My legs felt rubbery; not feeling well at all; I think I got 3ml; This is a spontaneous report received from a contactable reporter(s) (Consumer or other non HCP) from medical information team. The reporter is the patient.  A 61 year-old female patient received bnt162b2 (BNT162B2), administration date 25Mar2021 (Batch/Lot number: unknown) as dose 1, single for covid-19 immunisation. Relevant medical history included: "COVID-19" (unspecified if ongoing), notes: I've had COVID before. The patient's concomitant medications were not reported. The following information was reported: LIMB DISCOMFORT (non-serious), described as "My legs felt rubbery"; MALAISE (non-serious), described as "not feeling well at all"; OVERDOSE (non-serious), described as "I think I got 3ml".  Additional information: clinical course: It was reported that patient got first dose on 25Mar2021. It looked like a huge amount. Patient had severe symptoms. Her legs felt rubbery, and she had COVID before. She saw the syringe was on 3 and think got 3ml. She sure didn't get 0.3ml. She sure other people got too much too. She reached out to the pharmacy manager, but they are not responding. She complained to the hospital administrator and left a voicemail. Patient question the dose it was sitting on the table in front of her, and question how much it was, it looked like a huge amount. She did not know anything about what the dose was but the RN who was giving it to her, said didn't know, didn't draw it up. So there was a nurse who was administering the site, she was in charge of the site standing right behind patient and turned to her and patient said look at this amount, it's huge. She looked at the syringe and, which was on 3 and she said that's correct and she said that's what it should be and that it's a standard dose. Patient assumed she knew what she is talking about and everything. She didn't really have too much problem on first day, she did have her abdominal felt like, she doesn't know if this important or not, she just skip over it but the next evening she went calling to the hospital for not feeling well at all. All of this know is because of the vaccine or not. But nobody ever calls me back, the doctor will call, told that they'll call but nobody ever did call and when patient started improving on like Saturday evening. But found out yesterday, googled and found out that the dose was 0.3 is the Pfizer dose and patient pretty well aware of the syringes and, have a 1 ml of syringe here for B12 shot and put that 0.3 and that was almost nothing compared to what I got, I got a much huger dose in it. I believe I got 3 ml, so have reach out to hospital yesterday when patient found this out and talk to the pharmacy manager and she said that she will talk to the people like registered nurse and the one in RN on administering site if she have to question to. And she will try to find out what happen because patient believe that probably everybody got the dose and she believe got the 10 times a dose of COVID.  And also put in a report with health department the nobody is getting back from the hospital, so don't know what to do was trying to get information from Pfizer for my second shot, patient doctor said should just get it, patient don't think he just said something like that just happens to come to light. But don't know how come to light if they are not going to admit that they did it. And don't know the health department they said that we would do the right to know the inventory for that day or something and don't know if they going to tell anything. Patient pretty concerned about what will happen to her the fact that got 10 time the dose and then do get back the same time and get the shot, is that wrong or not or what should patient do. She knows they told her, the person who answer the phone here for Pfizer here said that you can give that information now. That's up to patient doctor, already ask doctor just kind of left on her own here now and believe got 10 doses along with probably lot of other people on that day.  No follow-up attempts are possible; information about lot/batch number cannot be obtained. No further information is expected.