
2EXCIPIENTS
Animal vs. Plant-Based Magnesium Stearate: What's the Difference?
2 min read

Essentials
- Magnesium Stearate, a prevalent "inactive" ingredient in nootropics, can be sourced from both animal and plant origins, with the Stearate component determining its vegan status.*
- Labels indicating "Magnesium Stearate (vegetable source)" don't guarantee vegan purity due to potential cross-contamination during processing.*
Reading convoluted nutrient and byproduct labels can often be confusing—and a little disconcerting. At least for most people. And Magnesium Stearate is one of those "inactive" ingredients commonly questioned.
So why is it in almost every nootropic out there? Where does it come from? And why does the source matter (especially for vegans and vegetarians)?
Animal vs. plant-based Magnesium Stearate.
At its core, Magnesium Stearate is a blend of Magnesium and Stearate. It's a "flow agent" in capsules that works as an inexpensive lubricant. In short, it stops the individual ingredients in a capsule from sticking to each other and the machine that makes the capsules.
While Magnesium Stearate can be vegan, it's more commonly sourced from non-vegan origins. Now, you may wonder: 'Why does this even matter to me?' Well, it matters for vegans, vegetarians, and many sustainability-conscious consumers.
Did you know?
The Magnesium part remains consistent, but the Stearate... that's where things get interesting. The Stearate determines whether the product is vegan or not.*
The Stearate can come from various sources—both animal and plant-based. Eggs, dairy, salmon, chicken, and beef naturally contain stearic acid, which can be used to derive Stearate.*
If the Stearate is derived from naturally occurring Stearic Acid from these animal sources, your favorite nootropic (or cosmetic product, processed food, etc.) is not vegan.
On the other hand, certain plants (like walnuts, cotton seed oil, palm oil, or coconut oil) also contain Stearic Acid. So, sourcing Magnesium Stearate from plants is possible.
Why 'vegetable source' doesn't always mean vegan.*
Now, here's the kicker. Just spotting 'Magnesium Stearate (vegetable source)' on a label doesn't give it an all-clear vegan pass. Another potential concern is cross-contamination during processing.*
Imagine a scenario where Magnesium Stearate gets processed on the same equipment as non-vegan products. That's like making a peanut-free product in a factory that handles peanuts. Not entirely foolproof, right?
As a vegan, carefully reading the ingredients and byproducts is important so that you know exactly what's going into your body.
Ethically sourced Magnesium Stearate. Is it possible?
In short: Yes. In fact, there's been a lot of buzz about ethically sourced Magnesium Stearate in nootropics.
With an increasing number of consumers concerned about animal welfare, sustainability, and the environmental impact of animal farming, the nootropic industry has seen a trend towards using plant-based ingredients, including Magnesium Stearate.
Ethical sourcing is no longer a 'nice-to-have' but a 'must-have.' And let's be honest, no one wants to be left behind. So, many nootropic brands are leaning into plant-based ingredients, not just for the ethical brownie points but in response to growing consumer demand for vegan and ethically sourced products.