Chest pain; increased heart rate; Weakness with standing; This is a spontaneous report from a contactable consumer (patient). A 18-year-old female patient received first dose of BNT162B2 (PFIZER-BIONTECH COVID-19 VACCINE, Solution for injection, Lot Number: ER8733, Expiration date: Unknown), via an unspecified route of administration, administered in left arm on 08Jun2021 at 15:00 (at the age of 18-year-old) as DOSE 1, SINGLE for COVID-19 immunisation. Medical history included narcolepsy from Mar2021 and having it for about six years, she was treated for with Adderall; delayed sleep phase syndrome; allergy; asthma from years ago when she was 10 or 11 years old; ongoing iron low from two and half years; allergic to grass and trees as well; started to get shot for these allergies five years ago and allergic to sulfa (her sister was also allergic to sulfa) and so they never gave patient sulfa until one doctor prescribed an antibiotic for her in the sixth grade, and she had a reaction. She does not know the name. Patient reported family history of heart condition but not exactly, what she was experiencing, they really just had high cholesterol and high blood pressure. Patient did not receive any vaccine 4 weeks prior. Concomitant medications included amfetamine aspartate, amfetamine sulfate, dexamfetamine saccharate, dexamfetamine sulfate (ADDERALL) taken 30mg tablet twice daily orally for narcolepsy from an unspecified start date and ongoing; iron taken 25mg once daily orally for anaemia from an unspecified start date and ongoing. The patient reported she has type one Narcolepsy and she switched her medication about the time of her vaccine maybe two weeks before. She was taking Adderall 20mg twice daily and she was increased to 30mg twice daily. Reported she was experiencing weakness with standing before receiving the vaccine because she was anaemic and takes iron for that, but after the vaccine it was worse. The patient reported that she received the first dose of the Pfizer COVID 19 vaccine 08Jun2021 at 1500 PM in the left arm. She noticed about three days later on 11Jun2021, increased heart rate; with chest pain; and then weakness with standing simultaneously. She did see her doctor on 16Jun2021, and her heart rate was 122 at rest. The next day when she went to get allergy shots and the heart rate was 113. The chest pain; increased heart rate; weakness with standing were all persisted. Patient had to see her doctor again the next day. He made a note of her heart rate and was trying to find out if it was the Adderall or the vaccine that caused. The caller has been evaluated by HCP since receiving the vaccine, however it was to follow up on her narcolepsy. At this HCP visit she was told to have a resting heart rate of 122 beats per min. The patient did not visit emergency room for AE. Patient visited physician doctor for narcolepsy and the allergy clinic but no one for the heart rate. The reporter assess the seriousness of case as non serious. The patient underwent lab tests and procedures which included heart rate: increased on 11Jun2021; at rest was 122 on 16Jun2021; and heart rate: was 113 on 17Jun2021. The outcome of all the events was not resolved.   Follow-up attempts are completed. No further information is expected