Omnia SanaPlant Comparison
Guarana vs Ashwagandha
A side-by-side comparison of two medicinal plants — every documented constituent, action, use, safety note and cited source, assembled automatically from the Omnia Sana database.
At a glance
Guarana and Ashwagandha: they share 5 indicated uses (cognitive function, fatigue / low energy, memory, …); 3 pharmacological actions in common.
Evidence face-off — shared uses
| Condition | Guarana | Ashwagandha | Verdict |
|---|---|---|---|
| Cognitive function | 8/10 | 1/10 | Stronger for Guarana |
| Fatigue / low energy | 9/10 | 1/10 | Stronger for Guarana |
| Memory | 8/10 | 1/10 | Stronger for Guarana |
| Metabolic support | 5/10 | 1/10 | Stronger for Guarana |
| Muscle soreness | 6/10 | 1/10 | Stronger for Guarana |
Evidence scores (1–10) are computed from the tier of each cited source. “Comparable” means the two scores are within one point. Follow a score to its detailed sources.
Key Constituents
The dominant bioactive constituent, present at 2-4 times the concentration found in coffee beans by weight; responsible for guarana's stimulant, ergogenic and thermogenic effects.
Polyphenols thought to slow caffeine absorption and to contribute antioxidant activity.
Minor stimulant alkaloids alongside caffeine.
Steroidal lactones considered the principal bioactive compounds, responsible for most of the plant's adaptogenic, anti-inflammatory and anticancer research interest.
Minor tropane-type alkaloids contributing to the traditional sedative reputation.
Glycowithanolides linked to adaptogenic and immunomodulatory activity.
Pharmacological Actions
Physical performance / strength improvement
Traditional & Indicated Uses
inferred from neuroprotective action
inferred from ergogenic action
inferred from anti-inflammatory action
inferred from antidiabetic action
inferred from anticancer action
inferred from neuroprotective action
inferred from immunomodulator action
inferred from ergogenic action
inferred from anti-inflammatory action
inferred from sedative action
inferred from neuroprotective action
inferred from antidiabetic action
inferred from ergogenic action
Safety, Cautions & Contraindications
Guarana contains very high levels of caffeine (2–4 times that of coffee by weight). All the cautions of caffeine apply — avoid in cardiac arrhythmia, hypertension, anxiety disorders, insomnia, and during pregnancy and breastfeeding. Should not be combined with other stimulants, MAOIs, or medications affected by caffeine. Risk of dependence and withdrawal symptoms with prolonged high-dose use.
Duke (2002) rates guarana as ++ and notes CNS-stimulant, anti-aggregant, diuretic, and thermogenic activities, primarily due to its high caffeine content (3–5%). It has positive chronotropic and inotropic effects on the heart. Duke flags guarana as genotoxic and mutagenic at the experimental level (score 1), which warrants caution with high-dose supplementation. Contraindicated in cardiovascular disease, anxiety disorders, peptic ulcers, and during pregnancy. Interactions include potentiation of other stimulants and anticoagulants (Duke, 2002).
Generally well-tolerated in clinical trials at doses up to 600 mg/day for up to 12 weeks. Common side effects may include mild drowsiness, gastrointestinal upset, and diarrhea at higher doses. Contraindicated during pregnancy due to potential abortifacient effects. May interact with sedatives, immunosuppressants, thyroid medications, and blood sugar medications. People with autoimmune diseases, hyperthyroidism, or scheduled for surgery should consult healthcare providers before use. May cause allergic reactions in sensitive individuals. Not recommended for children without medical supervision.
Duke (2002) classifies ashwagandha activities primarily at the experimental level (score 1), with adaptogenic, sedative, immunostimulant, and anti-inflammatory actions demonstrated in animal and in vitro models. Root preparations are used at 2–3 g powdered root three times daily, or 150–300 mg of standardized extract. Importantly, the plant has documented abortifacient and antifertility properties in animal studies, and its use should be avoided during pregnancy. It may potentiate the effects of barbiturates and sedatives (Duke, 2002).
External Ids
Botanical Description
Woody climbing shrub or liana (Sapindaceae) in its native forest habitat, though often cultivated and pruned as a shrub. Leaves are alternate and pinnately compound with 5 leaflets. Small greenish-white flowers are borne in axillary panicles, followed by a red-orange, three-lobed capsule that splits open to reveal black seeds partly covered by a white aril - a fruit likened in Indigenous Amazonian folklore to a staring eye.
