This isn't so much an alternate lube suggestion as a potential "treatment" suggestion.
If you find that certain products are giving you yeast infections, try eating yogurt that has live culture in it - acidophilus. If you eat the yogurt both before using something that gives you infections, as well as a couple of times afterwards, that may solve your problem.
I always used to have problems when taking antibiotics, but since I started eating yogurt at the same time, no more problems!
And since eating yogurt is healthy for you anyway, it can't hurt, even if it doesn't help.
Z