All guides
Make sense of supplement labels and prices with ingredient guides, cost-per-serving calculators and a practical checklist for more informed US shopping.
Read the label
- Ingredient amounts: compare mg, mcg and grams without mixing them
Normalize mass units carefully, preserve the named ingredient and avoid converting activity measures with a generic formula.
- Mineral amount vs. compound weight: choose the right number
Avoid mixing the amount of a named mineral with the weight of its source compound when building an ingredient price comparison.
- Fish oil and algal oil: compare the EPA and DHA amounts you mean
Keep total oil, EPA, DHA and serving size separate so that an omega-3 cost comparison answers a clearly defined question.
- Powder weight vs. protein weight: choosing a fair price denominator
Compare a tub price per gram of labeled protein without confusing total powder mass, scoop size and the nutrient amount.
- Comparing proprietary blends when individual amounts are missing
Learn what you can calculate from a blend label, which ingredient comparisons remain unresolved and what to ask before buying.
- How to read a supplement label before comparing prices
Build a useful supplement comparison by recording serving size, ingredient amounts, other ingredients and the exact package identity.
- Serving size vs. bottle count: why 120 capsules may mean 60 servings
Distinguish capsule count, labeled servings and days of supply so that package-size comparisons use the same denominator.
Do the math
- Bulk supplement packages: find the usable-serving break-even point
Compare bulk and small packages using expected usable servings, cash required today and a transparent break-even calculation.
- How to compare supplement prices on a fair basis
Use a repeatable price worksheet that separates label quantities, checkout costs and assumptions without inventing a product ranking.
- Coupon math: compare the final total, not the discount badge
Translate percentage and dollar offers into comparable checkout costs while keeping eligibility, minimum spend and future rewards separate.
- A monthly supplement budget: cash purchases vs. consumption cost
Plan a supplement budget with inventory and whole-package purchases instead of confusing a 30-day cost estimate with the bill due today.
- Shipping and tax: include the checkout costs without double counting
Calculate a supplement purchase total and choose a consistent method for allocating order-wide charges across several items.
- Supplement subscriptions: calculate the refill cost and interval
Separate first-order discounts, later deliveries, inventory and cancellation questions before treating a subscription as a saving.
- Unused servings and label dates: what your supplement really costs to use
Keep declared supply separate from expected usable supply and model waste without inventing shelf life or changing storage instructions.
Check before buying
- How to check a supplement claim without turning reviews into evidence
Turn an advertisement into a clear research question and separate the exact product claim from testimonials, ingredient background and original research.
- Finding official supplement sources: a research trail you can repeat
Use FDA, NIH ODS, NCCIH and FTC for distinct questions and keep the claim, source scope and unresolved details in a clear research record.
- What to bring to a pharmacist when asking about supplements
Prepare exact labels, actual use and a complete product list so that a supplement consultation begins with clear information rather than a brand nickname.
- Keep a supplement purchase record that can answer a real question
Save the matching label, checkout, seller and receiving information so that a later price comparison or product question does not rely on memory.
- A supplement problem: getting care and preserving a useful report
Prioritize appropriate care, keep the exact product and timeline information, and use FDA’s official supplement reporting instructions.
- A supplement buying checklist: identity, evidence and checkout
Organize the product, evidence, suitability and purchase questions that should remain visible before you choose a supplement.
- Supplement certification logos: verify the exact product and scope
Look up a supplement certification with the issuing program and keep product identity, program scope and clinical claims separate.