Patient received fluarix vaccine at the pharmacy while seated. She got up and walked about 10 feet. Rph noticed she looked pale. Rph told her to come sit back down. Patient sat in chair then started to pass out by falling to her side. Rph tried to help guide her to the ground. Pt did slightly bump her head, but it was not a hard fall. Rph told tech to call EMS and EMS came. By the time they came patient was doing ok. Patient had her blood pressure checked by EMS when they came but refused the ambulance because she was starting to feel better. Patient explained that she has anxiety and was worked up about getting the vaccine. Rph gave her a sugary drink to bring up her blood sugar and crackers to keep her sugar up. Rph stayed with her for at least a half an hour afterward to ensure she was ok. Then Rph insisted to walk out with her to her car. She was looking and feeling much better at that time. Due to patient stating she has anxiety and was worked up about getting a vaccine and she said she did not eat anything since breakfast time this does NOT seem to be related to the vaccine itself. This seems to be a stress/anxiety response and possibly a drop in blood sugar.