Plz can someone help. I have been a user for many years. I used. To use citric when injecting heroin but I was on a methadone course and I relapsed and starting snorting heroin again. IWhen I was kicked off my method one and stupidly decided to inject again as snorting was not effecting me or helping as I had no methodone. I was at a friends house and she used lemon juice and said it did same as citric . I have now been left with a hole the seize of a 50 p piece and each day its getting deeper. I'm so afraid to go to hospital but not sure where to turn for advise. Could I maybe email a picture of the wound to one of your nurse to get advise if I can treat it? I've never been on these sites so nt sure how it works. Can anyone help plz thanks.