Is GuineaPig free to use?

Yes, completely free. GuineaPig pulls data from ClinicalTrials.gov and adds compensation estimates, eligibility matching, and category filters to make it easier to browse. We don't charge volunteers or collect payment information.

How does GuineaPig estimate compensation?

Pay ranges are rough estimates based on the study's phase, duration, and typical industry rates. Phase 1 inpatient studies tend to pay the most because they require overnight stays. These are not confirmed by sponsors — always contact the study team directly for the actual compensation.

How often is trial data updated?

Trial listings are pulled from ClinicalTrials.gov in real time. New studies appear as soon as sponsors register them with the NIH. Study status, enrollment counts, and location data are updated whenever sponsors submit changes to the registry.

Does GuineaPig screen me or sign me up?

No. GuineaPig is a search tool only. When you find a trial you're interested in, click 'View on ClinicalTrials.gov' to get the study team's contact information. You'll go through the sponsor's own screening and enrollment process.

Diet & Nutrition Trials
for Healthy Volunteers

From gut microbiome research to supplement testing, diet and nutrition studies are growing fast. These trials often have simpler protocols and shorter commitments.

2,011

Active Trials

$500 - $2,000

Typical Pay (estimated)

1-4 weeks

Duration

Great for first-time participants

Featured Trial

Highest Paying in Category

$1,950 – $18,000

Estimated compensation

A Study to Assess the Relative Bioavailability of Oral ABBV-932 in Healthy Adult Participants

AbbVie

GrayslakePhase 142 enrolling

View trial details

All Diet Trials

View all 2,011

High PayingPhase 1 / Phase 2

$1,950 – $18,000

Est. compensation

A Study to Evaluate BMS-986470 in Healthy Volunteers and Participants With Sickle Cell Disease

Bristol-Myers Squibb

Birmingham, Alabama184 enrolling

High PayingPhase 1

$1,950 – $18,000

Est. compensation

A Study to Evaluate Novel KarX and KarT Prototypes Versus the KarXT and KarX-EC Reference Following Single Doses, and to Explore the Effect of Food After Multiple Doses of Selected Prototypes in Healthy Adult Participants

Bristol-Myers Squibb

Nottingham, Nottinghamshire72 enrolling

High PayingPhase 1

$1,950 – $18,000

Est. compensation

A Study to Evaluate the Safety, Tolerability, and Drug Levels of BMS-986521 in Healthy Participants.

Bristol-Myers Squibb

Anaheim, California106 enrolling

High PayingPhase 1

$1,950 – $18,000

Est. compensation

A Trial to Learn if ALN-PNP is Safe and Well Tolerated in Healthy Adults and Adult Participants With Metabolic Dysfunction-Associated Steatotic Liver Disease (MASLD)

Regeneron Pharmaceuticals

Glendale, California156 enrolling

High PayingPhase 1 / Phase 2

$1,950 – $18,000

Est. compensation

A Phase I/II Study of ITU512 in Healthy Participants and Patients With Sickle Cell Disease

Novartis Pharmaceuticals

Miami, Florida161 enrolling

High PayingPhase 1

$1,950 – $18,000

Est. compensation

A Study to Learn More About the Safety of BIIB145 and How it is Processed in the Body of Healthy Adult Participants

Biogen

Austin, Texas104 enrolling

High PayingPhase 1

$1,950 – $18,000

Est. compensation

A Study to Learn About the Safety of BIIB142 and How it is Processed in the Body of Healthy Adult Participants Aged 18 to 55 Years Old

Biogen

Las Vegas, Nevada78 enrolling

High PayingPhase 1

$3,250 – $15,000

Est. compensation

A Phase 1 Study of a Tablet Form of ABBV-722 Taken With and Without Food in Healthy Adult Participants

AbbVie

Grayslake, Illinois12 enrolling

High PayingPhase 1 / Phase 2

$1,500 – $12,000

Est. compensation

Safety, Tolerability, Pharmacokinetics, and Pharmacodynamics of VT7208 in Healthy Participants and MS Patients

Vidya Therapeutics Inc

Adelaide, South Australia100 enrolling

High PayingPhase 1

$1,500 – $12,000

Est. compensation

Developing Biomarkers of Dietary Intake: Dose Dependent Measurement of Sugar Intake