Erect, branching perennial shrub with soft, downy, oval to lance-shaped leaves. Small, inconspicuous, greenish-yellow bell-shaped flowers are borne in the leaf axils, followed by a small orange-red berry enclosed in a papery, lantern-like calyx, giving rise to the name 'winter cherry'.[5]
Habitat
Native to the Amazon basin, particularly Brazil, where it has long been cultivated by Indigenous peoples (notably the Sateré-Mawé); grows in tropical, humid lowland forest conditions.
Native to the drier regions of India, the Middle East and parts of Africa; cultivated in warm, semi-arid climates on well-drained soils, notably in central and western India.[5]
Harvesting
Ripe fruit capsules are hand-harvested as they split open; seeds are removed, roasted, and traditionally ground into a paste with water and shaped into sticks for storage, or dried and powdered.
The root is dug in winter from plants around one year old, when withanolide content is highest, then cleaned, cut and dried; the leaves are picked through the growing season.[5]
Traditional Uses
Guarana seed has a long Amazonian Indigenous tradition as a stimulant tonic for fatigue and stamina and as a ceremonial and social beverage. Its very high caffeine content (greater by weight than coffee beans) underlies its modern use for cognitive performance, physical endurance and metabolic support, supported by clinical trials.[5]
Ashwagandha root is one of the most important rasayana (rejuvenative) tonics of Ayurvedic medicine, traditionally used to build strength and vitality, support healthy stress response, and promote restful sleep; this traditional adaptogenic reputation is now supported by clinical trials of standardised root extract for stress, sleep and physical performance.[1, 5]
Preparations
Dosage
Clinical trials for stress and sleep commonly use around 300-600 mg of standardised root extract daily, in divided doses, over several weeks. Educational reference only, not a prescription.
References
Lookalikes Review
Drug Class Interactions
Not documented
Pairings
Not documented
Both ashwagandha and valerian are calming, sleep-promoting herbs; using them together may add to drowsiness and sedation, so take care especially before driving or when using other sedatives.[1, 23]
References & Sources
- Hack, B., Penna, E.M., Talik, T., Chandrashekhar, R. and Millard-Stafford, M (2023) 'Effect of Guarana (Paullinia cupana) on Cognitive Performance: A Systematic Review and Meta-Analysis', Nutrients, 15(2), pp. 434. doi:10.3390/nu15020434 Meta-analysis / review
https://doi.org/10.3390/nu15020434 - de Araujo, D.P., Pereira, P.T.V.T., Fontes, A.J.C., Marques, K.D.S. and others (2021) 'The use of guarana (Paullinia cupana) as a dietary supplement for fatigue in cancer patients: a systematic review with a meta-analysis', Supportive Care in Cancer, 29(12), pp. 7171-7182. doi:10.1007/s00520-021-06242-5 Meta-analysis / review
https://doi.org/10.1007/s00520-021-06242-5 - Aldhahrani, A (2021) 'Protective effects of guarana (Paullinia cupana) against methotrexate-induced intestinal damage in mice', Food Science & Nutrition, 9(7), pp. 3397-3404. doi:10.1002/fsn3.2101 Preclinical
https://doi.org/10.1002/fsn3.2101 - Sirena, D.H., Araujo, A.B., Silveira, A.B.T., Serafini, M.A. and others (2024) 'Guarana (Paullinia cupana) as a potential tool for mesenchymal stromal cells priming in regenerative medicine', Brazilian Journal of Medical and Biological Research, 57, pp. e13286. doi:10.1590/1414-431X2024e13286 Preclinical
