To enable the Supplements widgets, tap the gear icon to open Settings, scroll to the Home Screen widgets section, and turn the Supplements switch on. You can also enable the Ingredients widget if you want to track the consumption of particular ingredients/substances.

Tap the Plus icon and enter supplement information. You can do it manually or by scanning a barcode from the package.

If the product is found by barcode - check the correctness of the data in the Macro and Ingredients sections, edit them if necessary, and then tap the Create Supplement.

Remember to pin it to the Home Screen for quick access.