Starbucks Almond Milk/Drink

Mya

Most mornings I grab a drink made with Starbucks almond milk/drink and on the days where I don’t, I (think) I notice a decrease in my supply. Not sure if it’s in my head but I looked at their ingredient list and saw that it includes sunflower lecithin.

I’ve seen supplements with sunflower lecithin - is it a supply booster? Or does it have any effect on breastmilk? Or is this all in my head...?