Often times, athletes consume caffeine in several different forms, usually before training and major sporting events. For athletes, caffeine can improve one’s ability to perform over a long period of time, and can make the difference between winning and losing. Alternative forms of caffeine can be harder to dose and remain consistent enough to get the most out of its effects. Further research shows that the amount of caffeine in specific supplements don’t reflect the label amount accurately, nor do they show the same number and quantity over a period of time.  With FIRST, synthetic caffeine is used to have full control and guarantee the proper dosage for optimal performance, clearing any hazard of inconsistency.
As a gum, it is more efficient in consumption and is also absorbed much faster in contrast to beverages. Through the mucus membranes, FIRST is absorbed within 10 minutes of chewing; while drinks and pills absorbed through digestion take an average of 45 minutes. 
Learn more about all the ingredients used in FIRST here.
Learn more about how the FIRST works to provide top athletic performance here.
List of research references:
Ad 1. A review of caffeine's effects on cognitive, physical and occupational performance. McLellan, TM et al. 2016.
Ad 2. Ref. Rafael Azevedo et al. EJAP. 2016
Ad 3. Caffeine: a double-blind, placebo-controlled study of its thermogenic, metabolic, and cardiovascular effects in healthy volunteers. Astrup, A et al. 1990
Ad 4. Caffeine ingestion and cycling power output in a low or normal muscle glycogen state. Lane, SC et al. 2013.
Ad 5Post-study caffeine administration enhances memory consolidation in humans. Borota d. et al. 2014.
Ad 6. Caffeine consumption around an exercise bout: effects on energy expenditure, energy intake, and exercise enjoyment. Schubert MM et al. 2014
Ad 7. The rate of absorption and relative bioavailability of caffeine administered in chewing gum versus capsules to normal healthy volunteers. Kamimori, GH et al. 2002.
Ad 8. Variability of Stimulant Levels in Nine Sports Supplements Over a 9-Month Period. Attipoe et al. 2016.
Ad 9. Chronic Ingestion of a Low Dose of Caffeine Induces Tolerance to the Performance Benefits of Caffeine. R, Beaumont et al. J Sports Sci 1-8. 2016.
Ad 10. Coffee consumption and cognitive function among older adults. M, Johnson-Kozlow et al. 2002