There is evidence to suggest that the effectiveness of minimum unit pricing as a policy may be influenced by the price per unit at which the minimum unit price (MUP) is set.
Mae tystiolaeth i awgrymu y gall effeithiolrwydd isafbris uned fel polisi gael ei ddylanwadu gan y pris fesul uned sydd wedi'i bennu fel isafbris uned.