Label skills
How to Read a Supplement Facts Label (Using Protoflow)
To read a supplement facts label, start with the serving size, then the servings per container, then the amount of each ingredient and its percent Daily Value. Last, read the other ingredients line below the panel. On Protoflow, the serving is 2 capsules, a bottle holds 30 servings, and 14 actives are listed with amounts.
Written by the Protoflow label deskUpdated · 4 min read
How do you read a supplement facts panel?
Read it top to bottom in five steps. Each one answers a question you need before you decide.
The layout is set by federal rules: serving size and servings per container first, then amounts per serving (eCFR, 21 CFR 101.36 (Supplement Facts)).
Serving size
How many capsules make one serving? Protoflow: 2.
Servings per container
How many days does it last? Protoflow: 30.
Amount per serving
Check each line in milligrams. Protoflow prints all 14.
Percent Daily Value
Compare with a reference amount, where one exists.
Other ingredients
Read the line below the panel for allergens and the capsule shell.
What does DV mean on a supplement label?
DV means Daily Value, a reference amount used to show how much of a nutrient one serving gives. A % DV above 100 means more than that reference.
Two Protoflow lines have a DV. Vitamin E at 13 mg is 87% DV. Niacin at 75 mg is 469% DV, because the adult DV is 16 mg (NIH ODS, Niacin).
A high % DV is not a quality mark. For niacin, the supplement upper limit is 35 mg a day, so 75 mg is more than twice that limit (NIH ODS, Niacin). Flushing, meaning red, warm, itchy skin, is the usual effect around 30 to 50 mg.
| Line | Amount | % DV | What it tells you |
|---|---|---|---|
| Vitamin E | 13 mg | 87% | Below the DV |
| Niacin | 75 mg | 469% | Above the upper limit |
| Hawthorn | 250 mg | * | Daily Value not established |
What does the asterisk mean on a herb line?
The asterisk marks an ingredient with no Daily Value. The footnote reads "Daily Value not established". Most herbs fall here.
That means a milligram figure is all you get. You need outside evidence to judge it. Saw palmetto is one example: Protoflow holds 84.5 mg, while the large trials used 320 mg a day and found little or no difference for urinary symptoms (Cochrane review, Franco 2023).
Also check for a proprietary blend, which lists a total without single amounts. Protoflow has none: every amount is printed. Our ingredients page sets each dose beside its research.
Protoflow: from $1.63 a day60 capsules a bottle · packs of 2, 3 or 6 · 60-day money-back guarantee
See packsWhat should you check after reading the panel?
Check three things next: the suggested use, the caution line and who distributes it. A good panel with a weak source still leaves gaps.
- Suggested use: Protoflow says two capsules daily with water
- Caution: consult a physician before use if you take any medication
- Distributor: PhytoThrive Labs, Aurora, Colorado; maker not named
A complete label is not proof of benefit. FDA does not approve supplements before sale (FDA, Dietary Supplements Q&A). We apply these checks on every page; see our editorial standards. Ask your doctor or pharmacist about interactions, and keep taking prescribed medicine.
Order Protoflow
Thinking of trying it? The bigger packs cost less per day.
Prices from the sales page, October 19, 2026 (Protoflow sales page: packs). Two bottles cost $158 plus a small shipping fee. Every pack carries the 60-day money-back guarantee. Check your medicines first.
FAQ
Supplement label questions
01Why do some supplement labels hide single doses?
They use a proprietary blend, which gives one total weight for several ingredients. You cannot tell how much of each is inside. Protoflow does not do this, because it prints an amount for each of its 14 actives.
02What does the as in Vitamin E as D-Alpha Tocopheryl Succinate mean?
It names the source form of the nutrient. The amount shown is the vitamin itself, 13 mg, not the weight of the whole compound. This detail helps you compare products that use different forms.
03Is a bigger total milligram figure a better supplement?
No. A large total can come from cheap bulk herbs, and the dose of each one still matters. Protoflow totals 1,619 mg across 14 actives, but several herbs sit well below the doses used in trials.
Who wrote this
Written and reviewed by
Pages built from the Protoflow label, the sales page and linked NIH, FDA, FTC, NHS and peer-reviewed sources.
Last updated . Learn about our editorial standards and how we check reviews. This website is run by Goprotoflow, a licensed U.S. retail desk for Protoflow, not by the manufacturer or by PhytoThrive Labs. We earn money when you buy through our order links.
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