Can I drink alcohol whilst using injectable weight loss treatment? 25 April 2024 17:07 We advise avoiding alcohol due to the potential side effects of vomiting and nausea. Related articles Can I take antibiotics with injectable weight loss treatment? What BMI do I need to be to start treatment? What are potential side effects? How to get in contact Can I use an injectable weight loss treatment if I’ve had bariatric / gastric surgery?