At that time 86 lbs. very low; This is a spontaneous report received from contactable reporter(s) (Consumer or other non HCP). The reporter is the patient.  A 68-year-old female patient received BNT162b2 (BNT162B2), on 19Oct2021 as dose 3 (booster), single (Lot number: FF8839) at the age of 67 years, in right arm for covid-19 immunisation. The patient's relevant medical history included: "Bad cataracts", start date: 2009 (unspecified if ongoing), notes: Bad cataracts Diagnosed as being bad 2-3 years ago. Previously just had cataracts for 10 years.; "Uveitis" (unspecified if ongoing); "Genital herpes", start date: 1996 (unspecified if ongoing); "Breast cancer", start date: 1999 (unspecified if ongoing), notes: She is a breast cancer survivor. Breast cancer diagnosed 1999.; "Migraines" (unspecified if ongoing), notes: She gets Migraines - started 30 years ago.; "Allergic to eggs" (unspecified if ongoing), notes: diagnosed when she was a kid - 55 years ago.; "Penicillin allergy" (unspecified if ongoing), notes: diagnosed when she was a kid - 55 years ago.; "Anxiety" (unspecified if ongoing), notes: Been on it for many years.; "Hypothyroidism" (unspecified if ongoing), notes: Started 40 years ago.; "hyperthyroidism" (unspecified if ongoing), notes: Started 40 years ago.; "Lumpectomy" (unspecified if ongoing). The patient's family history included: "High blood pressure" (unspecified if ongoing); "High cholesterol" (unspecified if ongoing); "Cancer" (unspecified if ongoing); "Bad allergies like asthma" (unspecified if ongoing), notes: Mother and father both had bad allergies, like Asthma, and used inhalers and father as well. Concomitant medication(s) included: SYNTHROID taken for hypothyroidism, hyperthyroidism; ATIVAN taken for anxiety. Vaccination history included: BNT162b2 (1st dose, Lot EN6207, expiration is Jul2021, injected in right arm), administration date: 16Mar2021, when the patient was 67-year-old, for COVID-19 immunization; BNT162b2 (2nd dose , Lot EW0162,, expiration is unknown, injected in right arm.), administration date: 13Apr2021, when the patient was 67-year-old, for COVID-19 immunization. The following information was reported: WEIGHT DECREASED (non-serious), outcome "unknown", described as "At that time 86 lbs. very low". Relevant laboratory tests and procedures are available in the appropriate section.  Additional information: Never took Penicillin just came back on the test and was told not to take it or any of it's relatives, so she never did. No medical treatment required. Her doctor just said to take Ativan. They thought it was anxiety, but she knows it wasn't. She knows what she usually gets when she is anxious and this was not it. She does not have the Ativan to provide a lot or expiration. 2 drugs she took together that she had a similar reaction to were: It was Ativan and very small dose of Lexapro and they were taken about 3 hours of each other and then she woke up in the middle of the night with this same kind of thing and her doctor said it was a reaction to the Lexapro and she should stop taking it. She does not have it to provide lot or expiration and has not taken it since then. Ativan, did not help with her anxiety. She did not have product with her to provide manufacturer, lot or expiration. Product strength and count size dispensed: 0.25mg, count not provided.