But side effects from Red Bull can include headaches irritability and even constipation. After 10 minutes Once you consume an energy drink it takes around 10 minutes for the caffeine to enter your Health Digest, on the other hand, believes that in certain aspects Celsius is the healthier option. For instance, if customers are searching for a zero-sugar energy drink, then Celsius would be a better option than Redbull or Monster. The publication also acknowledges that Celsius contains notable ingredients such as essential vitamins and Therefore, drinking more than one 8.4-ounce (260-ml) serving of Red Bull could increase the risk of caffeine overdose in this age group. Symptoms of caffeine overdose and toxicity can include nausea, vomiting, hallucinations, anxiety, rapid heart rate, dizziness, trouble sleeping, and seizures. It was found that compared with the ingestion of water, ingestion of a 355 mL can of Red Bull imposes a cumulative cardiovascular load, increasing systolic BP by about 10 mmHg, diastolic BP by about 7 mmHg, and heart rate by 20 beats/min, and decreasing cerebral blood flow velocity by -7 cm/s [ 11] (Figure 1 ). Figure 1. Here's the Personalise step-by-step guide to what energy drinks do, according to research. 1. During the first ten minutes of drinking an energy drink, the caffeine starts to be absorbed into your Red Bull: Red Bull is an energy drink that is regulated by the FDA, which means what’s on the label is actually in the beverage you’re drinking. One 8.4 fluid ounce can of the original 2UVPJd0.