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Why Use Guaraná. Why Do Dieters Use It? What Do the Advocates Say? These are individual opinions and testimonials that may or may not be supported by controlled clinical studies or published scientific articles. How Much Is Usually Taken by Dieters? Side Effects As with any caffeinated product, guaraná may cause insomnia , trembling, anxiety , palpitations, and urinary frequency.

Interactions with Medicines Certain medicines interact with this supplement. What Are Drug Interactions. All the above studies that you went through so far involved guarana independently or in combination with other ingredients.

Given that Guarana has high caffeine content, it can be safe to assume that this herb will show a similar effect. One of the early studies to examine the effect of normal caffeine on obesity showed that consumption of coffee can raise thermogenesis in the body and improve energy balance.

While increased thermogenesis promotes fat-burning, boosted energy increases athletic performance, enabling you to train harder. Both of them open pathways for losing weight faster.

A more recent meta-analysis also demonstrates that caffeine consumption leads to a reduction in body composition and weight as caffeine increases fat oxidation in the body.

Additionally, it also effectively curbs appetite , which prevents the accumulation of new fat. While Guarana is a natural ingredient supplement, the fact that it has a large amount of stimulant, particularly caffeine in high quality cannot be ignored.

It may cause headaches, nausea, or dry mouth condition. High doses of guarana can lead to caffeine toxicity, causing tremors, insomnia, anxiety, hypertension, or dehydration in sensitive users. For reference, the daily suggested dose of Guarana is to mg and should not exceed this.

Remember that Guarana may interact with other medicines therefore, it is advisable to take the advice of a healthcare practitioner if you are under any medication or treatment.

Guarana has surely shown promising results in weight loss, as evidenced by the available data. It has the ability to trigger fat metabolism, leading to energy balance and reduced body fat. But if you see, study after study has established a positive effect of caffeine in weight reduction parameters, which means similar results can be determined in the case of guarana, which is high in caffeine.

These results, however, are from short-term usage. Given that the herb is loaded with stimulants, more wide-scale interventions are required, particularly involving humans, to understand its safety in long-term use.

Until then, we recommend you be watchful if you are using guarana in any supplement or consult a healthcare professional before you do. Peter is an ardent advocate for wellness and physical fitness, maintaining an unwavering interest in fitness, supplements, and overall well-being for more than a decade.

He is the founder of Advantageja, a prominent health and wellness brand. Peter has garnered multiple fitness certifications, including personal training and sports nutrition credentials. For the past few years, he has diligently served as a personal trainer, wholeheartedly committed to assisting clients in attaining their fitness aspirations and embracing healthier lifestyles.

With an unwavering dedication to sharing his expertise and passion, he enthusiastically strives to empower others by imparting knowledge and promoting well-being thorough his writings. A study found that guarana was effective in modifying the metabolism of Escherichia coli E. coli to reduce the production of bacterial folate in the digestive tract.

A study investigated eyesight and guarana consumption in older adults. The study found that those who reported good vision also consumed guarana more regularly than those with poor or regular eyesight. Guarana may be protective against aging-related eye disease.

Guarana is generally considered safe if people monitor their caffeine intake through all sources, including guarana.

People with liver disease or cirrhosis should not take high doses of guarana long term. Because caffeine can cross the placenta , pregnant people should limit or avoid using guarana. Guarana may be safe to take daily if a person monitors their caffeine intake from all sources to avoid caffeine toxicity.

The Food and Drug Administration FDA recommends mg as a safe daily caffeine limit for adults without medical conditions. Abruptly discontinuing caffeine use may result in withdrawal symptoms. If a person takes guarana daily and wants to stop, they should cut back gradually.

People taking stimulant medication may want to ask their prescribing physician whether guarana is safe for them to use. Guarana is an extract from the plant Paullinia cupana.

It has several bioactive chemicals, including the stimulants caffeine, theophylline, and theobromine. In addition to how it can help a person feel more awake and alert, guarana benefits may include anti-inflammatory and pain relief effects.

Guarana side effects are similar to those resulting from caffeine. It may be safe for people without medical conditions to take guarana daily as long as they monitor their overall caffeine intake.

Some studies have shown that caffeine can benefit overall health. However, others suggest that it may be harmful in excess. Read more to find out…. Some people may have caffeine sensitivity, meaning that they are more likely to experience side effects when consuming the substance. Learn more here.

Matcha contains caffeine. In fact, it contains more caffeine than most other types of tea, as it consists of whole powdered tea leaves. Evidence suggests that sauerkraut may provide various health benefits, including supporting gut health. While guarana does contain more caffeine than coffee, both have potential benefits when consumed in moderation.

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Research support was provided by: Science Toxicology and Technology Consulting, San Francisco, CA; Metabolife Inc. The authors acknowledge the following individuals for their assistance in carrying out this investigation: Stanley Heshka PhD, for the randomization procedure; Peter Hommel PhD for statistical advice; and the medical staff for physical evaluations—Abderrahmane Saddouk MD, Adbelhakim Dinar MD, Grace Marin and Renee Gabrielle.

St Luke's-Roosevelt Hospital Center and Department of Medicine, Obesity Research Center, Columbia University College of Physicians and Surgeons, New York, USA. You can also search for this author in PubMed Google Scholar. Correspondence to CN Boozer.

However, mounting evidence has shown that some herbal supplements used for weight loss are associated with adverse effects.

Guarana seed powder is a popular nonprescription dietary herb supplement marketed for weight loss, but no study has demonstrated its efficacy or safety when administered alone.

Wistar rats were fed four different diets low-fat diet and Western diet with or without guarana supplementation for 18 weeks. Metabolic parameters, gut microbiota changes, and toxicity were then characterized.

Guarana seed powder supplementation prevented weight gain, insulin resistance, and adipokine dysregulation induced by Western diet compared with the control diet.

Guarana induced brown adipose tissue expansion, mitochondrial biogenesis, uncoupling protein-1 overexpression, AMPK activation, and minor changes in gut microbiota.

Molecular docking suggested a direct activation of AMPK by four guarana compounds tested here.