does anyone here feel that some of the liquids give you heartburn???

ive got a few different flavors from the same vendor, and a few liquids seem to bring on heartburn, while others do not... strange???
seems to be a bit strange to me.
thanks
ive got a few different flavors from the same vendor, and a few liquids seem to bring on heartburn, while others do not... strange???
seems to be a bit strange to me.
thanks