According to a Parkinson specialist at AUH (American Univ. Hospital in Beirut):
This is my opinion as an American Board certified neurologist who deals with the complications of Deanxit in his clinic in Lebanon.
Deanxit is a combination of 2 medications: an anti-depressant and an anti-dopamine medication.
The anti-dopamine medication decreases the motivation of the patient (namely, makes him/her feel that he/she doesn't want to do anything and/or doesn't care about anything) and therefore the patient quits complaining about whatever he/she used to complain about. This makes doctors misinterpret this response as the patient has improved while all what happened is the patient has quit complaining.
The anti-dopamine medication sometimes also cause parkinsonism (tremor, slowness of movements and muscle stiffness) and imbalance (especially in elderly patients). These adverse effects resolve after a few days or weeks after stoping the medication. However, this medication can cause involuntary movements, especially in the face, tongue and lips that occasionally may become irreversible even after stoping the medication.
The anti-depressant medication in Deanxit is often insufficient to treat depression or anxiety because the dose of it in Deanxit is not high enough.
Although the addictive potential of Deanxit has not been adequately studied, it is often hard to stop the medication after taking it for months, so in this sense, patients may become dependent on it.
There are plenty other anti-anxiety medications that are non-addicting and much safer and effective than Deanxit, namely selective serotonin re-uptake inhibitors (such as paroxetine and escitalopram, also known as Seroxat and Cipralex, respectively) if used at adequate doses. These medications decrease the need for addictive medications like benzodiazepines (Xanax, Lexotanil, Valium, Rivotril...) that are also used transiently for the treatment of severe anxiety.
By the way, Deanxit is made in Danemark but is not approved for use in Danemark or in the USA. It is mostly available in the Middle East and India. This should give you a clue about its safety and effectiveness.
My personal experience with Deanxit is
1) It is so good for 3 days (esp. with Panadol Extra or Norgesic)
2) Do not use Deanxit continously for more than 2 weeks.
My father used Deanxit continously for about 20 years --- and he died form Parkinson!