Proprietary Blends in Supplements
What Are Proprietary Blends?
Proprietary blends were likely created as a way for companies to protect their unique formulas from competitors. By keeping exact ingredient amounts secret, a company can prevent copycats from replicating their product. On the surface, this sounds reasonable—but it does raise concerns for those consuming the supplements.
Why It Matters for You
When you’re taking a supplement, you want to know what’s in it. Proprietary blends don’t require companies to disclose the exact amount of each ingredient—they only have to list:
- All ingredients included in the blend
- The total weight of the blend
This is allowed under the Dietary Supplement Health and Education Act (DSHEA), so it is legal—but legality doesn’t always equal safety or transparency.
The issue arises when companies prioritize profit over consumer health. Some may use filler ingredients, including only the bare minimum of active ingredients, all hidden under the label of a proprietary blend. In these cases, your health may not be the main focus—it’s the profit margin.
Transparency vs. Proprietary Blends
When a company is transparent about its ingredients, it signals that they care about quality and consumer safety. Transparency allows you to make informed choices about what you are putting into your body.
While a proprietary blend isn’t automatically unsafe, it does require extra scrutiny. The safest approach is to choose products from companies that:
- Clearly list the amounts of each ingredient
- Focus on helping consumers, not just growing profits
- Prioritize ethical formulation over marketing tactics
Final Thoughts
Supplements can be helpful tools for wellness—but the industry isn’t always straightforward. Proprietary blends may protect a company’s recipe, but they also limit your knowledge about what you’re actually ingesting. Staying informed and choosing transparent products can help you feel confident in the supplements you use.

