There is not enough information available at this time to determined whether imazapyr causes cancer, or adverse effects on reproduction or fertility. No reports of long term health effects in humans were found. Water is not toxic. Propylene glycol is low in toxicity. Very large doses can cause hypoglycemia, lactic acidosis and seizures in some sensitive people.
Surfactants are generally low in toxicity.
Isopropanol may be a toxic hazard if a large amount is swallowed. These health effects evaluations have taken into consideration the potential for both worker and public exposure from Forest Service operations. This information has been used in assessing health risks and consequently in formulating protective measures to reduce risk to forest workers and to the public. Section VII of this fact sheet, Safety Precautions, provides guidance for the safe handling and use of imazapyr. Avoid contact with skin, eyes or clothing.