Clients with diabetes who take isoniazid (INH) may require more frequent monitoring of blood glucose

Clients with diabetes who take isoniazid (INH) may require
more frequent monitoring of blood glucose levels. What effect does isoniazid
have on glucose levels?

1. It may decrease glucose levels.

 2. It has no known effects on glucose levels.

 3. It may increase glucose levels.

 4. It causes rapid rises and falls of glucose levels.