Grapefruit strain has THC level of Grapefruit averages at 15% and tops off at 20% in some crops. It’s been described as being a good strain for a wake and bake, often energizing the consumer and leaving them feeling more free to socialize and become more talkative. For some, it’s known to prompt deep thinking and introspection. Many people use this strain to combat mental negativity. Some have noted it can help alleviate headaches and migraines.