Product Reports Resources Pricing Login Book a demo
COMPANY PROFILE

Ritter Pharmaceuticals

Explore full profile

Ritter Pharmaceuticals discovers and commercializes treatments for gastrointestinal diseases

Los Angeles, United StatesFounded 2004Biotech & Life Sciences
Valuation $22M Market cap · 2014

About Ritter Pharmaceuticals

Ritter Pharmaceuticals, Inc. was a clinical-stage biopharmaceutical company focused on modulating the gut microbiome to address gastrointestinal diseases. The company was co-founded in 2004 by Andrew J. Ritter and his father, Ira Ritter. The inspiration for the company stemmed from Andrew Ritter's own personal struggles with lactose intolerance, which began in childhood. His early research and self-experimentation as a teenager formed the basis for the company's lead product candidate.

The company's primary business was the development of novel therapeutics. Its lead drug candidate, RP-G28, was a non-digestible oligosaccharide designed to stimulate lactose-metabolizing bacteria in the colon. This mechanism aimed to adapt the gut microbiome, thereby reducing symptoms associated with lactose intolerance such as abdominal pain, bloating, and gas. The intended treatment regimen was a 30-day course, after which patients could potentially tolerate dairy products long-term. Ritter Pharmaceuticals operated in the biotechnology sector, specifically targeting the large market of individuals suffering from lactose intolerance. As a clinical-stage company, its business model was centered on research and development, funded through capital raises. Andrew Ritter led the company through its initial public offering on the NASDAQ (ticker: RTTR), raising significant institutional capital to fund its clinical trials.

A significant milestone for Ritter Pharmaceuticals was advancing RP-G28 into a pivotal Phase 3 clinical trial, named "Liberatus". However, in September 2019, the company announced that the trial failed to meet its primary endpoint, as it did not show a statistically significant difference in symptom reduction compared to a placebo. Following this setback and a review of strategic alternatives, Ritter Pharmaceuticals entered into a definitive reverse merger agreement with Qualigen, Inc. in January 2020. The merger was completed in May 2020, resulting in the formation of a new entity named Qualigen Therapeutics, Inc. (NASDAQ: QLGN). The combined company shifted its focus to Qualigen's pipeline of cancer and infectious disease therapeutics, and Ritter Pharmaceuticals ceased to exist as an operating entity. Its officers, including Andrew and Ira Ritter, resigned from their positions upon the merger's completion, with Ira Ritter taking a seat on the new company's board.

Source: Dealroom company data

At a glance

Status
Listed
Founded
2004
Headquarters
Los Angeles, United States
Listing
IPO 2015
Sector
Biotech & Life Sciences

Investors

2 investors on the cap table

From Dealroom's funding and investor records, grouped by the round each investor first entered.

Seed1 investor entered at this stage

  • Javelin Venture Partners

Series B and later1 investor entered at this stage

  • Aspire Capital Fund
Team profiled 4 named & role-tagged
Founders Hidden — book a demo/100 quality score
Key operators Hidden — book a demo quality score
Potential founders Hidden — book a demo likely future founders
Startup mafia Hidden — book a demo alumni-founded startups
Talent movements Hidden — book a demo in · Hidden — book a demo out past 12 months

Source: Dealroom Talent Intelligence.

Global footprint

Workforce and web traffic by country
Workforce by country
2 countries with
team presence
🇦🇪 United Arab Emirates25%
🇲🇽 Mexico25%
2 countries shown

Market sentiment

Posts on X, past 7 days

An AI-synthesised read of the highest-engagement posts about Ritter Pharmaceuticals on X, ranked by likes and reposts, corporate channels excluded.

Reading the room on X — pulling top posts and synthesizing themes…

Source: X recent search ranked by engagement (likes + retweets) · Synthesis by Claude · Cached for 1 hour

See Ritter Pharmaceuticals on the full Dealroom platform

Live deal flow, founder pedigree, hiring signals, revenue trajectory, and the full cap table.