Platinum Naturals' Prenatal Omega-3 DHA for pregnant and nursing mothers, contains a concentrated level of DHA to help support healthy brain development. It is also enriched with Vitamin D to help maintain bone health. Prenatal Omega-3 DHA is independently tested to meet government standards of safety and purity of heavy metals (e.g. lead, mercury and arsenic) and other environmental contaminants (e.g. PCBs and dioxins).