Raspberry zinger instead of raspberry leaf tea???

I've gone to every single store in my entire town, pharmacies, natural food stores, EVERYWHERE and no one has  raspberry leaf tea or red raspberry leaf tea. However, I found raspberry zinger. I checked the ingredients and it says raspberry leaves which is what I thought was the ingredient that was suppose to tone your uterus? I'd order some offline but I'm already passed 40 weeks so I probably won't even be pregnant by the time it'd get here. Will this work the same?