Those things are pretty hard to find. Nationwide back order.
A local Walgreen's had it two days ago. I went in today and they were already out.
Luckily, Walmart had "a handful" in stock.
The first one I had, a couple of months ago, wasn't bad at all. The second one, though, is kicking my ass. My arm is noticeably more sore and I just feel like total crap.
Better than getting the shingles, I suppose.