 [ Symptoms ] can ranitidine show up as amphetamines i was recently searching online to see if it was safe during pregnancy for heartburn & people were talking about how it caused them to fail for anphetamines which really worries me being almost 8 months pregnant & all [ Disease ] otc energy pills and supplements contain a large amount of caffeine sometimes 2 3 times the amount of a cup of coffee depending on the brand by increasing your daily caffeine dosage you may be increasing your risk of caffeine addiction and too much of any stimulant has consequences for the body such as elevated blood pressure and an increased heart rate this could be dangerous i would use these products with caution or not at all the risk can be greater than the value of the short energy boosts they provide