Brain Juice(1998)

R.L. Stine

Carefully, the alien poured the purple liquid into the bottle. "Our only supply of Brain Energizer Fluid," he muttered. "Let's hope it works.

"Hurry, Morggul," he said, giving his fat partner a push with all four tentacles.

Morggul gazed at the purple bottle. His lower mouth frowned. His upper mouth said, "No human has ever drunk this formula. How do we know what side effects it will have? Maybe it will kill them!"