| Course | NS460 Dietary Supplements and Nutraceuticals |
|---|---|
| Unit | Unit 7 |
| Paper type | Botanical case study |
| Length | About 880 words, 6 pages double-spaced |
| Format | APA 7 student paper |
| School | Purdue University Global |
| Program | BS in Nutrition Science |
| Updated | October 2026 |
Free sample paper for NS460 Unit 7
An Old Root, a New Warning: A Unit 7 Botanical Case Study of Ashwagandha for a Yoga Instructor Taking It Nightly
[Student Name]
Purdue University Global
NS460: Dietary Supplements and Nutraceuticals
Unit 7 Botanical Case Study
[Instructor Name]
[Date]
The client is composite; the stress trials and the liver injury case series cited are real.
The Client
Priya, 36, teaches six yoga classes a week and works part time as a receptionist. For eight months she has taken a 600 mg ashwagandha root extract capsule every night for stress and sleep, after a student recommended it. She also takes a multivitamin and, occasionally, an over-the-counter sleep aid. She recently read an article about liver injury from ashwagandha and wants to know whether she should stop.
Botanical Identity
Ashwagandha is Withania somnifera, a small shrub in the nightshade family native to India, North Africa and the Middle East. The root is the part most used in commercial products, though some extracts include leaves. Products are often standardized to compounds called withanolides, but the percentage and the extraction method vary, so two capsules labeled 600 mg may not be equivalent.
Traditional Use
In Ayurveda, ashwagandha is classed as a rasayana, a preparation thought to promote strength and longevity, and it has been used for centuries for fatigue, weakness and poor sleep. Traditional use describes how a plant has been valued. It does not show whether a modern extract taken nightly for months is effective or safe.
Modern Evidence on Stress
The modern evidence comes mainly from small trials of branded extracts. In a randomized, double-blind trial of 64 adults with chronic stress, 300 mg of a root extract twice daily for 60 days reduced scores on stress scales and lowered serum cortisol compared with placebo (Chandrasekhar et al., 2012). A second trial of 60 adults found that a different extract reduced anxiety scores and morning cortisol over 60 days, though a reduction on a broader stress scale did not reach significance (Lopresti et al., 2019). Both trials were short and small and tested commercial extracts, so they cannot show long-term effects or tell us whether results apply to other products.
The Safety Record
In 2020, physicians from Iceland and the U.S. Drug-Induced Liver Injury Network described five people who developed jaundice after taking ashwagandha (Björnsson et al., 2020). Symptoms began 2 to 12 weeks after starting, and included nausea, tiredness and severe itching. The liver injury was mainly cholestatic, affecting bile flow, and jaundice and itching lasted for weeks to months. None developed liver failure, and liver tests returned to normal within one to five months in the four patients followed. Chemical testing confirmed ashwagandha in the products, and no other toxic compounds were found, though four patients were also taking other supplements.
The liver reports do not show that ashwagandha is dangerous for most users, but they show that the injury can occur in healthy people taking ordinary products, which is enough to change how a long-term user should be monitored.
Case series cannot show how often injury occurs. Given how widely the herb is used, the reported cases suggest liver injury is rare, but they also suggest it is under-recognized, since many people do not tell their doctors about supplements. Separate reports have linked ashwagandha to changes in thyroid hormone levels, so people with thyroid conditions are often advised to avoid it.
How the Herb Became a Trend
Ashwagandha moved from Ayurvedic practice to mainstream American shelves through the wellness market's interest in adaptogens, a loose term for herbs said to help the body cope with stress. Social media videos promising calm, better sleep and higher energy pushed sales of capsules, gummies and powders. Few of those products match the extracts used in trials, and marketing often blends the trial findings on stress with broader claims about hormones, weight and athletic performance that rest on much less evidence. A client who started taking it because a friend recommended it, as Priya did, has usually heard the marketing version.
Applying the Evidence to Priya
Priya's eight months of nightly use are longer than any trial. She has had no symptoms. Her occasional sleep aid adds a second sedating product, which deserves a conversation with a pharmacist. She is not pregnant, which matters because ashwagandha is commonly advised against in pregnancy.
Recommendations
1. Priya does not need to stop in a panic, but she should know the warning signs: yellowing skin or eyes, dark urine, persistent itching, nausea or unusual tiredness. If any appear, she should stop and contact her doctor.
2. She should tell her primary care provider she takes ashwagandha, so liver tests can be checked at her next visit.
3. She could consider whether she still needs it, by stopping for a few weeks and noticing whether her stress and sleep change.
4. If she continues, she should buy a brand carrying a third-party testing seal, because withanolide content and even identity differ between products.
5. She should avoid combining it with sedating sleep aids without checking with a pharmacist.
Conclusion
Ashwagandha's record runs from centuries of traditional use to a handful of small modern trials and a recent case series of liver injury. For Priya, that record supports cautious continued use with monitoring, rather than either alarm or reassurance.
