Does Ashwagandha Cause Emotional Blunting? What We Know and What We Don’t
By Idunn Lab · Researched from published studies (see references) · Published October 15, 2026 · Updated October 15, 2026 · 7 min read
What do people mean by emotional blunting?
Emotional blunting means a reduced ability to feel the full range of emotions: less joy, less excitement, less motivation. When pleasure and interest are mostly absent, clinicians call it anhedonia, which is a core symptom of depression. Emotional blunting is best documented as a side effect of some antidepressants.
It is different from feeling calmer. Reduced tension and better sleep are what most people hope for from ashwagandha. Blunting is when you also feel less interested or less able to enjoy things.
What do clinical trials show?
| Question | What the evidence shows | Limits |
|---|---|---|
| Does it reduce stress and anxiety? | A 60-day trial of 64 stressed adults reported perceived stress fell 44% vs 5.5% on placebo (Chandrasekhar 2012). A 10-week trial in adults with insomnia reported better sleep and lower anxiety scores (Langade 2019). | Small trials, different extracts and doses. |
| Are side effects common? | Reported effects in trials have generally been mild, such as drowsiness or stomach upset. Rare cases of liver injury have been reported (Björnsson 2020). | Trials were short, mostly three months or less. |
| Does it cause emotional blunting? | Not established. Trials did not systematically measure it. | Absence of evidence is not evidence of absence. |
Importantly, published trials enrolled dozens to a few hundred people, not thousands, so uncommon reactions could easily be missed.
What could explain feeling flat?
We do not know. These are possibilities, not findings:
- Drowsiness. Feeling sleepy can be mistaken for feeling numb.
- Less stress than usual. Some people who rely on stress for drive may feel less pushed when stress eases. This is a hypothesis.
- Another cause. Depression, thyroid problems, poor sleep, alcohol, grief, and other medications or supplements can all flatten mood.
- An interaction. Ashwagandha can have sedative effects, and interactions with psychiatric medication have not been well studied.
Lab studies suggest that compounds in ashwagandha may interact with GABA and serotonin pathways, and some websites go further and claim that high doses over-stimulate serotonin receptors or push cortisol too low. These ideas come from preclinical research and have not been shown to explain any effect in humans.
What to do if you feel flat
- Do not raise the dose. More has not been shown to work better, and the label should guide how much you take.
- Stop the supplement if you notice a loss of interest, pleasure or emotional range, and note the date.
- Talk to a healthcare professional, especially if you take antidepressants, anti-anxiety medication, sedatives or thyroid medication, or if the feeling does not clear.
- Do not rely on cycling or dose-halving rules. Popular schedules such as “8 weeks on, 1 week off” or a specific number of days to recover have not been tested for this issue.
Seek professional help promptly if you have persistent low mood, loss of interest in things you used to enjoy, hopelessness, or changes in sleep or appetite that affect daily life. If you ever have thoughts of harming yourself, contact your local emergency services or a crisis line right away. In the US, you can call or text 988.
For more on timing and what trials measured, see our article on how long ashwagandha takes to work. If you are comparing products, our guide to KSM-66 and Sensoril explains the two extracts we use.
Safety: who should be careful?
Do not take ashwagandha if you are pregnant or breastfeeding.
Talk to your doctor first if you have thyroid disease (ashwagandha can raise thyroid hormone levels), an autoimmune condition, liver disease, are scheduled for surgery, or take sedatives, antidepressants or other psychiatric medication, thyroid, diabetes or blood-pressure medication, or immunosuppressants.
Rare cases of liver injury have been reported, so stop use and seek advice if you notice jaundice, dark urine, severe itching or persistent abdominal pain. Most trials lasted three months or less, so long-term safety data are limited. Review ongoing use with a healthcare professional. For research by group, see our guides for women and men.
Our IDUNIQ Ashwagandha formulas
IDUNIQ for Men combines KSM-66® Ashwagandha with zinc, maca and ginseng. IDUNIQ for Women combines Sensoril® Ashwagandha with saffron, magnesium and collagen peptides. Each is a daily capsule, third-party lab tested and made in a cGMP-compliant facility, with every ingredient and dose listed on the label and no proprietary blends. Take as directed on the label.
We make no claims about the effect of any of these ingredients on mood or emotional range, and we do not claim that our combinations have been tested together in clinical trials. See how we choose ingredients on our Science page.
Frequently asked questions
Is emotional blunting a known side effect of ashwagandha?
It is not an established or well-characterized side effect. Clinical trials have mostly reported mild effects such as drowsiness and stomach upset, but they were not designed to measure emotional blunting, so it cannot be ruled out. Some people do report feeling flat or overly calm.
Does ashwagandha lower dopamine?
There is no good human evidence either way. Claims about dopamine or serotonin effects come mainly from lab and animal studies and have not been shown to explain any effect in people.
Is emotional blunting from ashwagandha permanent?
There is no evidence of permanent effects, but data are limited. Reports generally describe improvement after stopping. If feeling flat continues, speak to a healthcare professional, because other causes such as depression need proper evaluation.
How can I tell calm from emotional blunting?
Calm means you still feel interest, enjoyment and a normal emotional range, just with less tension. Blunting means losing pleasure, interest or emotional range. If you notice the second, stop the supplement and talk to a healthcare professional.
References
- Chandrasekhar K, Kapoor J, Anishetty S. A prospective, randomized double-blind, placebo-controlled study of safety and efficacy of a high-concentration full-spectrum extract of ashwagandha root in reducing stress and anxiety in adults. Indian J Psychol Med. 2012;34(3):255-262.
- Langade D, Kanchi S, Salve J, Debnath K, Ambegaokar D. Efficacy and safety of ashwagandha root extract in insomnia and anxiety. Cureus. 2019;11(9):e5797.
- Björnsson HK, Björnsson ES, Avula B, et al. Ashwagandha-induced liver injury. Liver Int. 2020;40(4):825-829.
Sensoril® is a trademark of Natreon, Inc. KSM-66® is a trademark of its respective owner. Both names are used here only to identify ingredients. This article is for information only and is not medical advice. These statements have not been evaluated by the Food and Drug Administration. Dietary supplements are not intended to diagnose, treat, cure or prevent any disease. Consult a qualified healthcare professional before starting any supplement.
1 comment
Useful, thanks for posting