Sleep Supplement Clinical Trial Services: Assessing Sleep Quality and Stress in Volunteers

A sleep support supplement is a dietary supplement developed to support sleep quality or to help people relax from stress. Common ingredients include amino acids, minerals and plant extracts. A sleep supplement clinical trial measures outcomes in volunteers who take the actual product, using standard sleep and stress assessments, and compares them with a control group. This differs from laboratory testing, which measures the amount of a compound or its activity in cells.

The market for sleep and stress supplements continues to grow in Thailand and worldwide, and consumers are paying more attention to sleep quality and stress management. Brand owners who want to state on a label or in marketing materials that a product “supports healthy sleep” or “helps you relax from stress” must have scientific evidence for that statement, and food advertising must comply with the Food Act B.E. 2522 (1979), including advertising approval where the law requires it.

The main outcomes for these products, such as sleep quality and stress level, are experiences that consumers perceive for themselves, so they must be assessed with tools designed specifically for clinical research. VISBIO Co., Ltd. provides study design, project management and project coordination for clinical studies of these dietary supplements, working with a network of partner clinical research sites and hospitals under Good Clinical Practice (GCP). The service runs from selecting patient-reported outcome measures (PROMs) and planning the study protocol to the final report, for sponsors in Thailand and abroad.

Many consumers believe that the registration number on a dietary supplement label is proof that the product works. Under the Food Act B.E. 2522 (1979), however, the approval of dietary supplements by the Thai Food and Drug Administration (Thai FDA) focuses mainly on product safety and quality and does not confirm clinical efficacy. The food serial number (Thai FDA number) is therefore not evidence that a product helps with sleep or stress as stated on the label or in marketing materials.

This distinction matters to brand owners because health-conscious consumers, modern trade retailers and export partners increasingly want evidence they can verify. The gap between “having a Thai FDA number” and “having evidence of efficacy” is therefore an important issue, especially when a brand wants to make functional claims such as “supports healthy sleep” or “helps you relax from stress”.

A clinical trial answers this question directly by measuring changes in volunteers who take the actual product, using standard assessments that have been validated and are accepted internationally. The resulting data support product development and evidence-based communication.

Sleep is a complex biological process made up of alternating cycles of non-rapid eye movement sleep (non-REM sleep) and rapid eye movement sleep (REM sleep). Each stage plays a role in physical recovery, memory processing and hormone regulation. Stress and sleep are linked by biological mechanisms. Under stress, the hypothalamic-pituitary-adrenal axis (HPA axis) stimulates the release of the hormone cortisol, which may disrupt the release of the hormone melatonin and directly affect sleep quality.

A particular challenge in measuring sleep and stress outcomes is that both are subjective experiences, which laboratory instruments alone cannot fully capture. Two volunteers with similar electroencephalogram (EEG) readings or hormone levels may report very different sleep quality. Clinical research in this field therefore uses validated patient-reported outcome measures (validated PROMs) as the main measurement tools.

In a Perspective article, Evans et al. (2022) argue that studies of dietary supplements in healthy volunteers often yield smaller effect sizes than drug studies, and that the effects of nutrients often appear across several outcomes at once. Trial designs developed for drugs may therefore not be sensitive enough to detect the effects of dietary supplements, and the authors propose rethinking study design and endpoint selection to suit this product category. In practice, choosing validated measurement tools that are sensitive to change, and planning the sample size around the expected effect size, are key parts of the design. Tools that have not been validated, or that are designed in-house without supporting evidence, make study results less credible internationally.

Every study follows GCP and takes into account the subjective nature of sleep and stress outcomes. VISBIO designs the study and manages it from planning through to delivery of the report, while volunteers are recruited and cared for by the physicians and investigators of the research site responsible for the study.

Step 1: Consultation and protocol design

Every project starts with understanding the claim the brand owner wants to substantiate. VISBIO analyzes the product’s objectives together with the investigators of the partner research site to define a suitable study design, including the choice of a primary endpoint for sleep or stress. This step covers the volunteer inclusion/exclusion criteria and a sample size estimation that gives adequate statistical power.

