How to know if a supplement is good quality: a guide to choosing wisely

The supplements market grows year after year and, at the same time, our doubts must grow: how do I know if a supplement is of good quality? How do I tell the difference between an effective formula and one that just sounds good? What should I look for before buying?

These questions are especially important if you're looking for nootropics or functional supplements that help you in your day to day to improve concentration, combat stress or sleep better.

In this article we give you six keys so you can assess the quality of a supplement yourself and, along the way, we show you how we apply them at ZZEN Labs when formulating ours.

Active ingredients with scientific evidence

The basis of any effective supplement is that it includes ingredients with scientific studies backing their effect, especially when it comes to nootropic formulas. A quality supplement shouldn't include fillers or trendy substances with no real usefulness.

For example, our ZZEN Focus contains ingredients such as Bacopa monnieri (40% bacosides), L-theanine, Ginkgo biloba (24% ginkgo flavone glycosides) or Rhodiola rosea (3% rosavins, 1% salidrosides), all with clinical trials backing their cognitive benefits.

Effective doses, not decorative ones

It's not enough to include a good ingredient: it must be in the right dose. Many brands use symbolic amounts so they can mention them on the label, but which aren't effective.

Therefore, look for products that detail the exact milligrams per ingredient and, if possible, the concentration standard; for example, 40% bacosides in Bacopa or 10% withanolides in ashwagandha.

Clean formulas without unnecessary fillers

A well-formulated supplement doesn't need added sugars, artificial colourings or industrial preservatives. The cleaner its profile, the better the absorption and the lower the risk of intolerances.

With ZZEN Calm, an ashwagandha supplement in capsules, we only use Ashwagandha KSM-66® (600 mg), Melissa dry extract (200 mg) and dry saffron extract (30 mg). Nothing else.

Transparency in labelling

A quality supplement must show its complete formula. If you see confusing labels with proprietary blends or exclusive complexes without amounts per ingredient, be wary.

Manufacturing with guarantees

Make sure the supplement is manufactured under Good Manufacturing Practices (GMP), with laboratory quality controls and complying with food safety regulations.

At ZZEN Labs, all our products are manufactured in certified Spanish laboratories under GMP regulations and pass microbiological, heavy metal and stability controls.

Other certifications of ZZEN Labs nootropics

1. IFS Food V7 (International Featured Standards).

2. NSF certification for high-quality products.

3. Registration with the FDA (US Food and Drug Administration).

4. Halal certification.

5. Registration with the health authorities of Saudi Arabia (SFDA), the United Arab Emirates (UAE Ministry of Health) and Kurdistan (Medical Control Agency).

Functional, not miraculous, approach

Be wary of supplements that promise immediate or miraculous results. Cognitive improvement, rest or emotional wellbeing are processes, not quick tricks. A good supplement should accompany you, not replace you.

How to identify a quality supplement

Before buying a supplement, make sure it meets at least these six points:

*Extra tip: if the label doesn't let you work out how much active ingredient you take per capsule, you already have your answer. A formula that can't be shown in detail is usually a formula that doesn't hold up to comparison.

How we do it at ZZEN Labs

We're a young brand, but very clear in our mission: to create functional supplements that support mental wellbeing, with clean, honest formulas backed by real science. Our formulas are designed to:

1. Support mental clarity and concentration, with ZZEN Focus.
2. Encourage natural, deep rest, with ZZEN Sleep.
3. Promote emotional management and calm, with ZZEN Calm Ashwagandha.
4. 7 essential salts for cellular energy, rest, brain health and muscle recovery, with Magnesium 7+.
5. Protect your cardiovascular health, strengthen your mind and care for your vision with ZZEN Labs Omega-3.
6. Hormonal balance, improved bone health and immunity and defences with the Vitals multivitamin.
7. Boost your physical performance with electrolytes, AstraGin® and DigeZyme® with the new Creatine+.

Why the ZZEN Labs approach starts here

Choosing a supplement well isn't about finding the flashiest one, but the one that can prove what it says. Those six keys are the same ones we measure ourselves against every time we formulate something.

“A good formula doesn't need to convince you. It's enough for it to let itself be read.”

Discover our products at ZZEN Labs and check for yourself why we're a different alternative: without empty promises, but with real commitment to your wellbeing.