Drinking alcohol and taking illegal substances will not help you get over depression.
If anything they will enhance it and it may take longer to get over your depression.
Although, there are no studies or human tests at this time, many scientists don’t know if the fall of serotonin causes the depression or the depression brings on the dip in serotonin levels.
Until they can test it on a living human, they won’t know.
There are anti-depressant medication such as SSRIs (selective serotonin reuptake inhibitors) and SNRIs (serotonin and norepinephrine reuptake inhibitors) that help with the symptoms, they don’t stop the depression.
They just cover it up.
Scientists do know that a protein rich meal such as chicken, nuts, or fowl contains high levels of tryptophan lowers the level of tryptophan and serotonin.
This is because the amino acids and the tryptophan fight to enter the brain, so only a little amount gets to the brain.