Ok lets see if I got this right.
Total bill paid = €157
Total to claim back through MED1 => €90 * 40%
Total to claim back through HSE =>€157-90 = €67
What percentage of the €67 do I get back?
I can also claim money back through my VHI. However the tax year runs from 1st of April but my VHI runs from the 23rd of August. How do I fill this into the MED1 form?
You get the whole 67 back.
I am not aware of any VHI reimbursement of drugs payments, but if your plan allows it, there is a section on the MED1 form clearly marked - amount reimbursed by health insurer.