Ashwagandha tea offers a calming, accessible way to get the stress-relieving and sleep-supporting benefits that have made this herb one of the most studied adaptogens in recent years. Brewed from the root (and sometimes leaves) of the plant, the tea delivers many of the same active compounds found in supplement form, though typically at lower and more variable concentrations. Here’s what the evidence says those compounds can do.
Stress and Anxiety Relief
The most well-supported benefit of ashwagandha is its ability to lower the body’s stress response. The root contains compounds called withanolides that help regulate cortisol, your primary stress hormone. When cortisol stays elevated for too long, it drives anxiety, disrupts sleep, and breaks down muscle tissue. Ashwagandha appears to bring those levels down.
Clinical trials consistently show reductions in both perceived anxiety and measurable stress markers. In one trial of 80 healthy adults who took ashwagandha root extract for 8 weeks, participants reported meaningful drops in anxiety symptoms compared to those on a placebo. The effect seems to build over several weeks of consistent use rather than working like a single-dose sedative, which makes a daily tea habit a reasonable delivery method.
Better Sleep Quality
If you’re drawn to ashwagandha tea as part of a nighttime routine, the research backs that instinct. A 6-week study of 150 adults with self-reported sleep problems found that ashwagandha improved multiple dimensions of sleep: total sleep time increased, people fell asleep faster, spent more of their time in bed actually sleeping, and woke up less during the night. These weren’t self-reported guesses. Participants wore wrist monitors that tracked their movement throughout the night.
A separate 8-week trial found similar results specifically in people with insomnia. Those taking ashwagandha fell asleep more quickly, rated their sleep quality higher, and felt more mentally alert when they woke up. The combination of lower anxiety and better sleep creates a positive feedback loop, since poor sleep raises stress hormones, and high stress hormones make it harder to sleep. Ashwagandha seems to interrupt that cycle from both directions.
Physical Performance and Recovery
Ashwagandha has gained popularity in fitness circles, and there’s substance behind the trend. An 8-week trial had participants take 300 mg of ashwagandha root extract twice daily while following a resistance training program. The ashwagandha group improved their bench press strength to 46 kg on average, compared to 26.4 kg in the placebo group, nearly double the gain. They also showed greater increases in arm muscle size.
For endurance, a meta-analysis of multiple studies found that ashwagandha increased VO2 max (the body’s maximum oxygen uptake during exercise) by about 4 ml/min/kg in athletes. That’s a meaningful jump in aerobic capacity. The mechanism likely ties back to cortisol: chronically high cortisol breaks down muscle and slows recovery, so bringing it under control creates better conditions for your body to build strength and adapt to training. A cup of ashwagandha tea won’t replace a pre-workout supplement, but regular consumption over weeks may support your training.
Cognitive Function and Memory
Ashwagandha shows promising effects on mental sharpness. A placebo-controlled study found that participants taking ashwagandha root extract processed information faster, reacted more accurately in timed tasks, and recalled words better after a delay. Specific improvements included better working memory (the ability to hold and manipulate information in your head), faster reaction times, and improved accuracy on tasks requiring focus and impulse control.
These cognitive benefits likely stem from a combination of factors. Lower stress hormones protect brain cells from damage, better sleep allows the brain to consolidate memories overnight, and ashwagandha’s antioxidant properties may reduce inflammation in brain tissue. For someone drinking ashwagandha tea regularly, these effects would accumulate gradually rather than producing a noticeable boost on any single day.
Tea vs. Supplements
Most clinical trials use standardized extracts in capsule form, where the dose of active compounds is precisely controlled. Ashwagandha tea delivers the same types of compounds but at concentrations that depend on how much root you use, how long you steep it, and the quality of the source material. A typical cup of root tea likely contains less withanolide content than the 300 to 600 mg of concentrated extract used in most studies.
That said, tea has its own advantages. The ritual of preparing and drinking it can itself lower stress. You absorb the compounds gradually, which may be gentler on your stomach. And many people find it easier to maintain a tea habit than a supplement routine. If you’re looking for mild, sustained effects on stress and sleep, tea is a reasonable choice. If you’re chasing specific performance or cognitive outcomes, a standardized extract gives you more control over dosing.
Safety Considerations
Ashwagandha is well tolerated by most healthy adults at typical doses. However, there are a few important exceptions. The National Center for Complementary and Integrative Health notes that ashwagandha is not recommended for people with autoimmune disorders or thyroid conditions, since it can stimulate immune activity and alter thyroid hormone levels. It should also be avoided before surgery.
Liver injury has been reported in a small number of cases linked to ashwagandha supplements. These instances are rare but worth knowing about, especially if you have existing liver concerns or take medications processed by the liver. Pregnant and breastfeeding women should avoid ashwagandha entirely, as safety data for these groups is insufficient. For most people drinking one to two cups of ashwagandha tea daily, the risk profile is low, but the exceptions are real and worth taking seriously.