I expected Fluttershy to be playing medic

Tincture of iodine is the old-fashioned iodine disinfectant. Povidone-iodine is a more modern antiseptic that’s less toxic. At least around here (US) it commonly used before getting stitches, for instance.
 
From all I’ve heard, H2O2 will work as a antiseptic, but it can prolong healing.

@Cirrus Light  
I’m pretty sure. And I just looked it up, and apparently it is effective for removing warts. I just don’t remember what concentration it was, but it looks like 3 or so percent could work. And I doubt what what used on me was much stronger than 5.

@Registered Anon  
Are you completely sure it was hydrogen peroxide? Maybe it was higher concentration and it burned them off? It seems pretty odd to me, based on my experience with warts. Though recently medical stuff has started to find that those probably weren’t ordinary warts >.>

@Cirrus Light  
I don’t know the mechanism. But I remember it working.

Nurse Mom confirms iodine used to be used to clean minor wounds. Burned even more than alcohol, though, apparently. Hydrogen peroxide (H2O2) is really the best from what I’ve seen.
 
I think radiation resistance in pills is a better use of it. Though I’m sure a little research will turn up even more common useful applications.
 
 
@Registered Anon
 
Hmm. From what I’ve seen of H2O2, it’s basically rubbing alcohol minus the burn. So why would it remove warts? Clean them out or something?
 
@Keith Mowz
 
Yeah. Random cool fun fact: rather than a jet plane, the Germans made an experimental interceptor during ww2 that was a rocket plane - the Me 163. As you can imagine, its performance was completely unmatched, though it burned its fuel so quickly it had almost no range and had to land as a glider. It used hydrogen peroxide as an oxidizer to burn its fuel. The pilot wore a special polymer suit, because normal materials would burn on contact if the tanks ever leaked.
 
Modern rocket interceptors don’t exist because their role is played by far cheaper SAMs.
 
But yeah, so what @Background Pony #881A said is probably true for higher concentrations, but H202 works great at pharmacy concentrations.
 
Makes me wonder what concentration he’s talking about, then, because obviously it’s not aerospace concentrations, or it’d downright burn through skin, and I’ve never heard of pharmacy concentrations doing those things, despite years of use by some rather qualified professionals.

@Cirrus Light  
I went to check what mine is but it turns out the thing I have currently is just a generic antiseptic spray. :T But yeah you’re probably not gonna be using anything stronger than what you’d find in a pharmacy at home.

@Cirrus Light  
I remember having my mom use the stuff to remove a couple warts I had. Though I don’t remember the specific concentration, it was definitely the store strength stuff. Probably not more than 5 percent.

@Background Pony #881A  
It’s usefulness still outweighs those cons, though. My dad’s a surgeon, mom’s a nurse. I’ve got this little gaping wound we need to clean daily, and we use hydrogen peroxide to do that. Same thing back when I had big blisters from getting warts removed.
 
I think it largely depends on the concentration, though. The stuff you use to clean wounds, I believe, is like in the 2% sort of range.
 
Very high concentrations are actually useful as rocket oxidizer because it’ll explode on contact with certain kinds of fuels, neglecting the need for an ignition system, though a side effect is that it’s so toxic it would burn through your skin. Obviously extremely volatile :q

@Keith Mowz  
It’s also extremely toxic and apparently tends to retard healing and cause scar formation.
 
Fun pointless trivia fact: hydrogen peroxide is a natural by-product of cellular respiration.

@Keith Mowz  
Though for applications like that, you probably wouldn’t want to use a concentration higher than what you can get at the store.

Hydrogen peroxide is awesome shit and works way better than iodine. Stings a hell of a lot less, too. Clear liquid, pour it out over a cut, it foams up when it comes in contact with germs and debris, cleans it right up. Its basically the human version of oxyclean.

@biohazard  
I know it exists (I remember it being on The Simpsons), but I’ve never actually seen iodine solution before. I don’t recall ever hearing of camphorated oil or mercurochrome, but I think I’ve heard of witch hazel. Not really sure what it is though. I’ve definitely heard of hydrogen peroxide. I remember having some used on me to get rid of a couple warts I had.

@Background Pony #881A  
When I was a kid back in the ‘70s, there was always iodine in the medicine cabinet, along with mercurochrome, camphorated oil, witch hazel, hydrogen peroxide…
 
They’re all still around, just not as popular as they used to be.

Is Iodine really a thing that you put on minor injuries? Because I’ve never actually seen it in my entire life.
 
Is this a US/UK thing again?

@Keith Mowz  
No, I don’t want goiter. But I’m pretty sure I have enough I. So there’s no need to buy a vowel.

@Registered Anon  
Iodine deficiency isn’t typically an issue nowadays unless you pretty much never eat anything with iodized salt.
 
You wouldn’t want to get goiter, though, based on the picture they showed in the periodic videos mention of it. shudders

@Cirrus Light  
Dear Princess Twilight,
 
I’m confused.

@Registered Anon  
Likewise. I’m pretty sure the vast majority of people are that way.
 
Also, looking at profile pictures, we’re Twilight talking to filly Twilight in the comments to a picture of Twilight.

@Cirrus Light  
Yeah. Regardless of awareness of iodine requirements, I’ve never bothered to think about it. I’ve never had iodine deficiency problems.

@Registered Anon  
I probably do to. Getting a scan once or twice doesn’t really constitute a full diet xp

@Cirrus Light  
Huh. I’ve never actually gotten a CT scan. I probably get most of my iodine from iodized salt.

@Background Pony Number 17  
Iirc, I think iodine is also opaque to a band of harmful radiation, and would thus help block radiation that would otherwise penetrate deeper into your body and cause more damage (its opacity also being why it’s useful as contrast when getting ct scans. I’ve had plenty of that flushed through my body :q )

Fries only need Mayo! perhaps some Salt….

@Roy-of-Asturia  
Yes. I also like my fries with vinegar.