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Although we're not aware of a clinical study of their combined effects, rhodiola can cause dizziness and ashwagandha can be sedating -- and both may lower blood pressure, so it may be best not to take them together.  

In general, it is best to first use herbal supplements separately to assess the benefits and potential side effects you experience with each.

For more about these herbs, plus reviews and comparisons of the specific products we have tested, see our Review of Rhodiola Supplements and Review of Ashwagandha Supplements.

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December 8, 2019

For some of you it sounds like the song long ago that Kenny Rogers sang with the band The First Edition.

"I just dropped in to see what condition my condition was in."

September 19, 2019

What about a "greens" or "reds" product that contains both ashwagandha (600 mg root extract) and rhodiola (100 mg rosea extract)? A product called Patriot Power Reds contains both of these. Would that be safe to take?
October 24, 2019

Hi Diane - As noted above, it's generally best to take herbs separately so that you can determine benefits and side effects experienced with each.

Jan C16474
February 19, 2018

I have "adrenal fatigue" (often not a real condition, but in my case, thyroidectomy and hysterectomy have put burden on my adrenals)

My solution is to use rhodiola at times when I need more energy, bacopa for cognitive function, and ashwaganda for relaxation.

I do not use them concurrently, but will select at the beginning of the month, what I will need for the month.

February 18, 2018

I take both in an adrenal blend. They really help. More than anything else has

February 18, 2018

We typically use both in integrative medicine. I use ashwagandha at bedtime because it is sedating, and rhodiola in small doses in the morning because it can be activating. I tend to recommend always starting slow with natural supplements, and adding on gradually. Some people get a positive response right away and others will continue on the supplements for a couple of months, along with other stress reduction (meditation, tapping, Heartmath, Headspace app on your phone, etc.), before they feel better overall.

March 13, 2020

all of the supportive Therapies you mentioned in your comment are those that I am either trained in and others still in the process of “perfecting”. I would love to connect and discuss if possible!

February 18, 2018

I've been taking both Rhodiola and Ashwaganda at relatively high dosages for some time, as well as a plethora of other herbs and what not and for the most part I have no idea if anything is working, let alone having side effects. I am not very susceptible to placebo effects. I just trust the shaky science behind these substances, using Consumerlab suggested brands wherever possible.
February 22, 2018

Hi Lawrence - Thank you for sharing your experience with this. As noted in the answer above, you may want to try each separately, so that you have a better idea of what is working, and what isn't. Also, you can find information about dosages typically used for each in the ConsumerTips sections of the Ashwagandha Supplements Review ( and the Rhodiola Supplements Review (

August 22, 2018

I appreciate the unguarded honesty of your comment. I am much like you, in that I find it difficult to measure the "condition of my condition." I've found that keeping written track of when I've started taking (or stop taking) a nutrient help me to remember what (if any) changes I'm feeling. Best of growth and health.

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