Prices of DPP-4 inhibitor Galvus (vildagliptin) and Galvusmet (vildagliptin+metformin) latecomers show that the original Galvus’s price is still set high, but the price of the original Galvusmet (50/500mg) is set at the same level as its salt-modified and generic versions.

Also, Galvus’s price had fallen 30% with premium pricing after the introduction of generics, but Galvusmet’s price fell only 25.3%. Why the difference?

This is due to the different standards in pricing between single-agent and combination drugs. Galvusmet’s pricing did not follow the general formula.

First, combination drugs are not applied the premium pricing formulas. For original single agent dru