People with low blood sugar should not take it if they don't plan on eating soon after taking it. Side effects are insomnia, restlessness and rapid heart rate.
restlessness, irritability, and insomnia, can cause anxiety and the "jitters",crash and excessive lethargy,Memory and learning,increased heart rate heart rhythm disturbances and heart palpitations.
It is not advisable for pregnant women to take Rhodiola. Increase anxiety and shaky pulse, irritability, restlessness, difficulty in sleeping at night or insomnia and confusion are just a few side effects caused by the medication Rhodiola. Though these side effects can be prevented if one knows the proper use for the said medication.