Our Testa algae oil is often taken during pregnancy. The European Food Safety Authority also authorised a healthclaim concerning pregnancy/breastfed infants:

Docosahexaenoic acid (DHA) maternal intake contributes to the normal brain development of the foetus and breastfed infants.
Information shall be given to pregnant and lactating women that the beneficial effect is obtained with a daily intake of 200 mg of DHA in addition to the recommended daily intake for omega-3 fatty acids for adults, i.e.: 250 mg DHA and EPA. The claim can be used only for food which provides a daily intake of at least 200 mg DHA.

Docosahexaenoic acid (DHA) maternal intake contributes to the normal development of the eye of the foetus and breastfed infants.
Information shall be given to pregnant and lactating women that the beneficial effect is obtained with a daily intake of 200 mg of DHA in addition to the recommended daily intake for omega-3 fatty acids for adults, i.e.: 250 mg DHA and eicosapentaenoic acid (EPA). The claim can be used only for food which provides a daily intake of at least 200 mg DHA.

Testa also has a DHA product with 250 mg of DHA only. 

One capsule DHA/EPA and one capsule with only DHA would also be sufficient to be beneficial according to the EFSA healthclaims.