Can the homeopathic rhus toxicodendron help with acne rosacea?

I'm two months into a three month course of anti-biotics for acne rosacea. I'm taking two Erythromycin tablets a day, but it doesn't seem to be helping. A friend suggested I try homeopathy but I've never tried it. She gave me a container of rhus toxicodendron with all the instructions written on the side (don't touch them etc.) Can I take both at the same time? will it help? any advice appreciated.