If someone with diabetes is having a hypo and is conscious, they should initially treat a hypo with 15-20g of fast acting sugary food or drink, such as: 5 glucose tablets. 150 to 200ml of a sugary fizzy drink (eg full sugar cola or lemonade)

My family friend used to always have jelly beans on hand for their diabetic daughters hypo attacks

You should be able to find enough information in Internet, for example at this website. But ask your GP if you have any doubt. https://www.healthline.com/health/type-1-diabetes-diet#overview1