Fenugreek and breastfeeding?

Tiffany 💙👼🏼💙

I breastfeed my son but after returning back to work I noticed my supply dropping (I can only pump once while at work). I started looking into products to help build my supply back up and I came across these shakes called “upspring milkflow” that have really good reviews. One of the main ingredients in it is Fenugreek. I’ve seen moms on here avoiding that ingredient and I was just wondering why? I can’t really find much online about it.