Lowanne,
When writing a new prescription, I would sometimes have to remind the doctor to write it for the liquid form. They sometimes had to look to see if it was available in liquid. My best source was my pharmacist. And I found that going to a small independent pharmacy was the best because they could usually mix almost anything in a liquid suspension, even if it didn't come from the manufacturer in a liquid. If they couldn't, they knew of a viable substitute. Lots of the pharmacists working in the chain pharmacies couldn't mix a suspension. If the med didn't come in liquid form, they were clueless. I think there are different levels of pharmacists and they can't all do the same things.
We did have to crush some meds for the tube, but as long as I crushed them superfine and mixed with some warm water, then flushed the tube immediately, we usually didn't have a problem. Be careful, though, some meds can't be crushed. Anything that is time-released can not be crushed. Again, your pharmacist will know what can be crushed and what can't.
We had cipro, clindamycin(sp?) and various other antibiotics, reglan, vioxx, colace, oxycontin and even zoloft in liquid form. As for what is available in liquid, you can check drugstore.com's website. They might not have everything listed, but I found quite a few just in a quick browse. Once on the main site, I clicked the pharmacy tab, then typed a medicine name in the search field. You can also browse alphabetically. When you click on the med's name, you will get a listing of available forms and strengths. The liquids will be listed as a concentrate or suspension.
Rosie