diabetes:'Antidiabetic medication chosen — supplements with glucose-lowering effects (berberine, inositol, alpha-lipoic acid, cinnamon) are kept but flagged. Monitor glucose and discuss with your prescriber to avoid hypoglycaemia.',
immunosuppressant:'Immunosuppressant chosen — St John\'s wort, berberine, grapefruit, echinacea, and schisandra are excluded. Discuss every supplement with your transplant team.',
other:'You picked "other" — we\'re showing the full standard list. Always cross-check any supplement against your specific prescriptions with a pharmacist.'
};
// ── DOM helpers ──────────────────────────────────────────────────────
function $(id){return document.getElementById(id);}
function $$(sel,p){return Array.prototype.slice.call((p||document).querySelectorAll(sel));}
function calcScore(s){var rd=s.r||1,so=s.o||1,sco=s.c||1,sd=s.d||1;return Math.round(s.e*7+s.s*4+rd*3+so*2+sco*2+sd*2);}
function escHtml(s){return String(s==null?'':s).replace(/[&<>"']/g,function(c){return ({'&':'&','<':'<','>':'>','"':'"',"'":'''})[c];});}
// ── Wizard navigation ────────────────────────────────────────────────
function setStep(n){
state.step = n;
$$('.bm-step').forEach(function(el){ el.classList.toggle('active', +el.dataset.step === n); });
$$('.bm-prog-dot').forEach(function(el){
var p = +el.dataset.prog;
el.classList.toggle('active', p === n);
el.classList.toggle('done', p < n);
});
$('bm-prev').disabled = n === 1;
updateNextButton();
}
function canAdvance(){
if (state.step === 1) return state.goals.size >= 1 && state.goals.size <= 3;
if (state.step === 2) return !!state.sex;
if (state.step === 3) return !!state.age;
if (state.step === 4) return state.meds.size >= 1;
if (state.step === 5) return !!state.budget;
return false;
}
function updateNextButton(){
var nx = $('bm-next');
nx.disabled = !canAdvance();
nx.textContent = state.step === 5 ? 'Build my stack →' : 'Next →';
}
// Multi-select for goals; single-select for sex / age / budget; multi for meds (with "none" mutex)
$('bm-goals').addEventListener('click', function(e){
var b = e.target.closest('[data-goal]');
if (!b) return;
var g = b.dataset.goal;
if (state.goals.has(g)) { state.goals.delete(g); b.classList.remove('on'); }
else if (state.goals.size < 3) { state.goals.add(g); b.classList.add('on'); }
updateNextButton();
});
$('bm-sex').addEventListener('click', function(e){
var b = e.target.closest('[data-sex]');
if (!b) return;
state.sex = b.dataset.sex;
$$('#bm-sex .bm-opt').forEach(function(x){ x.classList.toggle('on', x.dataset.sex === state.sex); });
updateNextButton();
});
$('bm-age').addEventListener('click', function(e){
var b = e.target.closest('[data-age]');
if (!b) return;
state.age = b.dataset.age;
$$('#bm-age .bm-opt').forEach(function(x){ x.classList.toggle('on', x.dataset.age === state.age); });
updateNextButton();
});
$('bm-meds').addEventListener('click', function(e){
var b = e.target.closest('[data-med]');
if (!b) return;
var m = b.dataset.med;
if (m === 'none') {
// Mutex: clear all others
state.meds.clear(); state.meds.add('none');
$$('#bm-meds .bm-opt').forEach(function(x){ x.classList.toggle('on', x.dataset.med === 'none'); });
} else {
// If user picks anything, remove "none"
state.meds.delete('none');
$$('#bm-meds .bm-opt[data-med="none"]').forEach(function(x){ x.classList.remove('on'); });
if (state.meds.has(m)) { state.meds.delete(m); b.classList.remove('on'); }
else { state.meds.add(m); b.classList.add('on'); }
}
updateNextButton();
});
$('bm-budget').addEventListener('click', function(e){
var b = e.target.closest('[data-budget]');
if (!b) return;
state.budget = +b.dataset.budget;
$$('#bm-budget .bm-opt').forEach(function(x){ x.classList.toggle('on', +x.dataset.budget === state.budget); });
updateNextButton();
});
$('bm-prev').addEventListener('click', function(){ if (state.step > 1) setStep(state.step - 1); });
$('bm-next').addEventListener('click', function(){
if (!canAdvance()) return;
if (state.step < 5) setStep(state.step + 1);
else buildResults();
});
// ── Results builder ──────────────────────────────────────────────────
function buildResults(){
if (typeof S === 'undefined') {
$('bm-result-summary').innerHTML = '<div class="bm-warning">Database not loaded. Please refresh the page.</div>';
$('bm-wizard').style.display = 'none';
$('bm-results').classList.add('show');
return;
}
// Filter by goals
var goalKeys = [];
state.goals.forEach(function(g){ (GOAL_KEYS[g] || []).forEach(function(k){ goalKeys.push(k); }); });
var matched = S.filter(function(s){
var hay = ((s.tag || '') + ' ' + (s.desc || '')).toLowerCase();
