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It can result in nausea, abdominal cramps, vomiting, and diarrhea when taken in high doses

However, keep in mind that its not a miracle cure for excess weight

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In addition, the study conducted by Chen et al

While not all nootropics are safe or effective, there are a number that are, especially: adaptogen herbs medicinal and adaptogenic mushrooms bacopa ginseng DHA/fish oil ginkgo biloba Other types that can help improve memory, thinking speed and attention span are green coffee extract or matcha green tea, along with caffeine and L-theanine