BloomWellA proprietary blend on a tea label is a group of herbs shown as one total weight. The names are disclosed, in descending order by weight. The dose of each herb is not.
A proprietary blend is a group of ingredients declared on the Supplement Facts panel under one name and one total weight. The herbs inside are named. The amount of each one is not. A 1,200 mg blend of eight herbs could be almost all of one and a trace of the rest, and the label would read the same either way.
There is one clue the label must give you. Ingredients inside a blend are listed in descending order by weight, so the first herb named is the most abundant and the last is the least. That ordering is genuinely useful. If the herb a product is marketed on appears fifth out of seven, you have learned something real, even without a milligram figure attached to it.
So the panel hands you a ranking and withholds the arithmetic. That is the whole trade, and it is worth understanding before you decide what a blend on your own tea box is telling you.
Yes, and that surprises most readers. Under US rules, the weight of the blend and the names of the ingredients inside it must be declared, but not the individual amounts.
The maker still has to record every dose internally: the FDA requires the Master Manufacturing Record to list each ingredient amount. The number exists. It just does not reach your counter.
It helps to know the category you are shopping in. In the United States, herbal and dietary supplements are treated as a special class of food, which does not subject them to the same strict safety and efficacy standards as pharmaceutical medicines. That framing is not a scandal by itself. It just puts the burden of reading on you.
“A proprietary blend is not proof that a product is bad. What it does is shift the burden onto you. It asks for trust in place of arithmetic.”
Common enough to be the norm rather than the exception. Writing in The Journal of Nutrition in 2023, Saldanha and colleagues found that 21% of labels in the Dietary Supplement Label Database listed ingredients in proprietary blends as of April 2022. They also noted that up to 87% of labels could use one.
Tea blends sit squarely inside that majority. If you have a slimming or detox tea in the cupboard, the odds are good that the panel on the side of the box gives you a single total and a list of names, and nothing more precise than that.
Which means this is not a question about one suspicious product. It is the ordinary shape of the aisle, and reading it is a skill you use on every box you pick up.
"When the amount of an ingredient inside a proprietary blend is not declared, it is not possible to accurately calculate intakes of that ingredient, or to determine the doses used in clinical trials from label information."
The clinical question, mainly. The same 2023 review is direct about the consequence: when the amount of an ingredient inside a blend is not declared, it is not possible to accurately calculate intakes of it, or to determine the doses used in clinical trials.
So a blend can name a studied herb while containing a fraction of it, and the panel will not tell you. The name on the label and the amount in the cup are two different facts, and only one of them is disclosed to you.
That gap is what makes a blend hard to compare against research. You can see that the herb is present. You cannot see whether it is present in anything like the quantity a study used.
Opacity is also where genuine safety problems hide. A 2026 mini-review in Frontiers in Nutrition on diet and detox teas reported analytical studies that found undeclared pharmaceutical ingredients, high stimulant levels, and gaps between labeled and actual contents.
The same review noted that 91.7% of the diet teas examined contained senna leaf, a laxative. That is a working ingredient with real effects on the body, sitting inside products marketed as gentle daily habits.
None of that is an accusation against any one maker. It is a reason to look at what a blend total is covering, especially in a category where a stimulant or a laxative can be present without the panel telling you how much of it you are drinking.
Open the Supplement Facts image before you buy, not after. Note the blend total, read the herb order, and see whether anything is broken out with its own milligram figure, since ingredients with an established Daily Value must still be declared individually.
Those three moves take under a minute and they tell you most of what the panel is willing to say. The total sets the ceiling: whatever the herbs add up to, they cannot exceed it. The order sets the ranking, first name to last. The broken-out lines are the only doses you will ever see, and on many tea boxes there are none at all.
Do the same reading on the maker's own website, where a company sometimes prints more than the panel requires. If the site repeats the blend total and nothing else, you have your answer about how much that maker is willing to show you before you spend anything.
BloomWell makes no claims about this third-party product. The maker publishes its own ingredient page.
Free to read · The maker's claims and terms are on their official page
Ranking is a blunt instrument, but it is not a useless one. A tea sold on one hero herb that lists that herb near the bottom of its blend is telling you something about its own priorities, and you did not need a milligram figure to hear it.
The reverse holds too. An herb named first is the largest part of the total by weight, which at least tells you where the bulk of that 1,200 mg is going.
What the order cannot do is tell you scale. First out of eight might be half the blend or a fifth of it. You are reading a sequence, not a measurement, and it is worth keeping those two things apart in your head.
Disclosure is a choice inside the rules, not a favour outside them. Nothing stops a maker from publishing doses it is not required to publish, and some do, on the panel or on their own ingredient page.
The figures already exist on the maker's side of the counter. Every dose sits in the Master Manufacturing Record the FDA requires, so a company that breaks out a milligram number is releasing something it already wrote down, not calculating anything new for you.
When a company breaks out a figure it could have left inside the blend, that is information you can use. When it does not, you are not looking at a violation. You are looking at a decision about what to share.
Either way, the useful habit is the same: notice which one you are holding before the checkout page, rather than after the box arrives and the panel is the only thing left to read.
A proprietary blend is not proof that a product is bad. Plenty of reputable makers use one, and formulation secrecy is a real commercial reason rather than an invented one.
A formula that took work to develop can be read off an open label and copied by a competitor in an afternoon. The blend total is the wall a maker puts up against that, and it happens to be the same wall standing between you and the arithmetic you wanted.
What a blend does is shift the burden onto you. It asks for trust in place of arithmetic, and you are entitled to decide how much trust a given maker has earned before handing it over.
That decision belongs to you and, where a supplement is concerned, to the clinician who knows your history. Read the panel, weigh what it declines to say, and take the question to your own doctor before you start anything new.
21% of labels in the Dietary Supplement Label Database listed a proprietary blend as of April 2022, per The Journal of Nutrition. [1]
One weight covers every herb inside. Each individual dose stays undisclosed.
Ingredients run in descending order by weight, so first named is most abundant.
Makers log each amount internally, but the panel never has to show it.
| Label type | Herbs named | Dose per herb | You can verify |
|---|---|---|---|
| Open label | Yes | Listed in mg | Dose vs research |
| Proprietary blend | Yes | Not disclosed | Weight order only |
| Blend plus vitamins | Yes | Vitamins only | The broken-out part |
| Ingredients only | Yes | No amounts | Almost nothing |
Yes. US rules require the blend weight and the ingredient names, not the individual amounts. Makers must still record each dose in their internal manufacturing and batch records.
Partly. Ingredients inside a blend are listed in descending order by weight, so the first named is the most abundant. You learn the ranking, never the milligrams.
Usually to protect a formula from being copied. The trade-off is that researchers and readers cannot calculate intakes or compare a product against the doses used in clinical trials.
Not automatically. Many reputable products use them. Read the ingredient order, check for undeclared stimulants or laxatives, and ask your doctor before starting any supplement.
The maker sells the tea in single and multi-pouch bundles, each with its own price.
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