Step 2: Approval from a human research ethics committee

Before any study begins, the protocol and the informed consent documents must be approved by a human research ethics committee (Institutional Review Board, IRB) in every case. VISBIO coordinates the preparation of documents with the site’s investigators and follows up on the revisions requested by the committee until approval is granted.

Step 3: Volunteer recruitment and screening

Once approval is granted, the research site responsible for the study recruits and screens volunteers according to the criteria in the protocol. The site’s physicians and investigators make sure that every volunteer receives complete information, gives written informed consent and passes health screening before joining the study. VISBIO coordinates schedules and project readiness between the sponsor and the research site.

Step 4: Study conduct and data collection

Volunteers receive the product, and data are collected at the time points set in the protocol using standard assessments accepted in international clinical research. Examples are the Pittsburgh Sleep Quality Index (PSQI), which assesses sleep quality over the previous month (Buysse et al., 1989); the Insomnia Severity Index (ISI), which measures the perceived severity of sleep problems and can track change over time (Bastien et al., 2001); and the Perceived Stress Scale (PSS) (Cohen et al., 1983). Adverse events are recorded throughout the study in line with GCP. The site’s investigators assess and safeguard volunteer safety, while VISBIO, as project manager, monitors progress and data completeness.

Step 5: Data analysis and reporting

Once data collection is complete, all data are analyzed statistically according to the statistical analysis plan (SAP) set at the design stage and summarized in a full scientific report in an internationally used format. VISBIO coordinates the analysis and delivers the report to the sponsor. The report supports product development and evidence-based communication.

This service is designed for dietary supplements in various formats that aim to communicate benefits related to sleep or stress. Examples of suitable ingredient types include:

The examples in the table are ingredient types found in the dietary supplement market. Each ingredient used in products sold in Thailand must meet Thai FDA requirements, and some ingredients require a safety assessment before an application is filed. Some markets permit ingredients such as melatonin, 5-HTP and ashwagandha in dietary supplements under local regulations; study designs follow the rules of the target market.

As consumers demand more and more evidence, clinical study data for sleep and stress products open up several strategic opportunities.

Premium product positioning

Sleep and stress supplements backed by clinical study data can be positioned in the premium segment on a reasoned and credible basis, because health-conscious consumers tend to favor products with clear scientific evidence. Outcomes actually measured in the product group compared with a control group give the positioning a factual basis, rather than relying on ingredients or the manufacturing process alone.

Negotiating with modern trade and e-commerce channels

Many e-commerce platforms and modern trade buyers request supporting scientific documents for health products in the sleep and stress category. A clinical study report prepared under GCP is an important document that makes negotiations and listing in these channels smoother, and it gives an advantage over competitors without such data.

Reducing legal risk and expanding into export markets

Sleep and stress claims backed by clinical study evidence reduce the risk that advertising will be considered exaggerated under the Food Act B.E. 2522 (1979). In addition, many export markets, such as the European Union, Japan and ASEAN, require claim substantiation before a product goes on sale. A study designed and reported in line with international practice is therefore an important part of preparing to enter these markets, although each country has its own requirements.

Using scientific data in communication

Data actually measured in a clinical study can be used across several communication channels, including digital media, product labels and point-of-sale materials. Any use in advertising must first obtain advertising approval from the Thai FDA as required by law.

1. Dietary supplements sold in Thailand must be approved by the Thai FDA and hold a food serial number (Thai FDA number) before the study starts. For products from international sponsors, VISBIO assesses the legal requirements with the research site on a project-by-project basis.
2. VISBIO and the research site design the study plan specifically for each product and its claims.
3. Every study must be approved by a human research ethics committee before it starts, without exception.

For brands that want to build a complete evidence package, VISBIO supports every level, from laboratory (in vitro) testing of sleep support supplements, such as serotonin content analysis and melatonin-like activity testing in HEK293T cells, through to clinical studies in volunteers as described on this page. Laboratory data help select formulas and explain mechanisms, while clinical studies measure outcomes in people who take the actual product. GCP applies to studies in humans, while laboratory work follows the test method of each assay. Planning both levels of evidence with a single coordinator keeps the data at each stage consistent and free of gaps. See other laboratory services in the in vitro efficacy testing category, and clinical trial services for other dietary supplements on the knee health supplement clinical trial page.

How does this service differ from laboratory testing of sleep supplements?

