The present study has been proposed to investigate the long-term safety and efficacy of EnXtra in healthy adults habituated to caffeine.

Inclusion Criteria:

1. History of regular caffeine consumption.
2. Body mass index (BMI) of ≥18.5 and <25.00 kg/m2.
3. Fasting blood glucose < 126 mg/dl
4. Participants who are willing to complete all study procedures including study-related questionnaires and comply with study requirements.
5. Participants who are willing to abstain from use of any nutritional supplement and herbal preparation 48 hrs prior to study visit.

Exclusion Criteria:

1. Participants unable to abstain from caffeine-containing products for 12 hours prior to the site visit.
2. Known cases of type II Diabetes Mellitus.
3. Participants with uncontrolled hypertension (≥140/90 mm Hg), with or without anti-hypertensive medication.
4. Participants suffering from primary or secondary insomnia with/ without active treatment.