Ashwagandha has had a remarkable run. A few years ago it was a niche Ayurvedic herb; now it’s in gummies at the checkout line, mixed into protein powders, and recommended by every fitness influencer with a discount code. Alongside the popularity has come a growing wave of posts with a consistent theme: it made me feel nothing. Flat. Unmotivated. Emotionally muted. The word “anhedonia” gets thrown around a lot.
So is emotional blunting a real ashwagandha side effect, or an internet artifact? The honest answer sits in between, and the real story is more interesting than either camp admits.
What the trials actually measured
Most of the controlled research on ashwagandha uses standardized root extracts at 250-600 mg per day, taken for six to twelve weeks. The outcomes are typically self-reported stress and anxiety scales, sometimes morning cortisol, sleep quality, and in a few trials, strength or testosterone in men. We walked through the cortisol evidence in a separate post.
Across these trials, the reported side effects are mild and uncommon: drowsiness, mild stomach upset, and occasionally headache. Nothing that looks like emotional blunting shows up in the adverse event tables.
Here’s the problem with treating that as reassurance. Emotional blunting is not something the trials were designed to detect. A stress questionnaire asks whether you feel overwhelmed or nervous; it doesn’t ask whether you feel less joy, less motivation, or less connected to things you care about. A person who went from anxious to numb would score as “improved” on an anxiety scale. The trials were also short, modest in size, and frequently funded by extract manufacturers. Absence of evidence here is genuinely just absence of evidence.
So the trials don’t support the blunting claim. They also don’t refute it. That distinction matters.
Why the reports could be real
There’s a plausible mechanism, and it isn’t exotic.
Ashwagandha’s active compounds, the withanolides, appear to have calming activity that overlaps with the GABA system, the brain’s main inhibitory signaling. That’s consistent with the drowsiness seen in trials and with its traditional use as a sedative. Think of it as turning down arousal.
For someone with genuinely elevated stress and anxiety, turning down arousal feels like relief. For someone whose baseline arousal was normal, or who relied on a certain amount of nervous energy to feel driven, turning it down may feel like flatness. “I don’t care as much” and “I’m less anxious” can be the same physiological change described from two different starting points.
A few other factors probably contribute:
- Dose and product variability. Extracts vary widely in withanolide content, from around 1.5% to 10% or more depending on the standardization. A gummy and a high-potency capsule are not the same product, and many people online don’t know which they took.
- Timing. A sedating herb taken in the morning can produce daytime dullness that reads as emotional rather than physical.
- Stacking. Many people reporting blunting were also taking other things, including L-theanine, magnesium, or prescription medications, making attribution guesswork.
- Nocebo and selection. Once “ashwagandha anhedonia” became a popular search, people who felt flat for any reason found a ready explanation, and those with no issues had no reason to post. This doesn’t mean the reports are false. It means they can’t tell us how common the effect is.
Our best reading: a subset of people probably do experience something like emotional flattening on ashwagandha, most likely because its calming effect overshoots their needs. It appears reversible on stopping. How large that subset is, nobody knows.
The safety issues that deserve more attention
While the internet argues about blunting, two better-documented concerns get comparatively little airtime.
Liver injury. A number of published case reports and small case series describe liver injury in people taking ashwagandha, typically appearing within a few weeks to months of starting and resolving after stopping. These cases are rare relative to the number of people using the herb, and they appear to be idiosyncratic rather than dose-dependent. But they are real enough that at least one European food safety authority has advised against ashwagandha use, and it’s been restricted in some markets. Stop immediately and seek medical care if you develop dark urine, yellowing of the skin or eyes, pale stools, persistent nausea, or pain in the upper right abdomen. Anyone with existing liver disease or who drinks heavily should avoid it.
Thyroid hormone changes. Ashwagandha can raise thyroid hormone levels. In a few trials of people with mildly underactive thyroids, that looked like a benefit. For someone with an overactive thyroid, or someone on thyroid medication whose dose was carefully calibrated, it’s a problem. If you have any thyroid condition, this is a talk-to-your-doctor-first supplement.
Both of these are more important than the blunting debate, and both are easier to miss because they don’t produce a feeling you’d post about.
Who should skip it
Beyond the liver and thyroid cautions:
- Pregnancy. Ashwagandha has traditionally been considered to have abortifacient potential and is widely advised against. Avoid it entirely. Nursing is not well studied; avoid.
- Autoimmune conditions. The herb may stimulate immune activity, which is theoretically unhelpful in conditions where the immune system is already overactive. Evidence is limited; caution is standard.
- Sedatives, sleep medications, and alcohol. Additive drowsiness.
- Immunosuppressants. Theoretical interaction via immune stimulation.
- Nightshade sensitivity. Ashwagandha is in the nightshade family.
- Before surgery. Stop at least two weeks before, because of sedative effects and interactions with anesthesia.
What to do if you feel flat
If you started ashwagandha and noticed your emotional range narrowing:
- Stop it. There’s no evidence of withdrawal or a need to taper. Most reports describe normal feeling returning within days to a couple of weeks.
- Don’t assume it was the ashwagandha. Life, sleep, other supplements, and seasonal mood changes all produce flatness. Stopping is the cleanest way to find out.
- If you want to retry, use a lower dose, take it in the evening rather than the morning, and use a single-ingredient product with a stated withanolide percentage so you know what you’re taking. Doses of 250-300 mg of a 5% withanolide extract are at the lower end of the studied range.
- If flatness persists after stopping, that’s worth a conversation with a healthcare provider, because it probably isn’t the supplement.
Also consider whether you needed ashwagandha at all. Many people start it for ordinary stress that responds just as well to sleep, exercise, and reducing caffeine. Our adaptogens guide covers what this category of herbs can and can’t do, and the ashwagandha supplement page has dosing details and forms.
Bottom line
Emotional blunting from ashwagandha is unproven but plausible. The trials never looked for it, the herb has a calming mechanism that could overshoot in some people, and the online reports are consistent enough to take seriously even though they can’t tell us how common it is. If you feel flat, stop; the effect appears to reverse. Meanwhile, the risks with actual documentation, rare liver injury and thyroid hormone shifts, are the ones to watch for, and pregnancy and thyroid disease are firm reasons to skip it.
This article is educational and not medical advice. Consult a healthcare provider before starting any supplement, especially if you are pregnant, nursing, taking medication, or managing a health condition.