Upo is also called Kalubay, Long Gourd, or Bottle Gourd and is like cucumber, but mostly you cook it. It has many health benefits. Besides cooking you can also make it into juice in your juicer or blender and drink it on an empty stomach early in the morning. You can put it through a strainer to get the pulp out when you like without pulp. You can add for example a little mint, cumin powder. pepper, lemon juice to your taste. Do not mix Bottle Gourd juice with other vegetables when drinking it. Taste a little piece of Bottle Gourd before juicing it. When it has a bitter taste, discard it. When bitter it is toxic and can cause vomiting, diarrhea, or worse when drinking it raw. Besides this, the juice has to be served fresh. Don't store it, even in the refrigerator. Don't drink too much. No more than 100ml a day is recommended.
