I've taken 6 allergex pills and i've crushed them... taken them all at once. am i going to overdose?

Allergy medications: it depends on what you mean by "allergy pills". They could be short-acting anti-histamines (such as benadryl) or longer acting ones such as claritin, (loratadine) zyrtec. The latter group act longer and therefore, more likely to give you dry mouth, higher heart beats with palpitations and perhaps blurry vision, or urinary retention. See your doctor if you have symptoms that bother you