Here's the original Nature Medicine paper.
Pros:
1. It's a peer reviewed Nature Medicine paper. (+1 point)
2. Their logic checks out, and their animal model validates their hypothesis. (+1 point)
Cons:
1. The study is in rats. (-1 point)
2. The study isn't in humans. (-1 point)
3. The study is the first of its kind and has not been further investigated, elaborated, or duplicated by an independent lab (-1 point)
The two drugs mentioned are
probenecid and also
mefloquine. Probenecid is an anti-gout medicine but it also decreases the excretion of many drugs, including penicillin and naproxen among others. Mefloquine is an antimalarial.
Both are presumably easy enough to get; they're not OTC but there are worse things to get a prescription for. Just keep in mind that there's no guarantee that either drug will work at all in humans, and also make sure to read up on the side effects: both are kind of "dirty" with respect to binding, in that they have a lot of biological activity at targets you don't want it to bind at. Probenecid can severely reduce excretion of many drugs via the kidneys, prolonging their duration of action in the body, and mefloquine has some scary possible neurological side effects like anxiety, nightmares, and psychosis.
My verdict is, try probenecid if you're desperate, want to risk being in a totally uncontrolled test of a new drug with no placebo to compare against, are comfortable with the risk of side effects, don't take an excess of other drugs that may be interfered with, and have a doctor who'd support you.
I'd wait until there's some proof this actually works in humans or at least some type of primate, not lab rats.