References
Björnsson, H. K., Björnsson, E. S., Avula, B., Khan, I. A., Jonasson, J. G., Ghabril, M., Hayashi, P. H., & Navarro, V. (2020). Ashwagandha-induced liver injury: A case series from Iceland and the US Drug-Induced Liver Injury Network. Liver International, 40(4), 825-829. https://doi.org/10.1111/liv.14393
Chandrasekhar, K., Kapoor, J., & Anishetty, S. (2012). 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 Journal of Psychological Medicine, 34(3), 255-262. https://doi.org/10.4103/0253-7176.106022
Lopresti, A. L., Smith, S. J., Malvi, H., & 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), e17186. https://doi.org/10.1097/MD.0000000000017186
Reading the NS 460 Unit 7 instructions
Unit 7 of NS460 asks students to write a case study of one botanical, tracing its history of use, evidence and safety and applying them to a client. Prompts usually want traditional use, modern research, regulatory or safety events and a client-centered recommendation. Begin with the client and the question she brings. Identify the plant by its scientific name and the part used, and note standardization issues. Summarize traditional use without treating it as proof. Report the best modern trials with their sizes, durations and limits. Describe safety reports accurately, saying what case reports can and cannot show. Explain how the herb became popular. Apply the evidence to the client's specific use and other products. End with practical, in-scope recommendations. Three to five pages is typical.
How this NS460 Unit 7 example is built
The sample opens with the client's routine, her other products and her question. A section on botanical identity names Withania somnifera, the root and the variability of withanolide content. Traditional use is described as a rasayana in Ayurveda. The modern evidence section reports two small 60-day trials of branded extracts. The safety section summarizes the five cases of cholestatic liver injury, their latency, recovery and confirmed product content. A highlighted sentence weighs the case series fairly, and thyroid concerns are mentioned. A section on the adaptogen trend explains how marketing outruns the trials. Applying the evidence to the client leads to five numbered recommendations and a balanced conclusion.
Where the points sit in the NS460 Unit 7 rubric
Botanical case studies are generally graded on accurate history, quality of evidence review, fair treatment of safety data and the fit of recommendations to the client. Most points usually go to presenting both efficacy and safety evidence accurately, with their limits. Instructors reward clear distinctions between traditional use, small trials and case reports. Fair interpretation of a case series, neither dismissive nor alarmist, shows judgment. Applying evidence to the client's dose, duration and other products adds depth. Recommendations should be specific, include warning signs and stay within scope. Discussing product variability is expected. APA 7 references to trials and safety reports complete the rubric.
NS460 Unit 7 help: mistakes that cost points
Frequent problems include treating centuries of traditional use as evidence of safety or effectiveness. Writers sometimes report small industry-supported trials as definitive. Liver injury reports are either dismissed because they are rare or presented as proof the herb is dangerous for everyone. The client's actual dose, duration and other products are often ignored. Recommendations may tell the client to stop or continue without monitoring or warning signs. Product variability is overlooked. If you have a botanical assigned but are unsure how to weigh its trials against its safety reports, our team can help you build the timeline and apply it to your client.
Get an NS460 Unit 7 example written to your instructions
For Unit 7 the essentials are the botanical named, the case details supplied and the rubric. With those, its safety record is built in dated stages, each separating the known from the suspected, and applied to the case without advice to the client. Every regulatory event is sourced. First sample at no cost, in 24-48h. The paper above is an original model document written by our desk, not a submitted student paper and not an official Purdue University Global document.
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NS460 Unit 7 questions, answered
Can I choose a botanical with a less dramatic history?
Where the prompt allows a choice, yes, but a product whose record changed over time gives the case more to analyze. Comfrey, green tea extract and ephedra are other examples with dated safety events. A botanical with a quiet history can still work if the paper examines why its safety data are thin rather than treating the silence as reassurance.
How much traditional-use history should I include?
Enough to show how the plant was prepared and used before commercial extracts, because that contrast often explains the modern safety questions. A paragraph or two sourced to ethnobotanical or pharmacological reviews, not product sites, usually suffices. Describe the practice respectfully and accurately; traditional use is context and a source of hypotheses, not proof of safety or benefit.
Do I need to decide what caused the liver injuries?
No, and naming a definitive cause would overstate the evidence. Present the leading hypotheses, the evidence for and against each, and which ones regulators and reviewers found most persuasive. Saying the cause remains uncertain, with reasons, is the accurate conclusion, and rubrics generally reward precise uncertainty over a tidy resolution the sources cannot support.
Where can I find a free NS460 Unit 7 sample paper?
A complete Unit 7 botanical case study of ashwagandha is on this page, tracing its traditional use, stress trials and liver injury reports and applying them to a yoga instructor who takes it nightly.
Can ashwagandha cause liver injury, according to the NS460 Unit 7 sample?
Rarely, but it can. A 2020 case series described five people who developed jaundice two to twelve weeks after starting it. All recovered or improved, and the case study advises long-term users to know the warning signs and tell their provider.