Guarana

• Rich in antioxidants - Guarana contains theobromine, caffeine, tannins, catechins, saponins and other compounds with antioxidant properties similar to those found in green tea. Antioxidants are important because they neutralise free radicals in the body, which are potentially harmful molecules. These molecules can interact with parts of your cells and cause damage related to ageing, heart disease, cancer and other diseases.
• May reduce fatigue and improve concentration - It is an excellent source of caffeine, which helps you maintain your concentration and mental energy. Caffeine works by blocking the effects of adenosine. Adenosine is a compound that helps the brain relax. Caffeine binds to adenosine receptors, preventing them from activating and thus keeping the brain focused.
• May promote weight loss – Being a rich source of caffeine, it can boost your metabolism by 3-11% in 12 hours. A faster metabolism means that your body burns more calories at rest.
• May boost heart health – Guarana may reduce the risk of heart disease in two ways. Firstly, the antioxidants in guarana appear to help blood flow and may prevent blood clots from forming. Second, studies have shown that guarana can lower the oxidation of ‘bad’ LDL cholesterol. Oxidised LDL cholesterol can contribute to plaque formation in the arteries. In fact, adults who consume guarana may have up to 27% less oxidised LDL than adults of similar age who do not eat this fruit.
• May relieve pain - Caffeine plays a role in pain management because it binds to and blocks adenosine receptors. When caffeine binds to these receptors, it can reduce pain sensations. This is one of the reasons why caffeine is commonly found in many over-the-counter pain relief medications. Studies have shown that it can significantly improve their effects.

Research shows that guarana has low toxicity in small to moderate doses.

In high doses, guarana can cause side effects similar to those of excessive caffeine intake, such as:

• Sleep disturbances
• Nervousness
• Agitation
• Increased blood pressure
• Increased heart rate
• Irritation of the gastric mucosa
• May worsen diarrhoea and irritable bowel symptoms

It is worth noting that caffeine can be addictive and may lead to dependence in high doses.

Although guarana does not have a recommended dose, most human studies have found that doses of up to 50-75 mg may provide the health benefits associated with guarana.

It is available in dietary supplements, capsules, powder and combinations (Guarana Mate).

Due to its high caffeine content, Guarana is not recommended for pregnant women (caffeine can cross the placenta), breastfeeding women and children. Too much caffeine can cause growth abnormalities in your child or increase the risk of miscarriage. It is recommended that people suffering from cardiovascular disorders, insomnia, high blood pressure or hyperthyroidism seek the advice of a specialist doctor before taking Guarana-based supplements.