Review product identity, package amount, serving basis and nutrition per common quantity separately. Update new consumption using the current pack without rewriting well-supported old meals.
Identify what changed before replacing your reference
Check the exact variety and product name first, then package quantity, serving size, ingredient list and nutrition panel. New artwork alone does not prove a recipe change. Conversely, familiar artwork does not establish that the contents remain identical. Your task is to identify a relevant difference in the product information, not infer a nutritional effect from the advertising design.
FSANZ explains how ingredient lists identify ingredients and characterising components. Use the current list as part of the product check, alongside the panel rather than as a substitute for it. If you avoid particular ingredients, review the current label on its own terms. A saved diary record or previous purchase does not verify the contents of a new pack.
Compare nutrition on the same quantity basis
Use this explicitly illustrative comparison: an old panel lists 120 kcal per 100 grams and a new one lists 96 kcal per 80-gram serving. Dividing 96 by 80 and multiplying by 100 gives 120 kcal per 100 grams. The apparent reduction is explained by serving size, not a lower energy concentration. These invented figures demonstrate label comparison only.
Now suppose the new package is 160 grams rather than the old 200 grams. Eating a whole pack changes from an illustrative 240 kcal to 192 kcal on the same per-100-gram basis. The recipe could be unchanged while the whole-pack entry needs revision. Compare protein, carbohydrate and fat on a common basis too, before deciding that the formulation itself changed.
Start a new reference without erasing old context
Keep the current pack details in your companion reference and identify when you began using it. If an older meal genuinely used the older package, its original calculation may still be the right historical record. Do not apply the new serving size backwards merely to make all entries uniform. Only correct old entries when you have evidence that their original basis was wrong.
If you no longer have the older package, avoid reconstructing its recipe from memory. Mark the old reference as uncertain and use the current label for current meals. For a clear mismatch in scanned information, check the physical package or manufacturer’s information before accepting it. Successful product recognition does not by itself establish that a nutrition result describes this version.
Recheck the next copied meal in Nexal
Download Nexal for Android, create your account and try free manual meal and macro tracking using the current pack. Calculate your portion from its current panel and enter those values through the supported workflow. Keep package-version context in your own notes. This guide does not depend on automatic reformulation alerts or a product-version database in Nexal.
Before copying a recent meal, ask whether its package amount and calculation basis still match. If they do not, revise today’s entry rather than carrying forward the old whole-pack total. Premium barcode scanning is optional and should be checked against the pack. One careful update can provide a useful new reference without treating every older record as an error.
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Frequently asked questions
Does a smaller per-serving number prove reformulation?
No. First compare the serving sizes and convert to a common quantity. A different serving alone can explain the change.
Should I rewrite all past entries using the new label?
No. Keep historical meals tied to the product actually consumed, and correct older records only when you have evidence of an error.
Sources and editorial notes
Prepared by Nexal for general education. This is product-team content, not an independent review or a clinically reviewed programme. Exercise and nutrition examples are illustrative, not personalised recommendations.
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