Fast&Up Melatonin And L Theanine Effervescent Tablet is an ayurvedic medicine Secondary and off-label uses of Fast&Up Melatonin And L Theanine Effervescent Tablet have also been mentioned below. The correct dosage of Fast&Up Melatonin And L Theanine Effervescent Tablet depends on the patient's age, gender, and medical history. This information has been provided in detail in the dosage section.