Did any mummies here take the milkmaid tea to boost milk supply? Is it effective or any side effect( like cause any harm to baby )?

I didn't try it when I was breastfeeding but I have heard it works. It also depends on the mum - what is a booster for some mums may be a killer for others. The best thing to do is try out different types of known boosters, like virgin coconut oil, salmon, durian etc and see what works the best for you.