Personally no I havn't tried but someone really close to me did, I found them, just in time, if I hadn't they would be dead now.
The reasons behind the attempt were that they had lost their daughter in a tragic accident, the doctor put them on anti-depressents, then instead of weaning them off them slowly, just stopped prescribing them, it was too much for them to cope with and the result was a state of mind where they just didn't think they had anything more to live for.
This person was my Mother, am glad to say she is now well and as happy as she can be with the loss of her daughter.
I know this was a desperate time and those who attempt suicide need all the help and support one person can give to another.