Comparisons · 6 min read
How to Read a Supplement Facts Label (Before You Buy a Nootropic)
The Supplement Facts panel is the most useful thing on any supplement bottle, and the part most people skip. Once you know how it is laid out, you can compare two nootropics in about a minute and spot vague marketing quickly. Here is how to read one, section by section.
By Vibe Editorial Team · Published 2026-10-14 · Updated 2026-10-14
TL;DR
- Start with serving size — every dose on the panel is per serving, not per capsule.
- Individually listed doses let you compare an ingredient against the amounts used in published research.
- A proprietary blend lists its total weight but not each ingredient's amount. Check how much of the formula sits inside it.
- 'Other ingredients' covers capsule material and flow agents; allergen statements sit below.
- A label tells you what is in the bottle. It does not prove the product works for you.
1. Serving size and servings per container
Every amount on the panel is per serving. If a serving is two capsules, a 60-capsule bottle lasts 30 days. Comparing price per serving is more honest than comparing price per bottle.
NeuroSpark's serving is 2 capsules, with 60 capsules and 30 servings per bottle.
2. Individually dosed ingredients
When an ingredient carries its own milligram amount, you can compare it with the doses used in human studies. That is the main benefit of a transparent label.
Also check the form, for example Alpha-GPC versus plain choline, or a standardized Bacopa extract versus raw powder. The form can change how much of the active compound you actually get.
3. Proprietary blends
A proprietary blend is a named group of ingredients with one total weight. US law requires the ingredients to be listed in descending order by weight, but not each one's amount.
Blends are not automatically bad, but they are less transparent. A reasonable question to ask: how much of the formula is in the blend, and are the main actives dosed outside it? NeuroSpark lists most of its actives individually and includes one disclosed proprietary blend that makes up a minority of the formula.
4. Other ingredients and allergens
'Other ingredients' lists the capsule shell, fillers, and flow agents such as magnesium stearate or silicon dioxide. These are standard in capsule manufacturing.
Read the allergen statement carefully. For example, Alpha-GPC is often made from soy, which is why NeuroSpark's label says it contains soy.
5. What the label cannot tell you
A label does not confirm purity or potency. That comes from manufacturing standards (cGMP) and third-party testing. It also cannot predict how you personally will respond. If you take medication or have a health condition, ask your doctor before starting any supplement.
Keep going
Frequently asked
- Is a proprietary blend a red flag?
- Not automatically. It means you can't see each ingredient's exact amount. Check what share of the formula is inside the blend and whether the key actives are dosed separately.
- Why is the serving size two capsules?
- Some ingredient amounts don't fit in a single capsule of a normal size. The panel's amounts are per full serving.
- Where can I see NeuroSpark's full panel?
- The complete Supplement Facts table is on the Ingredients page.
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About the author
Vibe Editorial Team
In-house editorial collective, Vibe Premium Supplements
The Vibe editorial team writes and fact-checks every article on vibesupp.com. We work directly with our product and formulation team to keep ingredient, dosing, and safety language consistent with what is printed on our Supplement Facts panel and our published research notes. All content is supplement-compliant and reviewed against current FTC and FDA guidance for dietary supplement marketing.
View profile →Educational content only. These statements have not been evaluated by the FDA. This product is not intended to diagnose, treat, cure, or prevent any disease.