Paul36E, I don't blame you a bit for being cautious. But, as Cetan and Brom said, the descriptions are not lists of ingredients, but are just supposed to give you an idea of what the wine tastes like.
If the bottle says Shiraz, it's made from Shiraz grapes.
If the wine contains berries in the blend (which is very unusual, as it's difficult to make a good wine from berries), the label will tell you it's a blueberry-and-whatever else blend.
But if you want to try red wines, I'd recommend that you talk to the staff at your local wine shop. At a good shop, they usually have information about the wines that isn't printed on the label, and they should be able to help you make sure you're not getting ingredients that would be dangerous with your known allergies.