return goalKeys.some(function(k){ return hay.indexOf(k) !== -1; });
});
// Exclude tier-4 unconditionally
matched = matched.filter(function(s){ return s.t !== 't4'; });
// Pregnancy: exclude common contraindications
if (state.sex === 'fp') {
var pregAvoid = ['ashwagandha','vitamin a','high','dha','vitex','licorice','black cohosh','dong quai','blue cohosh','pennyroyal','wormwood','rosemary (medicinal','high-dose vitamin','berberine','ho-shou-wu','tongkat ali'];
matched = matched.filter(function(s){
var n = (s.n || '').toLowerCase();
return !pregAvoid.some(function(p){ return n.indexOf(p) !== -1; });
});
}
// Medication exclusions
var medAvoid = [];
state.meds.forEach(function(m){ if (m !== 'none') (MED_AVOID[m] || []).forEach(function(x){ medAvoid.push(x); }); });
if (medAvoid.length) {
matched = matched.filter(function(s){
var n = (s.n || '').toLowerCase();
return !medAvoid.some(function(p){ return n.indexOf(p) !== -1; });
});
}
// Add composite score
matched.forEach(function(s){ s._sc = calcScore(s); });
// Sort: tier first (t1 → t2 → t3), then composite
var tierOrder = { t1:0, t2:1, t3:2 };
matched.sort(function(a,b){
var ta = tierOrder[a.t]; var tb = tierOrder[b.t];
if (ta !== tb) return ta - tb;
return b._sc - a._sc;
});
// De-dupe: one supplement per "core ingredient" (rough — by first word of name)
var seen = {};
matched = matched.filter(function(s){
var key = (s.n || '').toLowerCase().split(' ')[0];
if (seen[key]) return false;
seen[key] = true;
return true;
});
// Trim by budget — greedy fit
var budgetCap = state.budget;
var picked = [];
var totalCost = 0;
for (var i = 0; i < matched.length && picked.length < 12; i++) {
var s = matched[i];
var cost = COST_BAND[s.c || 3] || 18;
if (totalCost + cost <= budgetCap) {
picked.push(s);
totalCost += cost;
}
}
// If budget squeeze yielded < 3 items, fall back to top 5 regardless of budget
if (picked.length < 3) {
picked = matched.slice(0, 5);
totalCost = picked.reduce(function(sum, s){ return sum + (COST_BAND[s.c || 3] || 18); }, 0);
}
// Render summary
var goalLbl = Array.from(state.goals).join(' · ');
$('bm-result-summary').innerHTML =
'<div class="bm-result-summary">'
+ '<strong>Built for:</strong> ' + escHtml(goalLbl) + '. '
+ picked.length + ' supplements ranked by tier and composite score, fitted to your budget.'
+ '</div>'
+ '<div>'
+ '<span class="bm-cost-pill"><span class="lbl">Estimated monthly cost</span><span class="val">~$' + totalCost + '</span></span>'
+ '<span class="bm-cost-pill"><span class="lbl">Your budget</span><span class="val">' + (state.budget === 999 ? '$80+' : 'up to $' + state.budget) + '</span></span>'
+ '</div>';
// Render warnings — one block per medication chosen (excluding "none")
var warnHtml = '';
state.meds.forEach(function(m){
if (m !== 'none' && MED_WARN[m]) {
warnHtml += '<div class="bm-warning"><strong>⚠︎</strong> ' + MED_WARN[m] + '</div>';
}
});
if (state.sex === 'fp') {
warnHtml += '<div class="bm-warning"><strong>⚠︎</strong> Pregnancy / trying-to-conceive — supplements with insufficient pregnancy safety data have been excluded. The list below is conservative; always confirm any supplement with your OB.</div>';
}
$('bm-result-warnings').innerHTML = warnHtml;
// Render list
var listHtml = picked.map(function(s){
var bg = s._sc >= 72 ? 't1' : s._sc >= 60 ? 't2' : 't3';
var tierLbl = s.t === 't1' ? 'Tier 1' : s.t === 't2' ? 'Tier 2' : 'Tier 3';
var url = 'supplement.html?n=' + encodeURIComponent(s.n);
return '<div class="bm-rec">'
+ '<div class="bm-rec-score ' + bg + '">' + s._sc + '</div>'
+ '<div class="bm-rec-body">'
+ '<div class="bm-rec-name"><a href="' + url + '">' + escHtml(s.n) + '</a></div>'
+ '<div class="bm-rec-meta">' + escHtml(s.tag || '') + '</div>'
+ '<div class="bm-rec-dose">' + escHtml(s.dose || '') + '</div>'
+ '</div>'
+ '<span class="bm-rec-tier ' + s.t + '">' + tierLbl + '</span>'
+ '</div>';
}).join('');
if (!picked.length) {
listHtml = '<div class="bm-warning">No supplements matched your filters. Try widening your budget or removing a goal.</div>';
}
$('bm-result-list').innerHTML = listHtml;
// Show results
$('bm-wizard').style.display = 'none';
$('bm-results').classList.add('show');
window.scrollTo({ top: 0, behavior: 'smooth' });
}
window.restartWizard = function(){
state = { step:1, goals:new Set(), sex:null, age:null, meds:new Set(), budget:null };
$$('.bm-opt.on').forEach(function(x){ x.classList.remove('on'); });
$('bm-results').classList.remove('show');
$('bm-wizard').style.display = 'block';
setStep(1);
window.scrollTo({ top: 0, behavior: 'smooth' });
};
// Initial state
setStep(1);
})();
</script>
</body>
</html>