Where can I buy domperidone in Singapore? Do I need drs prescription?

I got Domperidone from my gynae to help me to increase milk production. I took for 1 week and it did help me to increase my milk. However, I stopped taking it as I feel whatever I consumed it will pass to baby through my breastmilk and ultimately Domperidone is a hormone-based drug. You can purchase from pharmacy stores like Wastons and Guardian from the pharmacy counter.