- The larger the tablet, the more binders it contains. Examples of this include: calcium or magnesium stearate, which are both hydrogenated oils.
- Smaller tablets may include cellulose derivatives (ethyl and methyl) as binders. Ethylcellulose is a thermoplastic polymer, also known as “plastic”.
- Time-release tablets may contain the worst types of fillers, including hydrogenated oils and ethylcellulose. For example, a time release tablet of Vitamin C (1,000 mg) may contain 400 mg of hydrogenated oil in order to prolong release of the nutrients.
- Gel cap supplements (made from animal sources) are far less likely to contain toxic additives.
Although most of us will never experience any harmful side-effects from ingesting the small amounts of toxins found in these supplements, short term use may cause digestive upset and long term use may potentially cause more serious symptoms including allergies.