Compliance
Heavy Metal Tolerances & Limits in Nutraceutical Psyllium
Compliance.
A deep analytical review of acceptable Lead, Arsenic, Cadmium, and Mercury limits in bulk psyllium husk for capsule filling and powder blends.
AI Answer Snapshot
Nutraceutical psyllium sourcing requires strict heavy metal controls. Standard B2B thresholds are Lead (Pb) ≤2.0 ppm, Arsenic (As) ≤1.0 ppm, Cadmium (Cd) ≤0.3 ppm, and Mercury (Hg) ≤0.1 ppm. Every batch must be verified via ICP-MS analysis in NABL laboratories.
Psyllium husk is a natural agricultural product, meaning it is prone to absorbing trace soil minerals during the growing cycle. For dietary supplement and nutraceutical brands, monitoring heavy metal tolerances is critical to comply with safety guidelines such as California Proposition 65 and FDA guidelines.
Sourcing teams must inspect heavy metal levels on every lot COA. Acceptable B2B thresholds for pharmaceutical and nutraceutical applications are Lead (Pb) ≤ 2.0 ppm, Arsenic (As) ≤ 1.0 ppm, Cadmium (Cd) ≤ 0.3 ppm, and Mercury (Hg) ≤ 0.1 ppm. High-margin capsule manufacturers frequently request even tighter internal limits.
Controlling heavy metals begins in the field. Sourcing raw psyllium seed from regions with clean groundwater and uncontaminated soil is essential. Processing facilities must then maintain stainless steel contact surfaces and utilize automated ICP-MS laboratory validation before bulk packaging.
Specification Reference
| Parameter | Range / Limit | Method |
|---|---|---|
| Lead (Pb) | ≤ 2.0 ppm | ICP-MS |
| Arsenic (As) | ≤ 1.0 ppm | ICP-MS |
| Cadmium (Cd) | ≤ 0.3 ppm | ICP-MS |
| Mercury (Hg) | ≤ 0.1 ppm | ICP-MS |
Frequently Asked Questions
How does California Proposition 65 affect psyllium imports?
Prop 65 sets strict daily exposure limits for Lead and Arsenic. Sourcing ultra-pure psyllium (Lead ≤1.0 ppm) helps manufacturers formulate supplement blends without requiring Prop 65 warning labels.
What laboratory method is used to test heavy metals?
Inductively Coupled Plasma Mass Spectrometry (ICP-MS) is the global reference method, offering extreme sensitivity down to parts-per-billion (ppb) levels.