Hi Vikki
I recently was given a woman to support by phone by the Association of Post Natal Illness who is on Mirtazipine and I have to admit it is a new one on me so I have done my best to find out about it.
See this link for a page specifically on the type of dissolving tablet you are on:
www.medicinenet.com/mirtazapine_disintegrating_tablets-oral/article.htmThis is a US page I could not find a good UK site for the information.
This is what I have found out so far:
It is a newish drug but derived from a very old type of anti depressant ( indeed of the type I was prescribed as a depressed 17 year old - it is a tetracyclic antidepressant.
the precise mechanism of action of this class of antidepressants is not known, they increase the amount of noradrenalin and serotonin in the brain. Noradrenaline and serotonin are neurotransmitters, chemicals that nerves use to communicate with each other.
Mirtazapine also acts as an antihistamine similar to diphenhydramine (Benadryl).
Antihistamines make you drowsy.
I think your doctor is trying this because all the other Anti Ds you have been on have been of the newer SSRI, ( selective serotonin reuptake inhibitors) type and some people just do not get on with these so then they try the older AntiDs - either tetracyclic, Tricyclic or MAOs Anti Ds ( I also had these when I was young.
Mirtazapine specifically was approved by the FDA in 1996. Thi sis they US I can nto find out when it was approved in the UK.
in the US where it has been used longer it is called Remeron, does you packet have a brand name on it??
I think at the end of the day it does not mater what it is, so much as whether it works for you.
It cold be you are someone who does not respond well to the SSRIs such as Prozac
Some stuff writen about the r=effectiveness and side effects:
In US controlled clinical trials of 6-week duration, the most commonly reported adverse events associated with REMERON® (mirtazapine) Tablets therapy were: somnolence ie sleepyness (54%), increased appetite (17%), weight gain (12%), and dizziness (7%). In short-term clinical trials, 10.4 % of patients discontinued therapy due to somnolence. In a pool of premarketing US studies, including patients in long-term, open-label treatment, 8% of patients discontinued therapy due to weight gain.
Patients, their families, and their caregivers should be encouraged to be alert to the emergence of anxiety, agitation, panic attacks, insomnia, irritability, hostility, aggressiveness, impulsivity, akathisia (psychomotor restlessness), hypomania, mania, other unusual changes in behavior, worsening of depression, and suicidal ideation, especially early during antidepressant treatment and when the dose is adjusted up or down.
Anyway this is what I know so far but really your GP would not have given them to you if they were not worth trying so give them a go and see how you feel in a couple of weeks.
Medication is not a cure for PNI but is can help you deal with the effects and lift your mood so that you can have time to recover.
I will get back to you when I know more
All the best