<p>The effect of pramipexole on pregnancy and lactation has not been investigated in humans so it should be used during pregnancy only if the potential benefit justifies the potential risk to the foetus. Pramipexole inhibits secretion of prolactin in humans. The excretion of pramipexole into breast milk has not been studied in women so it should not be used during breast-feeding. However, if its use is unavoidable then breast-feeding should be discontinued.</p>