https://doi.org/10.1590/1414-431X2024e13286 - Torres, E.A.F.S., Pinaffi-Langley, A.C.D.C., Figueira, M.S., Cordeiro, K.S. and others (2022) 'Effects of the consumption of guarana on human health: A narrative review', Comprehensive Reviews in Food Science and Food Safety, 21(1), pp. 272-295. doi:10.1111/1541-4337.12862 Traditional / reference
https://doi.org/10.1111/1541-4337.12862 - Penna, E.M., Harp, A., Hack, B., Talik, T.N. and Millard-Stafford, M (2024) 'Guarana (Paullinia cupana) but Not Low-Dose Caffeine Improves Cycling Time-Trial Performance Versus Placebo', International Journal of Sport Nutrition and Exercise Metabolism, 34(1), pp. 30-37. doi:10.1123/ijsnem.2023-0148 Randomized trial
https://doi.org/10.1123/ijsnem.2023-0148 - Lima, N.D.S., Numata, E.P., Mesquita, L.M.S., Dias, P.H. and others (2017) 'Modulatory Effects of Guarana (Paullinia cupana) on Adipogenesis', Nutrients, 9(6), pp. 635. doi:10.3390/nu9060635 Preclinical
https://doi.org/10.3390/nu9060635 - Lima, N.D.S., Teixeira, L., Gambero, A. and Ribeiro, M.L (2018) 'Guarana (Paullinia cupana) Stimulates Mitochondrial Biogenesis in Mice Fed High-Fat Diet', Nutrients, 10(2), pp. 165. doi:10.3390/nu10020165 Preclinical
https://doi.org/10.3390/nu10020165 - Zamberlan, D.C., Arantes, L.P., Machado, M.L., da Silveira, T.L. and others (2020) 'Guarana (Paullinia cupana Mart.) protects against amyloid-beta toxicity in Caenorhabditis elegans through heat shock protein response activation', Nutritional Neuroscience, 23(6), pp. 444-454. doi:10.1080/1028415X.2018.1517473 Preclinical
https://doi.org/10.1080/1028415X.2018.1517473 - Abboud, R.S., Ribeiro, I.C.A., Pereira, V.A., Correa, L.B.N. and others (2020) 'Guarana (Paullinia cupana) consumption improves hepatic and renal parameters in alloxan-induced diabetic rats', Nutricion Hospitalaria, 37(2), pp. 343-348. doi:10.20960/nh.02759 Preclinical
https://doi.org/10.20960/nh.02759 - Amaral, J.F., Neto, F.R.A., Ferreira, F.M., Leite, E.P. and Andrade, C.M.B (2015) 'Guarana (Paullinia cupana): toxic behavioral effects in laboratory animals and antioxidants activity in vitro', pp. 174--182. Traditional / reference
https://scholar.google.com/scholar?q=Guarana%20%28Paullinia%20cupana%29%3A%20toxic%20behavioral%20effects%20in%20laboratory%20animals%20and%20antioxidants%20activity%20in%20vitro - Haskell, C.F., Kennedy, D.O., Wesnes, K.A., Milne, A.L. and Scholey, A.B (2007) 'A double-blind, placebo-controlled, multi-dose evaluation of the acute behavioural effects of guarana in humans', 21(1), pp. 65--70. doi:10.1177/0269881106063815 Randomized trial
https://doi.org/10.1177/0269881106063815 - Royal Botanic Gardens, Kew (n.d.). Available at: https://powo.science.kew.org Traditional / reference
https://powo.science.kew.org - Duke, J.A (2002) 'Handbook of Medicinal Herbs, Second Edition'. Traditional / reference
https://scholar.google.com/scholar?q=Handbook%20of%20Medicinal%20Herbs%2C%20Second%20Edition
- Cheah, K.L., Norhayati, M.N., Husniati Yaacob, L. and Abdul Rahman, R (2021) 'Effect of Ashwagandha (Withania somnifera) extract on sleep: a systematic review and meta-analysis', PLoS One, 16(9), pp. e0257843. doi:10.1371/journal.pone.0257843 Meta-analysis / review
https://doi.org/10.1371/journal.pone.0257843 - Speers, A.B., Cabey, K.A., Soumyanath, A. and Wright, K.M (2021) 'Effects of Withania somnifera (ashwagandha) on stress and the stress-related neuropsychiatric disorders anxiety, depression, and insomnia', Current Neuropharmacology, 19(9), pp. 1468-1495. doi:10.2174/1570159X19666210712151556 Meta-analysis / review
