I have been on Lupron for about a month and I have my second shot...

i have the dizziness and passed out twice since starting lupron also

I feel for you. I was given Lupron. I gained roughly forty pounds. I had mild dizziness, great depression, and nausea every day. I would randomly break out in sweats were I was literally soaking wet. It was so bad I didn't go back for the last of six shots. I just couldn't do it. And the worst part was how fast I balloned to a size 22 from a size 12 -(for a 5' 2 already curvy woman) this was like an elephant on toothpicks and it did not reverse itself as quick as it cam upon me. I walked when I had the energy which was depleted. It was a nightmare. In the end it did not have the desired effect the doctor was going for. It took about a year for me to get that stuff completely out of my system, i.e. my body, the flesh and tissue of my body. If you have alternatives try that. I wouldn't wish Lurpon therapy on anyone.