Frequently asked questions

Start from the nutrients your meals may miss. Pick one goal, then begin with the 1–2 highest-priority (core) categories from the quiz or the goal planner — it's easier to sustain and avoids overlap.

There's no fixed limit, but more products means more chance of overlap. Check that the same nutrient (e.g. a multivitamin plus a single vitamin) doesn't stack up. When unsure, ask a pharmacist.

Food comes first. Supplements are exactly that — a top-up. There's no need to add a nutrient you already get enough of. Review your diet first, then fill the likely gaps.

It varies a lot by nutrient and goal, and many supplements aren't meant to produce a noticeable feeling — filling a gap isn't the same as a sensation. If problems persist after several weeks, consider seeing a professional.

Follow the product label first. Our goal plans show common ranges based on public reference values and labeling as a guide, but the right amount for you depends on body size, diet and health. If you have a condition or take medicine, ask a professional.

No. Many nutrients have an upper limit, and excess can burden the body or cause harm. Iron, zinc and fat-soluble vitamins (A, D, E) especially warrant care. Stay within the labeled amount and upper-intake guidance.

It depends. Fat-soluble vitamin D, fish oil and CoQ10 suit mealtimes; many take magnesium in the evening and B-vitamins during the day. Mostly, pick a time you can keep to and follow the label.

Fat-soluble nutrients (vitamins D, E, K, fish oil, CoQ10) absorb better with food. Zinc and magnesium can upset an empty stomach, so with food is easier. Iron absorbs better on an empty stomach but may cause discomfort.

Just take one dose when you remember — there's no need to double up. Consistency over time matters more, so focus on a routine you can keep.

Don't combine on your own judgment — check with a physician or pharmacist. Vitamin K, fish oil and CoQ10, for example, can interact with blood-related medicines. Showing your medication list is the safest approach.

Needs and cautions change during pregnancy and breastfeeding (folate is often recommended, while excess vitamin A needs care). Always decide with your doctor or midwife first. This service does not provide diagnosis.

Stop taking it first, and see a healthcare provider if symptoms are strong or persistent. Stomach upset can ease by taking it with food or lowering the amount. Noting what you took helps any consultation.

Children's needs differ greatly from adults', and some ingredients aren't suitable. Consult a pediatrician and use products labeled for the child's age, exactly as directed. Our information is oriented to adults.

Look at the active amount per serving, days per container, cost per day, format (pills/powder), allergens and evidence strength. Our comparison and product pages line these up side by side.

Read each ingredient's amount and role separately. On mixed-product pages we break down the amount and benefit of each component. Also watch totals so you don't double up the same ingredient from another product.

Raw-material quality, the amount and form of actives, manufacturing and testing, taste and brand all affect price. Pricier isn't automatically better for you — compare by active amount and cost per serving.

Yes. From a goal plan or your quiz result, use "Save list" to store the prioritized set in your browser. You can revisit it later from the Saved page and compare sample products.

Packs are educational templates grouped by goal — handy as a model. Actual purchases are made per item via affiliate links. If you only want specific items, buying individually fits better.

In development we show sample data. Prices and availability change — please check the retailer's site for current information.

Our editorial team writes it citing public agencies and systematic reviews, with review dates shown. AI-generated content is treated as a draft and reviewed before publishing. We separate marketing claims from evidence.

We may earn a commission when you buy via affiliate links to retailers. Commissions do not influence our evidence ratings or editorial conclusions. We do not sell supplements directly.

Needs vary by body size and activity. Base intake on food first and use products to fill gaps, following the label. For specific amounts, ask a professional.

If your meals provide enough, protein powder isn't required. Think of it as a convenient top-up when time or intake is short.

It's well studied and generally well tolerated in healthy adults. Consult a physician if you have kidney disease, and stay hydrated.

Magnesium is an essential mineral but does not treat sleep problems. Some use it as part of an evening routine. See a physician if issues persist.

Many take it with a meal; taking it with food can reduce fishy burps. Follow the labeled serving.

Those who spend much time indoors or in low-sun seasons may watch it. If unsure, you can ask a healthcare provider.

Not required if your diet is balanced. Some use it as a base when concerned about gaps. Watch overlap with other supplements.

Packs are educational templates, not sold directly by us. You can buy each item via affiliate links at retailers.

No. This is general education and information, not intended to diagnose, treat or prevent disease. Consult a physician or pharmacist for health decisions.