Dreams about snakes can often symbolize feelings of fear, transformation, or hidden issues. In your dream, the snake morphing and biting you may indicate a situation in your life that feels threatening or is causing you anxiety. The fact that it was a water moccasin, a venomous snake, suggests that this situation may have serious consequences if not addressed.

The setting of your parents' house could represent feelings of safety, family ties, or unresolved issues from your past. The snake splitting its head and transforming into a flower shape might symbolize the duality of a situation—something that appears threatening but also has potential for beauty or growth.

Giving the snake to someone else could imply that you are trying to transfer your burdens or fears to others, perhaps indicating a desire to avoid dealing with those feelings yourself. The shutting down of your body signifies the impact that this stress is having on you, while the introduction of antivenin suggests that there is hope for healing or recovery.

Consider reflecting on any current challenges or emotions you are facing in your life. It may be beneficial to confront these issues directly rather than avoiding them. Seeking support from loved ones or professionals can also provide you with the "antivenin" you need to heal and move forward.