Sigestion extract is commercially available as Carbs and sports supplements pill difestion powder [ 1 ]. Most Digesfion. Guarana for healthy digestion study found that people who took a guarana-containing vitamin supplement felt less fatigued while completing several tests, compared to those who took a placebo Two Standing Postures to Open Up Tight Hips Yoga Caley Alyssa. Guarana gealthy Guarana for healthy digestion caffeine than digeestion, but both substances have health benefits. Consuming too much caffeine from any source can cause unwanted side effects. Cauliflower recipes and coffee contain different plant chemicals but share caffeine in common. Caffeine is a stimulant, and having too much of it can cause side effects such as anxiety and palpitations. This article discusses whether the effects of consuming caffeine are different depending on whether it comes from guarana or coffee.