Eurycoma longifolia jack, also known as tongkat ali, is an herb commonly found in Indonesia and Malaysia. It is used in male virility and bodybuilding supplements to naturally increase testosterone levels, muscle strength and size, and male sex drive. It may also increase sexual desire and performance, but no human studies have been conducted to verify these findings. The herb is also used in other herbal treatments to prevent malaria, ulcers, and tumors, and as an antipyretic and antibacterial. Possible side effects include insomnia, restlessness, and anxiety, and the herb is not regulated by the FDA.
Eurycoma longifolia jack is an herb, derived from a flowering plant, used in male virility and bodybuilding supplements. Also known as tongkat ali, it is commonly found in Indonesia and Malaysia. In supplement form, this substance is believed to naturally increase testosterone levels, thereby increasing metabolism, muscle strength and size, and male sex drive.
Bodybuilding supplements usually contain eurycoma longifolia jack to boost testosterone naturally. Testosterone is responsible for increasing the number of calories the body uses at rest and increasing muscle protein synthesis related to increased muscle mass. As of 2010, there was a known study that claimed that eurycoma longifolia jack increases muscle size and strength.
Male enhancement supplements may also include this ingredient. There are several scientific animal studies that support the claim that eurycoma longifolia jack increases sexual desire and performance. Sperm count may also increase when using the herbal supplement. However, no human studies have been conducted to verify these findings.
In other herbal treatments, eurycoma longifolia jack is commonly used to prevent malaria, ulcers, and tumors. It is also used in Southeast Asia as an antipyretic and antibacterial. Antipyretic herbs and medicines are typically used to reduce fever, while antibacterials prevent and protect the body from bacterial infections.
Eurycoma longifolia jack is available in liquid, pill, and powder forms. Typical doses are around 300 milligrams (mg), but concentrations can vary between products, so those wishing to take it should consult a professional to determine the proper dosage. Tongkat ali extract should be recycled, because the herb is known to accumulate in the human body over time. Some retailers suggest taking the supplement for two weeks, followed by a week off. After two to three months, it is also suggested that users stop taking the supplement for a month or more.
Possible side effects associated with eurycoma longifolia jack include insomnia, restlessness, and anxiety. Pregnant and nursing women may not wish to take this substance. Men with testosterone-dependent cancer may also avoid it due to its hormone-boosting characteristics. Diabetics are also sometimes warned of possible drops in blood sugar levels because of it.
There are several alternative names for tongkat ali, including pasak bumi and cay bha binh. Supplements that include eurycoma longifolia jack are not regulated by the US Food and Drug Administration (FDA) and therefore their effectiveness and strength can vary widely. Some herbal companies have even been accused of printing ingredients and amounts on labels, but not actually listing them in the product.
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