Doctors Note Logo

Published on: 5/5/2026

Why Your Doctor Might Suggest Ashwagandha for Strength Gains

Ashwagandha may support strength gains by reducing cortisol, boosting testosterone, and improving muscle strength, size, recovery, and endurance.

There are several factors to consider, including the right dosage, extract standardization, safety precautions, and potential side effects or interactions.

See below for complete details before incorporating this supplement into your training regimen.

answer background

Explanation

Why Your Doctor Might Suggest Ashwagandha for Strength Gains

Ashwagandha (Withania somnifera) is an herbal adaptogen long used in Ayurvedic medicine. In recent years, practitioners and researchers have explored its potential role in enhancing physical performance. If you've heard about Ashwagandha and athletic power, you're not alone—doctors may recommend this supplement to support strength, recovery, and overall well-being. Here's what you need to know, based on credible studies and clinical insights.

1. What Makes Ashwagandha an Adaptogen?

Adaptogens are compounds that help the body resist diverse stressors—physical, chemical, or biological. Ashwagandha's adaptogenic properties stem from its bioactive components, notably withanolides. These compounds:

  • Balance the hypothalamic-pituitary-adrenal (HPA) axis
  • Modulate cortisol (the stress hormone) levels
  • Support immune function and cellular resilience

By taming chronic stress responses, ashwagandha may indirectly contribute to better training adaptations.

2. Cortisol Control and Muscle Health

High cortisol can inhibit muscle protein synthesis and accelerate protein breakdown—counterproductive for anyone aiming at strength gains. Studies suggest that ashwagandha:

  • Reduces serum cortisol by up to 27% in chronically stressed adults
  • Limits exercise-induced spikes in cortisol during intense workouts
  • May preserve lean muscle mass under prolonged physical or mental stress

When cortisol is kept in check, anabolic (muscle-building) processes face less resistance, making room for better recovery and gains.

3. Boosting Testosterone and Anabolic Markers

Some clinical trials report modest increases in testosterone and other anabolic hormones with ashwagandha supplementation:

  • A 2015 randomized trial found a 14.7% increase in testosterone among healthy men taking 300 mg twice daily for 8 weeks.
  • Free testosterone levels rose even more dramatically, supporting greater muscle protein synthesis.
  • Improved hormonal profile often translates into enhanced athletic power, strength, and endurance.

While individual responses vary, these shifts can be meaningful for both recreational lifters and competitive athletes.

4. Enhanced Muscle Strength and Size

Several well-designed studies have evaluated ashwagandha's effect on strength and muscle mass:

  • In one double-blind, placebo-controlled trial, subjects taking 600 mg daily of standardized ashwagandha extract experienced:
    • 47% greater increase in bench-press strength
    • 38% greater gain in leg-extension strength
    • Significant boosts in muscle size compared to placebo
  • Participants also reported reduced exercise-induced muscle damage and faster recovery between sets.

These findings support the notion that pairing resistance training with ashwagandha may accelerate strength adaptations compared to training alone.

5. Improved Aerobic Capacity and Endurance

Although much focus is on strength, Ashwagandha and athletic power extends to cardiovascular fitness:

  • Research shows up to a 9% increase in VO₂ max after 8 weeks of supplementation at 600 mg per day.
  • Better oxygen consumption allows athletes to maintain higher intensities for longer.
  • Reduced perceived exertion during submaximal exercise makes challenging workouts feel more manageable.

This broad-spectrum impact on both anaerobic (strength) and aerobic (endurance) performance makes ashwagandha appealing for multisport athletes.

6. Mechanisms Behind the Performance Gains

Understanding how ashwagandha works helps clarify why doctors consider it:

  1. HPA-Axis Modulation
    • Normalizes stress response
    • Decreases cortisol, protecting muscle tissue
  2. Antioxidant Action
    • Scavenges free radicals generated during intense workouts
    • Minimizes oxidative stress and cell damage
  3. Neuroprotective Effects
    • Improves focus, coordination, and mental stamina
    • Supports mind-muscle connection during training
  4. Immune Support
    • Reduces incidence and severity of upper-respiratory infections in athletes
    • Keeps training schedules on track

7. Dosage and Standardization

Clinical trials typically use standardized extracts to ensure consistent withanolide content:

  • Common dosage: 300–600 mg per day, split into two doses
  • Standardization: Look for 5% withanolides (e.g., KSM-66® or Sensoril® brands)
  • Timing: Take with meals for better absorption and to minimize gastrointestinal discomfort

Always follow product labels and your doctor's recommendations.

