The singer took some cold remedy pill with a sleep aid upon boarding a flight from New York but soon started to feel unwell.
"OMG, I didn't know Nyquil could do this to you. I took the pills tho. Can't stomach cough syrup. Trying to be proactive on this flight," she wrote on her Twitter.
Another message followed shortly that simply read: "I feel so wierd."
The 'Sandcastle Disco' star collapsed upon arrival and was rushed to a nearby medical centre.
"Woaah...... How'd I end up in the hosptal?.... Woke up to 8 random people over me, laid out on the floor in baggage claim!.... Guess I passed out! Scary. Hooked up to IV now . Apparently I'm super dehydrated," she added.
She updated with "I'm out!" upon her release.