Combining Herbal Powder Extract
If this is an energy drink for humans then the active are either soluble in water or ethanol. The standard factory method is to use supercritical CO2 extraction. Check the method for production of instant coffee. Briefly, they mix coffee beans with CO2 at 40C (above critical temperature and under very high pressure. Then they filter it and drop the pressure. Components precipitate out. You can drop it to certain value, filter to second chamber, drop pressure slightly, filter move to third chamber, drop pressure to 1 Atm. In this case second chamber can have a single component. In case of coffee caffeine precipitates in second chamber. Now mix stuff from first and third chamber to get decaf.

Ethanol extraction works ok and is used by pharmacists. It is hard to concentrate it however. And ethanol is an active ingredient on its own.

Water extraction is the dirtiest way mainly because it is difficult to concentrate your material.