Anyone tried Lactaboost to increase milk supply?

I've had milk supply issues since my son was born 2 months ago as a result of him not latching onto my breasts properly from the start, due to his tongue tie, and having to introduce formula top ups, as he was not getting enough milk. His tongue tie was snipped and he now latches on beautifully but I just don't produce enough milk and am still having to give him formula top ups. I have tried Espiride and Fenugreek but neither one has increased my milk supply substantially. I decided to buy a bottle of Lactaboost, which I see was posted on this site a couple of years ago. I was wondering whether it is safe to use, whether it worked for any of you or whether anyone can tell me more about it?