Method certain drugs and a grapefruit juice

[Werrunt09]

Grapefruit juice can affect how well some medicines work

Grapefruit juice and grapefruit can affect the way your medicines work, and that food and drug interaction can cause problems.

www.fda.gov

Drug Interactions with Grapefruit Juice

Grapefruit juice can interact with medicines and may change how well your medicine works or lead to serious side effects.

www.drugs.com

Grapefruit–drug interactions - Wikipedia

en.wikipedia.org

What do you think might be if I'll mix grape juice with glycine, 'cause i saw somewhere on the another forum that it might give you cardiac arrest? Have somebody already try it and and it didn't work out?
Also, whats you opinion of dying by the cardiac arrest, especially through Corvalol (tranquilizer based on the herb valerian root and the barbiturate phenobarbital) overdose?

Appreciate all of your answers