My son has daily injections of Genotropin. We travelled with the mini-quick "pens" from US to Istanbul last summer with a three week supply. We packed them in a small, dedicated carry-on cooler but it did not trigger an inspection at security control at any point on any leg of the trip.
However, I concur with other advice about carrying them in the originally labeled packaging and having a copy of the prescription in your travel documents.
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Cheers,
Greg