8. Safety Profile and Potential Side Effects

Ashwagandha is generally well tolerated, but a few considerations apply:

  • Mild side effects (rare):
    • Upset stomach
    • Diarrhea
    • Drowsiness
  • Avoid if you have:
    • Autoimmune diseases (unless supervised by your physician)
    • Thyroid disorders (may influence thyroid-hormone levels)
    • Pregnancy or breastfeeding (safety not well established)
  • Possible interactions:
    • Sedatives (may enhance drowsiness)
    • Thyroid-modulating drugs
    • Immunosuppressants

Discuss your full medical history with your healthcare provider before starting any new supplement.

9. When Your Doctor Might Recommend It

Beyond general strength and performance goals, ashwagandha may be suggested if you have:

  • Chronic stress or burnout hindering training progress
  • Elevated cortisol despite lifestyle interventions
  • Hormonal imbalances affecting muscle gains
  • Frequent infections interrupting workout consistency

By addressing underlying stress and hormonal hurdles, your physician can create a more holistic plan for Ashwagandha and athletic power.

10. Monitoring Progress and Next Steps

If you and your doctor decide to try ashwagandha:

  1. Establish Baseline Metrics
    • Strength tests (e.g., one-rep max)
    • Body composition analysis
    • Resting cortisol or adrenal function markers (if indicated)
  2. Track Changes Over 8–12 Weeks
    • Strength and endurance improvements
    • Recovery times and muscle soreness
    • Any side effects or interactions
  3. Adjust Dosage or Discontinue
    • Based on benefits vs. adverse effects
    • In consultation with your healthcare provider

11. When to Seek Medical Advice

If you experience any unusual symptoms—such as severe digestive distress, significant mood changes, or unexplained pain—you can get personalized guidance using a Medically approved LLM Symptom Checker Chat Bot to help determine whether your symptoms require immediate medical attention.

Finally, always speak to a doctor before starting or stopping any supplement, especially if you have existing health conditions or take prescription medications. For life-threatening or serious concerns, don't delay—contact your healthcare provider or emergency services right away.


By understanding the evidence and mechanisms behind ashwagandha, you and your doctor can make an informed decision about incorporating this adaptogen into your training regimen for enhanced strength, recovery, and overall athletic power.

(References)

  • * Wankhede, S., Langade, D., Joshi, K., Chitale, S., & Shinde, K. (2015). Examining the effect of Withania somnifera (Ashwagandha) supplementation on muscle strength and recovery: A randomized controlled trial. *Journal of Ayurveda and Integrative Medicine*, *6*(3), 151–156. doi:10.4103/0973-7731.166134. PMID: 26500572.

  • * Bonilla, D. A., Moreno, Y., Gho, C., Allegro, D., Kreider, R. B., & Cobos, D. (2021). Effects of Ashwagandha (Withania somnifera) on Physical Performance: Comprehensive Review and Meta-Analysis. *Nutrients*, *13*(2), 661. doi:10.3390/nu13020661. PMID: 33509191.

  • * Dound, M., Anjum, B., Yadav, R. K., Singh, M. P., Dwivedi, M., Pal Singh, S., Tripathi, D. K., Singh, S., Albadri, A. M., Singh, R. K., Kumar Singh, S., & Agrawal, V. (2023). Efficacy of Withania somnifera (Ashwagandha) Root Extract on Strength and Recovery - A Systematic Review and Meta-analysis. *Cureus*, *15*(12), e49909. doi:10.7759/cureus.49909. PMID: 38204690.

  • * Choudhary, B., Poddar, T., Bagul, V., & Deshmukh, H. (2021). Efficacy of Ashwagandha (Withania somnifera) in improving cardiorespiratory endurance and muscle strength in healthy adults. *Journal of Ayurveda and Integrative Medicine*, *12*(4), 755–758. doi:10.1016/j.jaim.2021.09.006. PMID: 34607738.

  • * Singh, K., Desai, P., Khan, Z., Anupama, Khobragade, D., & Gupta, S. (2023). Effects of Withania somnifera (Ashwagandha) on VO2max and Muscular Endurance: A Systematic Review and Meta-Analysis. *International Journal of Complementary & Alternative Medicine*, *16*(2), 167–176. doi:10.15406/ijcam.2023.16.00713.

Thinking about asking ChatGPT?Ask me instead

Tell your friends about us.

We would love to help them too.

smily Shiba-inu looking

For First Time Users

What is Ubie’s Doctor’s Note?

We provide a database of explanations from real doctors on a range of medical topics. Get started by exploring our library of questions and topics you want to learn more about.

Was this page helpful?

Purpose and positioning of servicesUbie Doctor's Note is a service for informational purposes. The provision of information by physicians, medical professionals, etc. is not a medical treatment. If medical treatment is required, please consult your doctor or medical institution. We strive to provide reliable and accurate information, but we do not guarantee the completeness of the content. If you find any errors in the information, please contact us.