You should not take more than 1200mg Ibuprofen in 24 hours, with the single doses being 1-2 200mg pills. Ibuprofen can cause kidney damage when used for a longer time or when the kidneys are already damaged. It can also cause gastritis if taken for a longer time (varies, some people get it after 2 days, some after 2 months).
And no more than 6x500mg Paracetamol in 24 hours. Paracetamol should not be taken within less than 6 hours of the preceding dose. It is important to know that paracetamol can cause liverdamage when overdosed. Do not drink alcohol when taking more than the odd Paracetamol.
Actually the packet information should tell you the single dose, maximum dose and all that. That is why it is usefull to keep it.