B737-700
Flight Attendant Current
Situational Awareness; Physiological - Other
Deviation / Discrepancy - Procedural Security; Flight Deck / Cabin / Aircraft Event Passenger Misconduct; Flight Deck / Cabin / Aircraft Event Illness / Injury
General Physical Injury / Incapacitation
Human Factors
Once airborne; the C Flight Attendant came to the back galley and informed me someone had put something in the A [Flight Attendant]'s water. I decided to go up front and check on her. When I arrived; she was on the phone with the pilots. When she got off the phone; she showed me her water bottle and it was a milky cloudy substance that had a strange odor I had never smelled before. I advised her that when we land she needed to complete [a report] and call [company operations center]. She said she felt fine and didn't think it was necessary.Later in the flight; the C Flight Attendant went forward so they could let the pilots out to use the lavatory. A few minutes later; I was paged over the PA to come forward. I quickly went to the front to find 2 passengers and the C [Flight Attendant] in the front galley. I saw that the A [Flight Attendant] was laying on the jumpseat. I sat her up and asked if she had any allergies and if she was taking any medicine. She said [drug] and then her eyes rolled back and she fell back again. The C [Flight Attendant] paged for medical assistance and a physician came forward with his medical license card in hand. I verified and allowed him access to [the C flight attendant]. He used the EMK to check vitals and was going to initiate an IV for fluids to help bring her blood pressure down. However; the A [Flight Attendant] came around and was able to talk with the physician. The pilots attempted to establish a patch with [Airborne Medical] but were unsuccessful. The physician recommended that the A [Flight Attendant] remain seated and try to relax for the rest of the flight. We relocated the A [Flight Attendant] to seat 1C and she remained there until we arrived at the gate in ZZZ.The physician remained in close proximity of the A [Flight Attendant] should her condition deteriorate in the remainder of our decent. I asked that the C Flight Attendant begin to close down the forward and aft galley while I went and collected medical notes and gathered relevant information from the A [Flight Attendant] as well. The C [Flight Attendant] and I agreed and advised the pilots that I would remain forward and occupy the 1L inbound jumpseat for landing and the C [Flight Attendant] would occupy the aft jumpseat for landing. The pilots advised that EMS would meet the flight upon arrival.
Flight Attendant reported that another Flight Attendant became ill after consuming a cloudy drinking water.