Is iced coffee at Starbucks made from espresso?

Ok. My favorite coffee at Starbucks is Iced coffee w classic syrup.

And i had bloodwork at dr’s office and came out that my cholesterol was high. My dr told me to stop espresso cuz it increases cholesterol but drip coffee is ok.

So my question is.. How is iced coffee at starbucks made? Is it with drip coffee or espresso?

I know it is dumb question but it is very important that affects quality of my life 😆

Helppppp