When to worry, when to wait, when to call 911

A small set of symptoms warrants emergency evaluation regardless of how recently you started GLP-1 therapy. Severe upper-abdominal pain that radiates to the back can signal acute pancreatitis, a documented adverse event listed in the FDA prescribing information for every GLP-1 medication.¹ Persistent vomiting beyond 24 hours with the inability to keep fluids down can cause clinically significant dehydration. Sudden vision changes can indicate diabetic retinopathy progression in patients with diabetes. Face swelling, throat tightness, or difficulty breathing point to a potential allergic reaction. A neck lump, persistent hoarseness, or trouble swallowing can relate to the boxed warning for thyroid C-cell tumors. If any of these apply, call 911 or go to the nearest emergency room.

Symptoms in this tier are concerning but not immediately life-threatening. Persistent vomiting under 24 hours, signs of moderate dehydration (dizziness, dark urine, reduced urination), severe constipation lasting more than 5 days, intense fatigue with lightheadedness, and right-upper-quadrant pain after meals (possible gallbladder involvement, which the GLP-1 labels do warn about) all benefit from a same-day check-in. If your prescribing physician cannot respond within 4 hours, urgent care is the next step.

Most patients experience some combination of Tier 3 symptoms during titration. Transient nausea (especially in weeks 1 through 4 and after each dose increase), decreased appetite (the medication doing its job), mild GI changes, mild headache, and injection-site irritation are all common and usually pass.² Hydration is the single most useful self-care: sip water and electrolyte fluids through the day. Smaller, lower-fat meals, a short walk after eating, and a consistent weekly dose time all help. If a Tier 3 symptom worsens, persists beyond a few weeks, or starts affecting hydration or daily function, escalate to your physician. Individual results vary.