https://doi.org/10.2174/1570159X19666210712151556 - Arumugam, V., Vijayakumar, V., Balakrishnan, A., B Bhandari, R., Boopalan, D., Ponnurangam, R., Sankaralingam Thirupathy, V. and Kuppusamy, M (2024) 'Effects of Ashwagandha (Withania somnifera) on stress and anxiety: a systematic review and meta-analysis', Explore, 20(6), pp. 103062. doi:10.1016/j.explore.2024.103062 Meta-analysis / review
https://doi.org/10.1016/j.explore.2024.103062 - Lopresti, A.L., Smith, S.J., Malvi, H. and Kodgule, R (2019) 'An investigation into the stress-relieving and pharmacological actions of an ashwagandha (Withania somnifera) extract: a randomized, double-blind, placebo-controlled study', Medicine, 98(37), pp. e17186. doi:10.1097/MD.0000000000017186 Randomized trial
https://doi.org/10.1097/MD.0000000000017186 - Paul, S., Chakraborty, S., Anand, U., Dey, S., Nandy, S., Ghorai, M., Saha, S.C., Patil, M.T., Kandimalla, R. and Prockow, J (2021) 'Withania somnifera (L.) Dunal (Ashwagandha): a comprehensive review on ethnopharmacology, pharmacotherapeutics, biomedicinal and toxicological aspects', Biomedicine & Pharmacotherapy, 143, pp. 112175. doi:10.1016/j.biopha.2021.112175 Meta-analysis / review
https://doi.org/10.1016/j.biopha.2021.112175 - Dar, N.J., Hamid, A. and Ahmad, M (2015) 'Pharmacologic overview of Withania somnifera, the Indian ginseng', Cellular and Molecular Life Sciences, 72(23), pp. 4445-4460. doi:10.1007/s00018-015-2012-1 Meta-analysis / review
https://doi.org/10.1007/s00018-015-2012-1 - Pandit, S., Srivastav, A.K., Sur, T.K., Chaudhuri, S., Wang, Y. and Biswas, T.K (2024) 'Effects of Withania somnifera extract in chronically stressed adults: a randomized controlled trial', Nutrients, 16(9), pp. 1293. doi:10.3390/nu16091293 Randomized trial
https://doi.org/10.3390/nu16091293 - Wankhede, S., Langade, D., Joshi, K., Sinha, S.R. and Bhattacharyya, S (2015) 'Examining the effect of Withania somnifera supplementation on muscle strength and recovery: a randomized controlled trial', Journal of the International Society of Sports Nutrition, 12, pp. 43. doi:10.1186/s12970-015-0104-9 Randomized trial
https://doi.org/10.1186/s12970-015-0104-9 - Choudhary, D., Bhattacharyya, S. and Bose, S (2017) 'Efficacy and safety of ashwagandha (Withania somnifera (L.) Dunal) root extract in improving memory and cognitive functions', Journal of Dietary Supplements, 14(6), pp. 599-612. doi:10.1080/19390211.2017.1284970 Randomized trial
https://doi.org/10.1080/19390211.2017.1284970 - Tiwari, S., Gupta, S.K. and Pathak, A.K (2021) 'A double-blind, randomized, placebo-controlled trial on the effect of Ashwagandha (Withania somnifera dunal.) root extract in improving cardiorespiratory endurance and recovery in healthy athletic adults', Journal of Ethnopharmacology, 272, pp. 113929. doi:10.1016/j.jep.2021.113929 Randomized trial
https://doi.org/10.1016/j.jep.2021.113929 - Singh, N., Yadav, S.S., Rao, A.S., Nandal, A., Kumar, S., Ganaie, S.A. and Narasihman, B (2020) 'Review on anticancerous therapeutic potential of Withania somnifera (L.) Dunal', Journal of Ethnopharmacology, 270, pp. 113704. doi:10.1016/j.jep.2020.113704 Meta-analysis / review
https://doi.org/10.1016/j.jep.2020.113704 - Bonilla DA, Moreno Y, Gho C, et al. Effects of ashwagandha (2021) ';6(1):20', 6(1). Traditional / reference
https://scholar.google.com/scholar?q=%3B6%281%29%3A20. - 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 (2012) ';34(3):255-262', 34(3). Traditional / reference
https://scholar.google.com/scholar?q=%3B34%283%29%3A255-262. - Downer S, Berkowitz SA, Harlan TS, et al. Ashwagandha (2023) ';10:1043034'. Available at: https://pmc.ncbi.nlm.nih.gov/articles/PMC10147008/ Traditional / reference