Laboratory (in vitro) testing measures the amount of a compound or its activity in cells, while a clinical trial measures outcomes in volunteers who take the actual product using standard assessments and compares them with a control group. VISBIO offers both levels, and laboratory data can help select a formula before a clinical study starts.

Why do sleep and stress studies use assessments that volunteers complete themselves?

Because sleep quality and stress are experienced individually, and laboratory instruments alone cannot capture them fully. Volunteers with similar brain-wave readings or hormone levels may report very different sleep quality, so studies use validated assessments as the main tools.

Which assessments are used to measure outcomes?

Examples include the Pittsburgh Sleep Quality Index (PSQI), the Insomnia Severity Index (ISI) and the Perceived Stress Scale (PSS), together with adverse event recording throughout the study. The tools actually used are selected according to the claim and the volunteer group of each project.

Does a product with a Thai FDA number still need clinical data?

The Thai FDA number for a dietary supplement is based mainly on an assessment of safety and quality. It does not confirm that the product helps with sleep or stress as stated on the label. If you want to communicate such benefits, clinical data provide supporting evidence, and advertising must still comply with food law.

What is VISBIO’s role, and who looks after the volunteers?

VISBIO designs the study and provides project management and coordination with a network of partner clinical research sites and hospitals. Volunteers are recruited and cared for by the physicians and investigators of the site responsible for the study.

Do study results guarantee advertising approval?

No. Study results support product development and evidence-based communication. Use on labels or in advertising must comply with the law and obtain approval from the relevant authorities where the law requires it. VISBIO does not guarantee study outcomes or regulatory decisions.

If you are interested in a clinical trial for your sleep or stress supplement, contact VISBIO for a free initial consultation through the following channels:

• Contact form: https://visbio.co.th/en/contact-us/
• LINE Official Account: @visbio
• Email: service@visbio.co.th
• Phone: 098-635-4197 (+66 98 635 4197)
• Timeline: please ask our team directly.

See all clinical trial services on VISBIO’s clinical trial page.

• VISBIO’s role: VISBIO designs studies and provides project management and project coordination with a network of partner clinical research sites and hospitals, for sponsors in Thailand and abroad. Volunteers are recruited and cared for by the physicians and investigators of the site responsible for the study.
• Research ethics: Every study in humans starts only after approval by a human research ethics committee and is conducted in line with Good Clinical Practice (GCP). All volunteers give informed consent after receiving complete information.
• Drugs and herbal medicines: Studies must follow the requirements of the Thai Food and Drug Administration (Thai FDA) that apply to the product. The sponsor, the research site and VISBIO plan these steps together from the start of the project.
• Use of results: Study results support product development and evidence-based communication. Use on labels or in advertising must comply with the law for each product type, with approval from the relevant authorities where the law requires it. VISBIO does not guarantee study outcomes or regulatory decisions.
• Foods and dietary supplements: Study results are not a claim that a product diagnoses, treats, cures, mitigates or prevents any disease.
• Timeline: This depends on the study design and the approval process. Please ask our team directly.

References:

1. Bastien, C. H., Vallières, A., & Morin, C. M. (2001). Validation of the Insomnia Severity Index as an outcome measure for insomnia research. Sleep Medicine, 2(4), 297–307. https://doi.org/10.1016/S1389-9457(00)00065-4
2. Buysse, D. J., Reynolds, C. F., III, Monk, T. H., Berman, S. R., & Kupfer, D. J. (1989). The Pittsburgh Sleep Quality Index: A new instrument for psychiatric practice and research. Psychiatry Research, 28(2), 193–213. https://doi.org/10.1016/0165-1781(89)90047-4
3. Cohen, S., Kamarck, T., & Mermelstein, R. (1983). A global measure of perceived stress. Journal of Health and Social Behavior, 24(4), 385–396. https://doi.org/10.2307/2136404
4. Evans, M., Lewis, E. D., Antony, J. M., Crowley, D. C., Guthrie, N., & Blumberg, J. B. (2022). Breaking new frontiers: Assessment and re-evaluation of clinical trial design for nutraceuticals. Frontiers in Nutrition, 9, 958753. https://doi.org/10.3389/fnut.2022.958753