One reviewer says it's because you are not taking enough. It seems to work better than taking all of these ingredients and putting them in a supplement.

I wish i had found it earlier as my supply was dwindling. Will continue to use periodically. I wish a subscription to it were available on amazon in order to have savings.

I have oversupply usually but when my new baby was diagnosed with a retrognathic jaw my milk supply tanked. I pump 10 ounce in 5 hours and my baby drinks 4 ounces every 3-4 hours.

One of the ingredients is fenugreek which has side effects of making mother and baby gassy and nauseous. Most foul thing i have ever tasted.