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What a Proprietary Blend Means on a Supplement Label

Quick answer

A proprietary blend supplement lists several ingredients under one blend name with a single total weight, so you cannot see how much of each is inside. That makes it hard to compare with studies or to check for interactions. Ask for the amounts, or pick a label that prints them.

By the MemoPryl label deskUpdated · 4 min read

MemoPryl bottle, Cognitive Support Formula label, 30 capsules
The flat bottle image with label A (Cognitive Support Formula, 30 capsules). No Supplement Facts panel is shown.

What does a proprietary blend mean on a supplement label?

It is a group of ingredients listed together under a blend name, with one total weight for the whole group. The amount of each ingredient inside is not shown.

Ingredients are usually listed from most to least by weight, so the order gives a rough hint. It does not give a dose. Two products with the same ingredient names can hold very different amounts.

FDA says companies must still have evidence their products are safe and their label claims are truthful (NIH ODS, Supplements Need To Know), but it does not approve supplements before sale (FDA, Using Dietary Supplements).

Why do amounts matter?

Studies test specific amounts, and interactions can depend on how much you take. Without amounts you cannot compare your capsule with the research.

Here are the amounts some studies used. One trial gave soy phosphatidylserine at 100 or 300 mg a day for six months (Kato-Kataoka 2010, soy PS trial). The large ginkgo trial used 120 mg of extract twice a day (DeKosky 2008, GEM trial, JAMA). LiverTox gives a typical bacopa dose of 300 to 600 mg of extract a day (LiverTox, Bacopa monnieri).

  • Phosphatidylserine

    Amount per capsule unknown
    Daily amount in human studies100 to 300 mg
    On the bottle imagesNot printed

    Amounts come from published trials, and every row uses its own scale. (Kato-Kataoka 2010, soy PS trial)

  • Ginkgo biloba leaf extract

    Amount per capsule unknown
    Daily amount in human studies240 mg
    On the bottle imagesNot printed

    Amounts come from published trials, and every row uses its own scale. (DeKosky 2008, GEM trial, JAMA)

  • Bacopa monnieri extract

    Amount per capsule unknown
    Daily amount in human studies300 to 600 mg
    On the bottle imagesNot printed

    Amounts come from published trials, and every row uses its own scale. (LiverTox, Bacopa monnieri)

  • Acetyl-L-carnitine

    Amount per capsule unknown
    Daily amount in human studies1,000 to 3,000 mg
    On the bottle imagesNot printed

    Amounts come from published trials, and every row uses its own scale. (NIH ODS, Carnitine)

The gold bars show daily amounts from human studies, and the light part marks the range. The dashed bar stays empty, since none of the bottle images prints an amount. No study has tested MemoPryl itself.

The bars show amounts studied, not amounts recommended. They are not a dose for you.

How do I read a label with a blend?

Look for the blend name, the total weight, the ingredient order and any amounts for single ingredients outside the blend.

Label with and without amounts
What you seeWhat you can tell
Each ingredient with an amountCompare with studies and check interactions
Blend name and total weightCombined weight only; each share unknown
No panel at allNothing about amounts

If the seller will not give amounts, take that as an answer. Ask a pharmacist before you buy.

MemoPryl: capsules in 2, 3 or 6 bottlesRead the bottle · check medicines first · 60-day window (confirm)

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What does this mean for MemoPryl?

The two bottle images we have print no Supplement Facts panel, so we cannot say whether MemoPryl uses a blend. No amounts are printed anywhere we have seen.

Six names are tied to it on a sibling pack: phosphatidylserine, ginkgo, N-acetyl L-carnitine, St. John's wort, bacopa and L-glutamine. They are unconfirmed for your bottle. The bottle you receive wins. Read it, and keep taking prescribed medicine until a clinician says otherwise.

Thinking about MemoPryl?Check your medicines with a pharmacist first. The checkout confirms prices and the 60-day window.

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Until the seller confirms its list, prices stay as fill-in fields. The checkout shows the final total.

See the supplement facts page and the ingredients page.

FAQ01

Questions people ask about MemoPryl

Is a proprietary blend bad?

Not by itself. It just hides how much of each ingredient is inside, which makes dose and interaction checks harder. If you take medicine, ask a pharmacist about every ingredient in the blend.

Do ingredients in a blend appear in order of amount?

Usually, from most to least by weight, but check the label. The order hints at proportions without giving numbers, so it cannot tell you whether a capsule matches a studied dose.

How can I find out what is in my supplement blend?

Ask the seller for the amounts, read the whole bottle and show it to a pharmacist. If no amounts are given, treat the product as unverified and choose one that prints them.

Who wrote this02

Written and reviewed by

Written byThe MemoPryl label deskMemopryl.cc, MemoPryl USA retail

Each page draws on the bottle images, the seller's product notes and linked NIH, FDA, FTC and peer-reviewed sources.

Medically reviewed byDr. Neelum Aggarwal, MD, PhysicianRole: Medical reviewerReview date: October 19, 2026

Last updated . See our editorial standards and how we check reviews. This website is run by MemoPryl USA retail, not by the manufacturer or the distributor of the bottle. We are paid a commission when you buy through our order links.

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