Introduction: Discrepancies of nicotine content labelling of e-liquid products has been reported and it may have existed to circumvent legal requirements that imposes restrictions on the sale of nicotine-containing products in the market. Mandatory labelling requirement of e-liquid products is still pending in Malaysia. This case study aimed to examine labelling discrepancies of e-liquid refill products declared as nicotine-free sold in e-commerce platform in Malaysia. Methods: A total of 10 Malaysian-made e-liquid refill samples were purchased via a popular e-commerce platform available to Malaysian. The e-liquid refills were specifically chosen because it was declared to contain zero-nicotine. Nicotine concentrations were measured using a Gas-chromatography with flame-ionisation detector (GC-FID). Results: About 80% (n = 8) of the purchased e-liquid samples were contained nicotine despite being declared as nicotine-free. The average nicotine levels were 1.092 (0.989) mg/mL. Conclusion: This case study confirmed the presence of labelling discrepancies which non-comply with the existing Malaysian Poison Act. Such non-compliance will contribute to the sale of unrestricted nicotine products. As a result, it will increase addiction among novice smokers because e-liquid refills declared as “nicotine free” contained nicotine. Implementation of stringent legal requirement on the nicotine content of local e-liquid products is urgently needed as it will support the accomplishment of Malaysian Tobacco Endgame.