Ephedrine is neither synthetic nor is it adrenelin.
OP you are advised to seek the advice of a physician before starting any regimine of medication. Especially one where the intent is as dangerous as forced sleep deprivation. This is used as a form of torture for gods sake.
From various scources on the web;
Ephedrine is derived from the ephedra plant. It is also known as Ma Huang and has been used in China for medicinal purposes for thousands of years. Ephedrine is metabolized to norephedrine, which is responsible for the central nervous system stimulating effects of the drug.
It belongs to the monoaminergic group which consists of an amine molecule containing one amino group (NH2). Examples of other monoamines include: Serotonin, dopamine, norepinephrine (noradrenaline), and epinephrine (adrenaline).
Ephedrine can cause stroke,high blood pressure, and heart problems. It is particularly dangerous to people who have high blood pressure. The FDA reports nausea, irregular heart beats, insomnia, nervousness and disorientation as adverse effects of ephadrine. According to Food Labeling News, CRC Press, Inc., September 28, 1995, reported that Nature’s Nutrition Formula One was associated with hyperactivity, diarrhea, dizziness, disorientation, numbness, anxiety, chest pains, breathing difficulty, heart palpitations, irregular heartbeat, hypertension, depression, headaches, and insomnia. Three instances of death were associated and several involved heart attacks, seizures and strokes