I took Valcyte back in 2008 for around two weeks. I don't recall the exact dosage, but I think it was 900mg a day. Whatever the "Montoya Protocol" was at the time. I kind of regret doing it, because I can't say that I felt much of a difference after taking it. Ever since taking the medicine I've been afraid of developing cancer. There isn't a lot of specific information out there about the relationship between taking Valcyte and developing cancer, just the "valcyte may cause cancer" that all of the drug websites have. So, does anyone know of someone who took Valcyte and developed cancer afterwards? I'm actually experiencing a lot of bone pain right now and I'm concerned that it might be a sign of bone cancer or something similar. I'm probably overreacting, but Valcyte has made me worry about this sort of thing.