How safe is the medicine Incidal

Incidal is a common anti-allergy drug used in South Asia- any information about the side effects of the drug will be much appreciated. I came across the following on Essential Drugs;

Dear All,

Mebhydrolin Napadisylate (Incidal) is a commonly used anti-allergic drug. It is prescribed for pruritis, urticaria, and allergic rhinitis. It is excessively prescribed and used in Pakistan. We cannot find its prescribing details in the late editions of the BNF. A search through the MEDLINE revealed that there have been report of agranulocytosis and granulocytopenia reported to the Australian Adverse Drug Reaction Committee as early as 1984. We are very concerned about its availability
in Pakistan. Can anybody provide as to:
1. What is the current status of this drug in the world?
2. Why was it banned?
3. Which were the countries from where it was withdrawn?
4. Is it still manufactured and marketed in Germany, the country of origin? The drug is manufactured by Bayer of Germany.
5. The FDA has not registered it ever. Which other countries have not given registration to the product and why?
Thank you for your cooperation.

Ayesha Ahmed.
Incharge Drug Information Helpline.
Pakistan.

Related;
Incidal Banned in Pakistan