Proprietary Blend Explained: Reading the Lungora 575 mg Line

Turn a Lungora bottle around and one line does most of the talking: Proprietary Blend, 575 mg. Under it sit six ingredient names and no other numbers. This guide explains what that line means in US labeling law, what it lets you work out, and what it keeps out of view.

It is a group of ingredients listed under one total weight instead of one weight each. The federal rule for supplement labels lets a maker print the blend under the name Proprietary Blend, or something like it, give the combined weight, and list the ingredients in descending order of predominance by weight (21 CFR 101.36, Nutrition labeling of dietary supplements (eCFR)).

The FDA labeling guide says the same in plainer terms. The total weight goes on the blend’s line, the ingredients go underneath from most to least, and only ingredients with a Daily Value must be listed on their own with an amount (FDA, Dietary Supplement Labeling Guide, Ch. IV).

So a blend is legal, but it is not a dose list. A 2023 review in The Journal of Nutrition says the label cannot tell you how much of any single ingredient a person takes (J Nutr, Perspectives on proprietary blends).

They require the name, the total and the order, but not each ingredient’s weight. The right column shows how the Lungora label handles each line.

Sources: (21 CFR 101.36, Nutrition labeling of dietary supplements (eCFR)) (FDA, Dietary Supplement Labeling Guide, Ch. IV). Because the list must run from most to least, magnesium glycinate is meant to be the largest part of the blend and coenzyme Q10 the smallest. The rule gives you the order, never the gaps between.

Because it is already inside it. The label lists magnesium as coming from the proprietary blend, so the 80 mg is part of the 575 mg, not on top of it.

Also, 80 mg is the magnesium itself. The magnesium glycinate that carries it weighs more, and none of our sources gives the exact share, so we do not work out how much of the blend it fills.

For context, 80 mg is 19% of the 420 mg Daily Value and well under the 350 mg a day upper limit for magnesium from supplements (NIH ODS, Magnesium (health professional)). Our magnesium glycinate page covers the rest.

Ask for numbers in writing, and judge the answer by how specific it is. These questions work for any blend.

• How many milligrams of each blend ingredient are in one serving?
• Which extract is used, and what is it standardized to? (Only the turmeric line gives a figure here.)
• Who manufactures the product? The label names only a distributor in Aurora, Colorado.
• Is there a certificate of analysis for my lot from an outside lab, and can I see it?
• Which study, at which dose, supports the claim on the front of the bottle?

For Lungora, the order desk is at +1 (323) 417-0278 and [email protected]. A vague reply is an answer too.