What's the difference?

Can anyone tell me the difference between this:

Each tablet contains 200 mg of the active ingredient ibuprofen (as ibuprofen lysine).

Also contains: Povidone, sodium starch glycollate, magnesium stearate, hypromellose, talc, Opaspray White M-1-7111 B (contains hypromellose and titanium dioxide) and Opacode Black S-1-8152HV (contains iron oxide, shellac, soya lecithin and antifoam DC1510).

and this:

Each tablet contains 200 mg of the active ingredient ibuprofen (as ibuprofen lysine).

Also contains: Povidone, sodium starch glycollate, magnesium stearate, hypromellose, talc, Opaspray White M-1-7111 B (contains hypromellose and titanium dioxide) and Opacode Black S-1-8152HV (contains iron oxide, shellac, soya lecithin and antifoam DC 1510).

Any ideas?

Funny thing is, these retail for different amounts in Boots the chemists... The migraine ones are about 20p more expensive. Why?