As an excellent appetite-suppressing agent, caffeine reduces hunger pangs and is ideal for intermittent fasting. Drinking coffee in the morning keeps you energized the whole day while curbing the hunger for junk food and sugary items. To stay more focused and mentally active, the ECA stack adds caffeine which works alongside ephedrine. While taking ECA STACK alternatives, users must have high potassium ion levels or they can also take potassium supplements or foods with high levels of K+ inside such as banana, chia seed, chicken, coconut water and etc. This is to avoid the unwanted side effects produced by ECA stack which can be overcome using potassium-sparing supplements.