Guarana: It contains a high amount of guaranine, a chemical substance with the same characteristics as caffeine. This makes Guarana a stimulant similar to coffee. The average cup of coffee contains 65-130 milligrams of caffeine; some very strong guarana-based syrups can contain up to 350 milligrams. Your drink contains 530 milligrams, which is similar to consuming about 4 cups of strong coffee.
Siberian Ginseng: A substance that strengthens the body, helping it return to normal when it has been subjected to stress. Standardized extracts are often taken at a rate of 100 to 200 milligrams daily. Your drink contains 114 milligrams, so I would assume this was a safe amount.
Milk Thistle: Milk thistle has been reported to have protective effects on the liver and to greatly improve its function. The active compound in Milk thistle is silymarin. Silymarin is typically administered in amount ranging from 200-500mg per day. 286 milligrams seems a suitable dosage as well.
Ginkgo biloba: It is said to be effective in improving the blood flow to the hands and the feet as well as stimulating the brain and reducing short-term memory loss. It increases blood flow to the brain, the uptake of glucose by brain cells, and has been said to improve the transmission of nerve signals. The standard dosage for this herbal supplement is 80mg 3 times a day. Your drink contains 109mg. This could be considered a little much for one dose.
Schizandra: Acts as a stimulator of central nervous system improving memory, concentrating attention, and shorting reflecting period. It’s helpful for a person with mental fatigue and reduced mental working ability. Schizandra improve brain blood flowing. Toning influence slightly increases blood pressure, accelerates heart rate, normalizes parameters of the heart work. Recommended dosage is 1-3 grams per day. 112 milligrams seems to be safe.
**I'm not exactly sure about the side effects when all ingredients are combined, but it sounds like you consumed a little much energy tonic for one dose. I wouldn't think those drinks were very safe and would recommend that you not drink them.**