A label can list twenty ingredients and still be thin where it counts, because the amounts per serving tell the real story. Compare the percentage of daily value or the milligram figure, not the order of the marketing text. A long ingredient list is not the same thing as a well-covered one.
Watch for units too. Imported packs may use IU for some vitamins while local products use mcg, and both are legitimate ways to print the same nutrient. Converting on the shop floor is not realistic, so it helps to write down the figure for one or two nutrients you care about — vitamin D, zinc, or vitamin C are the usual candidates — and read the same two lines on every pack you pick up.
Bring the numbers, leave the front of the box. Serving size matters as much as the ingredient column: a tablet that asks for two per day delivers a different total than one that asks for a single serve, even if the per-serving figures look identical.