Practical Guides

Small ceramic dish of dark red gummies beside a glass of water and folded paper sheets on a sunlit white surface
Iron for Teen Girls: 18 mg, Timing, and the Stomach Problem
The RDA for iron jumps to 18 mg a day for girls at menarche and stays there through the teens. Getting that much in without nausea is mostly a question... Read more...
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Reading a Supplement Label: The Six Numbers That Actually Matter
Front of bottle claims are decoration. Everything you need is in the Supplement Facts panel, and most of it is in four lines: serving size, the elemental number, the percent... Read more...
Three amber glass bottles with white caps, one tipped over spilling white capsules and amber softgels onto a warm surface
Magnesium at Night or in the Morning: What the Form Decides
There is no single best time to take magnesium. Glycinate usually goes at night, citrate goes with food and a full glass of water, and oxide mostly stays in the... Read more...
Pale golden plant sterol granules in a shallow dish beside a dried leaf
Cholesterol Support for Adults: What These Four Labels Declare
Adult cholesterol labels run from 1,500 mg of plant sterols and stanols down to 200 mg of guggul, and each one prints the same FDA disclaimer. Read the weights. Read more...
Five small ceramic dishes each holding a different grain or seed
Allergen Statements vs Shared Facility Lines on a Supplement Label
An allergen statement covers the nine major allergens in the formula; a shared facility line is voluntary. Read both before you buy a 90 count bottle of gummies. Read more...
Sealed plain sample pouch and a folded certificate card on a grey surface
Heavy Metal Limits on a Supplement Label: Reading ppm and Micrograms
Heavy metal limits are printed in ppm, where 1 ppm equals 1 mcg per gram, so a 500 mg serving at that limit carries half a microgram. Read more...
Lidded unglazed ceramic jar beside a folded linen cloth in cool shade
How Long Gummies Last: Best By Dates and Storage That Matter
Gummies carry a best by date, not a hard expiration, and a 90 count bottle at two a day is 45 servings. Heat and humidity end bottles early, not time. Read more...
Two clear glass tumblers of different sizes in the same window light
One Bottle for Kids and Adults: Reading a Dual Age Label
A bottle labeled for kids and adults carries two serving rules, not one average dose. Choline splits at 125 mg for ages 4 to 12 and 250 mg from 13... Read more...
Three stainless measuring spoons of decreasing size in a row
Mg vs Mcg vs IU: Three Units That Measure Three Different Things
Mg and mcg measure weight, IU measures biological activity, and a 2 mL daily drop can be labeled in any of the three. Here is how to read them. Read more...
Single two tone capsule beside a clear glass of water
When Swallowing Pills Is Hard: Gummies, Drops and What Each One Gives Up
Capsules carry the most material per swallow, about 500 mg in one beef organ capsule, while a 1 to 2 mL drop or a chewable gummy trades payload for comfort. Read more...
Three piles of plant powder arranged from largest to smallest
Why Supplement Ingredients Are Listed by Weight, and Where That Rule Stops
Ingredients on a supplement panel run heaviest first, so 1,000 mg of TUDCA above 500 mg of milk thistle is a ranking; named complexes hide the numbers. Read more...
Four blank kraft paper tags with twine laid in a row
Non-GMO, Vegan, Gluten-Free and GMP: Who Checks Each Claim
Non-GMO, vegan, gluten-free and GMP are 4 separate claims on a supplement label, and only 1 of the 4 has a federal standard behind it. Read more...