This is a Heparin with low molecular weight There is scientific proof on the lack of excretion of Dalteparin into breast milk. The high molecular weight of the so-called Standard or non-fragmented Heparin and others called low weight Heparins makes that excretion into breast milk very unlikely. There is published evidence of a lack of anti-coagulant activity in the serum of breastfed infants whose mothers were treated with Enoxaparin. In addition, Heparin derived drugs are inactivated in the gut and they are not absorbed at all, hence, oral bioavailability is nil. The risk of Heparin-induced Thrombocytopenia and Osteoporosis is lower with low weight Heparin among treated adults.