type 2's on metformin only tend not to have hypo's, but they can do sometimes. but then so can anyone, people without diabetes have sub 4 blood sugars. it usually said that metformin doesn't cause hypo's because it doesn't cause extra insulin production.
the only definate way to tell if you are hypo is to test!
for me symptoms are fast heartrate sweating, shaking hands, feeling irriatble and impatient. depending how low I am how severe these symptoms are
