Custom and Standard Placebo Supply for Clinical Research

Zeebo Research has supplied clinical trials and academic studies since 2015. We provide standard and custom placebo pills and tablets for research teams worldwide — with full IRB documentation support, Certificate of Analysis, and multi-year supply continuity.

Request a Quote → View Published Studies

What Zeebo Research Provides

Standard Supply — Conventional RCT

→ White placebo capsules — size-2, no logo
→ White placebo tablets — round, 10mm, no logo
→ White placebo tablets — oblong, 17mm, no logo
→ No minimum order for standard products

Custom Supply

→ Custom shape, size, color, and coating
→ Weight-matched to active treatment
→ Custom logo or markings
→ Matched appearance for double-blind protocols

Supply for Open-Label Placebo (OLP) Studies

→ White placebo tablets — round, 10mm, Ze logo — available on Amazon
→ Blue-white placebo capsules — size-1, Ze logo — no longer available

Research on patient preferences suggests tablets may be favored over capsules for open-label placebo use. ↗ View study (Journal of Psychosomatic Research, 2025)

IRB and Grant Application Support

Every Zeebo Research order includes full documentation for IRB review and grant applications:

→ Personal IRB Letter of Support — written by Uwe Heiss, MSc ETH Zürich
→ Certificate of Analysis for every batch
→ Description of FDA-registered production sites and sourcing
→ Microbial and heavy metals testing documentation
→ Annual stability testing updates for multi-year studies
→ In-depth responses to all IRB information requests

Zeebo placebo pills have been reviewed by IRBs and used as the investigational agent in peer-reviewed studies published in PAIN, Scientific Reports (Nature), Obesity (Wiley), and Applied Psychology: Health and Well-Being, among others.

↗ See all 10+ published studies naming Zeebo as placebo supplier

Standard Products — Available on Amazon

Standard Zeebo placebo products are available directly on Amazon for smaller studies or researchers who prefer to order through Amazon procurement. Reference the SKU numbers below for IRB applications or purchase orders.

Product	Description	SKU	Order
White Capsules — No Logo	No logo, 75 units, 250mg MCC each	D6-E6TG-6O3W	View on Amazon →
White Tablets — Round, Ze Logo	Round, 10mm, Ze logo, 45 units, 250mg MCC each	E6-QO6L-Y2K9	View on Amazon →
White Tablets — Oblong, No Logo	Oblong, 17mm, no logo, 45 units, 500mg MCC each	2B-PVR9-GISI	View on Amazon →

Order Direct from Zeebo Research

Larger quantities and additional formats are available by ordering directly through Zeebo Research. Contact us for pricing, minimum quantities, and lead times.

Product	Description	SKU	Order
White Tablets — Round, No Logo	Round, 10mm, no logo, 500 units, 250mg MCC each	—	Order Direct →
White Tablets — Oblong, No Logo	Oblong, 17mm, no logo, 500 units, 500mg MCC each	—	Order Direct →

Discontinued Products — For Reference Only

The following product has been discontinued. SKU retained for reference in existing IRB applications and published studies.

Product	Description	SKU	Order
Blue-white Capsules Discontinued	Size-1, Ze logo, 45 units, 250mg MCC each	ES-1HWN-7EXH	No longer available

Round tablets contain 250mg Microcrystalline Cellulose (MCC) per unit. Oblong tablets contain 500mg MCC per unit. All products are vegan, lactose-free, and sugar-free. Produced at FDA-registered sites in the USA following cGMP.

Request a Quote

For custom placebo or larger standard orders, contact Zeebo Research directly. We respond to all inquiries within one business day.

Contact Zeebo Research →

(802) 276-0762‬ MONDAY – FRIDAY, 9-5PM ET
zeeboeffect@gmail.com