Singapore Authorities Crack Down on Illegal Injectable Peptides Marketed for Fitness

Singapore's HSA warns of serious health risks from illegal, unregistered injectable peptides sold on social media for weight loss and muscle gain.

By: AXL Media

Published: Feb 19, 2026, 3:31 AM EST

Source: Information for this report was sourced from Channel NewsAsia

The Rise of a Social Media Black Market

Injectable peptides have gained massive popularity globally, driven by fitness influencers who tout them as "game changers" for recovery and longevity. In Singapore, personal trainers report that up to 80% of their clients inquire about these substances. Sellers on social media often claim their supplies originate from Malaysia or China, bypassing legal requirements for a doctor’s prescription. HSA is actively working with platforms to remove these non compliant listings.

Serious Health Risks and Lack of Oversight

Medically, certain peptides are used to treat serious conditions like diabetes and obesity, but they must be carefully monitored. Unregulated versions found online may lack purity and proper concentration. Dr. Khoo Chin Meng of the National University Hospital emphasized that without professional monitoring, users are at risk of suffering long term side effects that are not yet fully understood. Potential complications include unintended hormonal shifts and damage to vital organs.

Regulatory Action and Medical Advice

The HSA's advisory follows significant enforcement action. In 2024, over 80 illegal listings for GLP-1 receptor agonist drugs, such as Saxenda, were removed from e-commerce sites. Medical professionals urge the public to prioritize "natural" methods of muscle gain and weight loss through lifestyle changes. They note that many peptides are still in clinical trials, meaning their long term safety profile remains unproven for general fitness use in 2026.