https://pmc.ncbi.nlm.nih.gov/articles/PMC10147008/ - Lopresti AL, Drummond PD, Smith SJ. A randomized, double-blind, placebo-controlled, crossover study examining the hormonal and vitality effects of ashwagandha (2019) ';13(2):1557988319835985', 13(2). Traditional / reference
https://scholar.google.com/scholar?q=%3B13%282%29%3A1557988319835985. - Lopresti AL, Smith SJ, Malvi H, Kodgule R. An investigation into the stress-relieving and pharmacological actions of an ashwagandha (2019) ';98(37):e17186', 98(37). Available at: https://pmc.ncbi.nlm.nih.gov/articles/PMC6979308/ Traditional / reference
https://pmc.ncbi.nlm.nih.gov/articles/PMC6979308/ - National Institutes of Health Office of Dietary Supplements. Ashwagandha: Is it helpful for stress, anxiety, or sleep? Health Professional Fact Sheet. 2024. https://ods.od.nih.gov/factsheets/Ashwagandha-HealthProfessional/ (2024) 'https://ods.od.nih.gov/factsheets/Ashwagandha-HealthProfessional/'. Available at: https://ods.od.nih.gov/factsheets/Ashwagandha-HealthProfessional/ Traditional / reference
https://ods.od.nih.gov/factsheets/Ashwagandha-HealthProfessional/ - Salve J, Pate S, Debnath K, Langade D. Adaptogenic and anxiolytic effects of ashwagandha root extract in healthy adults: A double-blind, randomized, placebo-controlled clinical study. Cureus. 2019;11 (2019) ';11(12):e6466', 11(12). Traditional / reference
https://scholar.google.com/scholar?q=%3B11%2812%29%3Ae6466. - Singh N, Bhalla M, de Jager P, Gilca M. An overview on ashwagandha: A Rasayana (2011) ';8(5 Suppl):208-213'. Traditional / reference
https://scholar.google.com/scholar?q=%3B8%285%20Suppl%29%3A208-213. - Duke, J.A (2002) 'Handbook of Medicinal Herbs, Second Edition'. Traditional / reference
https://scholar.google.com/scholar?q=Handbook%20of%20Medicinal%20Herbs%2C%20Second%20Edition - Sharma, A.K., Basu, I. and Singh, S (2018) 'Efficacy and Safety of Ashwagandha Root Extract in Subclinical Hypothyroid Patients: A Double-Blind, Randomized Placebo-Controlled Trial', Journal of Alternative and Complementary Medicine, 24(3), pp. 243-248. doi:10.1089/acm.2017.0183 Randomized trial
https://doi.org/10.1089/acm.2017.0183 - Gannon, J.M., Forrest, P.E. and Roy Chengappa, K.N (2014) 'Subtle changes in thyroid indices during a placebo-controlled study of an extract of Withania somnifera in persons with bipolar disorder', Journal of Ayurveda and Integrative Medicine, 5(4), pp. 241-245. doi:10.4103/0975-9476.146566 Clinical study
https://doi.org/10.4103/0975-9476.146566 - Caus, M.N., Lupoae, M. and Chitescu, C.L (2026) 'Efficacy and Safety of Herbal Supplements with Anxiolytic, Antidepressant, and Sedative Action: A Review of Clinical Data and Toxicological Risks', Pharmaceuticals, 19(3), pp. 399. doi:10.3390/ph19030399 Meta-analysis / review
https://doi.org/10.3390/ph19030399 - Cheah, K.L., Norhayati, M.N., Husniati Yaacob, L. and Abdul Rahman, R (2021) 'Effect of Ashwagandha (Withania somnifera) extract on sleep: a systematic review and meta-analysis', PLoS One, 16(9), pp. e0257843. doi:10.1371/journal.pone.0257843 Meta-analysis / review
https://doi.org/10.1371/journal.pone.0257843 - Makhlouf, E.A., AlamElDeen, Y.K., El-Shiekh, R.A. and Okba, M.M (2024) 'Unveilling the antidiabetic potential of ashwagandha (Withania somnifera L.) and its withanolides - a review', Natural Product Research, 39(24), pp. 7203-7218. doi:10.1080/14786419.2024.2439009 Meta-analysis / review
https://doi.org/10.1080/14786419.2024.2439009
Generated automatically from the Omnia Sana plant database and its cited sources. For educational purposes only — not medical advice. Always consult a qualified practitioner before using medicinal plants.