Guarana is a caffeine-based stimulant, and as such, people have varying levels of tolerance. Meta studies show that up to 300 miligrams of caffeine per day is generally safe and beneficial for ...

Guarana and coffee contain different plant chemicals but share caffeine in common. Caffeine is a stimulant, and having too much of it can cause side effects such as anxiety and palpitations.

Guarana, then, in terms of benefit, is like coffee 2.0. Guarana does have some other potential health benefits, though, according to naturopaths, but these are still up for debate.

Guarana’s anti-inflammatory action may provide pain relief, according to a 2018 review. Study participants receiving radiation for head and neck cancer experienced pain relief from guarana.

The seeds of the guarana fruit are about the size of coffee beans, but they contain more than twice as much caffeine, along with other compounds.

OBJECTIVE: To examine in overweight humans the short-term safety and efficacy for weight loss of an herbal supplement containing Ma Huang, Guarana and other ingredients. DESIGN: An 8 week ...

Since 2008, nearly 500 products with guarana, including different sizes and flavors of the same product, have been introduced to U.S. stores, according to London market-research firm Datamonitor PLC.

Detlef Urban 06/13/2019 For the Guarana growers of the Amazon, the caffeine-rich berries aren't just a fortifying brew but part of ancient tradition that respects their rainforest home.

Guaraná is gaining status as a stimulant and superfood – but has a centuries-old heritage and mythical status for the Sateré-Mawé indigenous people.

Dose: Usually 200 to 400 milligrams taken over the course of a day. Guarana is available in capsules, in liquid extracts and as a tea. Some food items, such as mints and drinks, also contain the herb.