With my youngest child, fluctuations in my thyroid affected my milk production, so I turned to the herbs fenugreek and blessed thistle to boost my supply. “We don’t know if these herbs actually increase milk “supply,” says Toronto paediatrician Jack Newman. “They seem to, and many mothers swear by their effect, but the placebo effect of any medication is very powerful.” The website lowmilksupply.org is a good resource. And remember, if your baby wants to feed more frequently that doesn’t necessarily mean she isn’t getting enough milk. She could be going through a growth spurt or cluster feeding.