Can you get poisoned if you eat immature jackfruit?

No.

Immature jackfruit does not contain any toxins, moderate consumption will not do any harm to the body, but immature jackfruit is best to speed up before eating. Because raw jackfruit contains more starch, eating too much easy to cause abdominal pain, abdominal distension, and other indigestion, and not ripe jackfruit sugar accumulation low taste light, the taste is hard, and mature jackfruit taste is poor, so it is suggested that jackfruit is not ripe to eat better.