What’s a Filler?
Fillers are ingredients added to supplements primarily to reduce production costs, improve texture or appearance, or bulk up the product, making it look like you’re getting more. These ingredients typically offer no nutritional value and may even have unwanted side effects, depending on their source and purity.
At Why Not Natural, we avoid fillers and focus on using nutrient-dense, functional ingredients to ensure the highest quality for your health.
Anti-caking/anti-clumping agent (talc is the more common name for magnesium silicate). Talc can contain asbestos and there are no requirements for it to undergo testing for asbestos contamination. Only talc-containing products labeled "USP-grade talc" have been confirmed to be free of asbestos.
A "flow agent" that keeps ingredients from sticking together and delays breakdown and absorption of medications. Can irritate the mucosal lining of the bowels and cause diarrhea in high doses.
Anti-caking agent used to improve texture. May contain nanoparticles which have been linked to gastrointestinal issues such as leaky gut. When consumed long-term, potentially linked to DNA and cell damage.
- Titanium dioxide/iron oxide/zinc oxide
Other common anti-caking agents, also used for texture, as zinc and iron supplements, or for color/appearance.
Titanium Dioxide: Although approved in the U.S., it was banned as a food additive in the EU (2022) due to concerns about DNA damage and cellular toxicity at high doses. Risks are greater when inhaled, but long-term ingestion remains a topic of debate.
Iron and Zinc Oxide Nanoparticles: Research on nanoparticles (not standard forms) indicates potential risks of oxidative stress and toxicity to the liver, kidneys, and lungs at high doses. However, these risks primarily apply to industrial or laboratory contexts, not typical supplement doses.
Instead of fillers, our vitamins are carried in nutrient-dense, functional ingredients (like spirulina or MCT oil) for bonus benefits.