National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)

Phoenix, Arizona60 enrolling

High PayingPhase 1

$2,500 – $12,000

Est. compensation

Study of Food Effects of VV119 Capsules in Chinese Healthy Volunteers

Vigonvita Life Sciences

Hefei, Anhui16 enrolling

View all 2,011 trials

Explore Other Categories

Psychedelic Vaccine Weight Loss Brain & Neuroscience Pharmaceutical Drug Studies

Learn more: How Much Do Trials Pay? · First-Timer's Guide

GuineaPig pulls live data from ClinicalTrials.gov (NIH/NLM). Pay estimates are approximate ranges based on study type and are not confirmed by sponsors. Eligibility indicators use limited criteria only. We do not provide medical advice. Always contact the study team directly to confirm compensation, full eligibility, and risks before enrolling.

Diet & Nutrition Trialsfor Healthy Volunteers

Featured Trial

A Study to Assess the Relative Bioavailability of Oral ABBV-932 in Healthy Adult Participants

All Diet Trials

A Study to Evaluate BMS-986470 in Healthy Volunteers and Participants With Sickle Cell Disease

A Study to Evaluate Novel KarX and KarT Prototypes Versus the KarXT and KarX-EC Reference Following Single Doses, and to Explore the Effect of Food After Multiple Doses of Selected Prototypes in Healthy Adult Participants

A Study to Evaluate the Safety, Tolerability, and Drug Levels of BMS-986521 in Healthy Participants.

A Trial to Learn if ALN-PNP is Safe and Well Tolerated in Healthy Adults and Adult Participants With Metabolic Dysfunction-Associated Steatotic Liver Disease (MASLD)

A Phase I/II Study of ITU512 in Healthy Participants and Patients With Sickle Cell Disease

A Study to Learn More About the Safety of BIIB145 and How it is Processed in the Body of Healthy Adult Participants

A Study to Learn About the Safety of BIIB142 and How it is Processed in the Body of Healthy Adult Participants Aged 18 to 55 Years Old

A Phase 1 Study of a Tablet Form of ABBV-722 Taken With and Without Food in Healthy Adult Participants

Safety, Tolerability, Pharmacokinetics, and Pharmacodynamics of VT7208 in Healthy Participants and MS Patients

Developing Biomarkers of Dietary Intake: Dose Dependent Measurement of Sugar Intake

Study of Food Effects of VV119 Capsules in Chinese Healthy Volunteers

Explore Other Categories

Diet & Nutrition Trialsfor Healthy Volunteers

Featured Trial

A Study to Assess the Relative Bioavailability of Oral ABBV-932 in Healthy Adult Participants

All Diet Trials

A Study to Evaluate BMS-986470 in Healthy Volunteers and Participants With Sickle Cell Disease

A Study to Evaluate Novel KarX and KarT Prototypes Versus the KarXT and KarX-EC Reference Following Single Doses, and to Explore the Effect of Food After Multiple Doses of Selected Prototypes in Healthy Adult Participants

A Study to Evaluate the Safety, Tolerability, and Drug Levels of BMS-986521 in Healthy Participants.

A Trial to Learn if ALN-PNP is Safe and Well Tolerated in Healthy Adults and Adult Participants With Metabolic Dysfunction-Associated Steatotic Liver Disease (MASLD)

A Phase I/II Study of ITU512 in Healthy Participants and Patients With Sickle Cell Disease

A Study to Learn More About the Safety of BIIB145 and How it is Processed in the Body of Healthy Adult Participants

A Study to Learn About the Safety of BIIB142 and How it is Processed in the Body of Healthy Adult Participants Aged 18 to 55 Years Old

A Phase 1 Study of a Tablet Form of ABBV-722 Taken With and Without Food in Healthy Adult Participants

Safety, Tolerability, Pharmacokinetics, and Pharmacodynamics of VT7208 in Healthy Participants and MS Patients

Developing Biomarkers of Dietary Intake: Dose Dependent Measurement of Sugar Intake

Study of Food Effects of VV119 Capsules in Chinese Healthy Volunteers

Explore Other Categories

Diet & Nutrition Trials
for Healthy Volunteers

Diet & Nutrition Trials
for Healthy Volunteers