You don’t need it to fly with your medications. I would recommend keeping them in the original bottle though so that they can see that it is prescribed to you.

I flew out to Texas with ADHD medication and I didn’t have that. Just keep it in the bottle with your prescription on it

Yeah don’t get a disability card those are primarily for people with mobility issues and other things that might interfere with their ability to fly. What I usually do is just put all my medications in a separate ziplock bag (and sometimes double bag). This is great because I’ve sometimes had the cap of the medication pop off and if it’s in a ziplock it’s still safe. But also it just allows me to put them out during security like you would for technology. I’ve never had an issue.

I've never flown in an airplane before, but absolutely keep your medications in the prescription bottles. Technically it is illegal to carry unmarked medication on you, and you could get held up because they don't have any other proof of what substance it is. When I travel, I still take my daily pill boxes with me because they help me make sure I take it. But I leave it empty and don't organize my pills until I get to where I'm going.

check what schedule each medication is & the flying restrictions on each one/the laws around it where you're going

I just flew to Tennessee with all my meds in my carry on and they never said a thing!

UPDATE: I didn’t need a card it is more for declaring machinery discreetly than a necessity for traveling. I brought all of my medications in their correct bottles and no one in TSA even gave them a double glance. The kids did come off a time or two so I was definitely glad they were in ziplocks.