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Published on: 9/13/2026
Most mild ashwagandha side effects, such as drowsiness, upset stomach, nausea, or loose stools, tend to fade within a few days to about two weeks after the last dose as the herb clears your system. Effects tied to hormones or thyroid function, along with rare liver-related reactions, can take several weeks or longer to normalize and may need lab testing to confirm. Timing varies based on your dose, how long you used it, the extract type, other medications, and your overall health, so there are several important factors to consider below. Warning signs like yellowing skin or eyes, dark urine, ongoing abdominal pain, severe fatigue, or a racing heartbeat call for prompt medical attention rather than watchful waiting.
If your symptoms are lingering longer than expected, a free, instant, online symptom check can help you sort out whether what you feel is likely a fading supplement reaction or something else that deserves a closer look, and it points you toward the right next step in minutes without an appointment.
Last reviewed for medical accuracy: 09/12/2026
Ashwagandha is an herb often used to help manage stress, improve sleep, and support overall well-being. Like any supplement, it can cause side effects in some people. If you’ve experienced mild discomfort—such as an upset stomach, headache, or drowsiness—you may be wondering how long these ashwagandha side effects will stick around once you stop taking it. Below, we explain what to expect based on available research and clinical experience.
Ashwagandha side effects typically arise from your body adjusting to the herb’s active compounds (withanolides) and their influence on hormones, neurotransmitters, or digestion. Once you discontinue ashwagandha:
Most side effects fade as the herb exits your system and your body rebalances itself. The timeline varies by side effect type, dosage, and individual factors like metabolism, age, and overall health.
Most people experience only mild side effects, which generally resolve quickly after stopping ashwagandha. Here’s a rough timeline for the most frequently reported reactions:
Digestive Upset (nausea, diarrhea, stomach cramps)
• Onset: Within hours to days of use
• Resolution: 1–3 days after stopping
Drowsiness or Mild Sedation
• Onset: Often within an hour of taking a dose
• Resolution: 24–48 hours after the last dose
Headache or Mild Migraine
• Onset: Within hours to days of starting
• Resolution: 2–5 days after discontinuation
Dry Mouth or Thirst
• Onset: Within hours to days
• Resolution: 1–2 days after stopping
In rare cases, higher doses or prolonged use may trigger more noticeable changes that take longer to reverse:
Hormonal Shifts (thyroid, cortisol changes)
• Onset: Weeks to months of regular use
• Resolution: Up to 1–2 weeks for hormones to rebalance
Blood Sugar or Blood Pressure Changes
• Onset: Days to weeks of use
• Resolution: 3–7 days, depending on medication interactions
Allergic Reactions (rash, itching, swelling)
• Onset: Within hours if severe; days if mild
• Resolution: 3–14 days; sometimes requiring antihistamines
Liver Enzyme Elevations (very rare)
• Onset: Typically weeks into treatment
• Resolution: 1–4 weeks after stopping, with monitoring
If any side effect persists beyond these general timelines, or if you develop new or worsening symptoms, it’s important to monitor carefully and consider medical evaluation.
Several variables affect how quickly your body clears ashwagandha and reverses any unwanted effects:
While you wait for side effects to subside, you can support your body’s recovery:
Most ashwagandha side effects are mild and self-limited. However, certain symptoms warrant prompt attention:
If you’re unsure whether your symptoms are serious, consider a free, online symptom check, using the doctor approved Ubie Symptom Checker. This tool can help you decide whether you need urgent care or can continue to monitor your recovery at home.
Most people discontinue ashwagandha with side effects that clear up within a few days to two weeks. Mild symptoms like digestive upset, drowsiness, or headaches usually resolve within 1–5 days. Rare or hormonal effects can take up to 1–2 weeks to rebound fully. Paying attention to your body, staying hydrated, and resting well will help you feel back to normal sooner.
Please remember: if you experience any life-threatening or serious symptoms, speak to a doctor right away. And for mild to moderate concerns, you might start with a free, online symptom check, using the doctor approved Ubie Symptom Checker to guide your next steps. Always consult a healthcare professional before making changes to your medications or supplements.
(References)
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* Mandlik Ingawale DS, Namdeo AG. Pharmacological evaluation of Ashwagandha highlighting its healthcare claims, safety, and toxicity aspects. J Diet Suppl. 2021;18(2):183-226. doi: 10.1080/19390211.2020.1741484. Epub 2020 Apr 3. PMID: 32242751.
* Cheah KL, Norhayati MN, Husniati Yaacob L, Abdul Rahman R. Effect of Ashwagandha (Withania somnifera) extract on sleep: A systematic review and meta-analysis. PLoS One. 2021;16(9):e0257843. doi: 10.1371/journal.pone.0257843. Epub 2021 Sep 24. PMID: 34559859; PMCID: PMC8462692.
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* Hersant H, He S, Maliha P, Grossberg G. Over the Counter Supplements for Memory: A Review of Available Evidence. CNS Drugs. 2023 Sep;37(9):797-817. doi: 10.1007/s40263-023-01031-6. Epub 2023 Aug 21. PMID: 37603263.
* Philips CA, Valsan A, Theruvath AH, Ravindran R, Oommen TT, Rajesh S, Bishnu S, Augustine P, Liver Research Club India. Ashwagandha-induced liver injury-A case series from India and literature review. Hepatol Commun. 2023 Oct 1;7(10). doi: 10.1097/HC9.0000000000000270. Epub 2023 Sep 27. PMID: 37756041; PMCID: PMC10531359.
* Wiciński M, Fajkiel-Madajczyk A, Kurant Z, Kurant D, Gryczka K, Falkowski M, Wiśniewska M, Słupski M, Ohla J, Zabrzyński J. Can Ashwagandha Benefit the Endocrine System?-A Review. Int J Mol Sci. 2023 Nov 20;24(22). doi: 10.3390/ijms242216513. Epub 2023 Nov 20. PMID: 38003702; PMCID: PMC10671406.
* Fatima K, Malik J, Muskan F, Raza G, Waseem A, Shahid H, Jaffery SF, Khan U, Zaheer MK, Shaikh Y, Rashid AM. Safety and efficacy of Withania somnifera for anxiety and insomnia: Systematic review and meta-analysis. Hum Psychopharmacol. 2024 Nov;39(6):e2911. doi: 10.1002/hup.2911. Epub 2024 Jul 31. PMID: 39083548.
* Arumugam V, Vijayakumar V, Balakrishnan A, B Bhandari R, Boopalan D, Ponnurangam R, Sankaralingam Thirupathy V, Kuppusamy M. Effects of Ashwagandha (Withania Somnifera) on stress and anxiety: A systematic review and meta-analysis. Explore (NY). 2024 Nov-Dec;20(6):103062. doi: 10.1016/j.explore.2024.103062. Epub 2024 Sep 21. PMID: 39348746.
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