I know they are listed as permitted, but it depends on the person at security. My friend had hers taken away from her on the return trip home from Fort Lauderdale by the US security. My best advise is to pack these in your checked baggage. It's very hit and miss what you can take in your carry-on. This is why we only put our personal medication in our carry-on. Everything else goes into our check baggage. We even put our dietetic blood test needles in our check baggage.
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