Fiber and Microplastic Excretion: What Studies Suggest

If microplastics are entering the body through food and water, a natural research question follows: what happens to those particles in the digestive tract — and can diet change how they move through?

A 2025 paper in Scientific Reports (Nature Portfolio) examined ingested fiber and microplastic excretion in animal studies: Fiber increased microplastic excretion in animal studies (Scientific Reports, 2025). Findings in animals are not the same as proven outcomes in people, but they help map mechanisms researchers care about.

Plant polymers enter the conversation

Separately, work published in ACS Omega has looked at plant-derived polymers — including materials from tamarind, okra, and fenugreek — for removing microplastics from water: Okra, fenugreek & tamarind polymers and microplastics (ACS Omega, 2025).

That laboratory and water-treatment context is one reason tamarind seed extract sits at the center of Tamarinse™, alongside other plant-based ingredients designed to support healthy digestive function and the body’s natural elimination processes.

Activated charcoal’s binding behavior in the digestive tract is another long-studied topic in clinical toxicology references such as StatPearls / National Library of Medicine. In Tamarinse, charcoal is included at a micro-dose intended for daily use — not as an acute medical intervention.

Educational only. Supplements are not intended to diagnose, treat, cure, or prevent any disease. Always review primary sources and speak with a qualified clinician about personal health decisions.