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Ketoacidosis: six days after the first injection

A woman with no diabetes went to intensive care with ketoacidosis six days after her first tirzepatide dose. She recovered in 48 hours.

Neil Sanders5 min read
One patient, in her early thirties, no diabetesday 0first tirzepatide injectionday 6vomiting, epigastric pain, fatigueEDlow glucose, high ketones, acidosisICUfluids, dextrose, insulin48 hoursrecoveredBefore the second dose. Serious metabolic events like this are rare.

The detail that makes this worth a page is the timing. Six days in is before the second injection — not during a titration step, not at a maintenance dose, not after a gap like the restart case. It was the first dose anyone had ever given her.

What happened

Persistent vomiting, epigastric pain and fatigue. [1] Laboratory work showed mild hypoglycemia alongside a high-anion-gap metabolic acidosis with markedly elevated ketone levels.

She was treated in the emergency department and then admitted to intensive care, where she was given intravenous fluids, electrolytes, dextrose and insulin. She made a good recovery within 48 hours.

Rare, and the page has to say so

Gastrointestinal effects on these drugs are common. Metabolic complications of this severity are not, and the paper says as much in its opening lines.

A case report exists because an event is unusual enough to be worth writing down. One patient establishes that something can happen, never how often — which is the opposite limitation from a database of tens of thousands of reports, which can count reports and still cannot produce a rate.

What a buyer can actually use

That vomiting which does not stop is a different thing from the nausea everybody is warned about. The warned-about kind eases; this did not, and six days of it landed someone in intensive care.

Nothing in a subscription covers an emergency department visit, and no seller’s support channel is an after-hours clinical service. That gap between what a checkout sells and what a person might need is the same one behind telling an anesthesiologist you are on one of these and behind knowing what is actually in the vial.

Frequently asked

Can you get ketoacidosis without diabetes?
This patient did. Her glucose was mildly low rather than high, with a high-anion-gap metabolic acidosis and markedly raised ketones.
When did it happen?
Six days after her first injection — before a second dose, and outside the dose escalation that most warnings focus on.
How common is this?
One case cannot say. The paper describes serious metabolic complications on these drugs as rare, in contrast to gastrointestinal effects, which are common.
Did she recover?
Yes, within 48 hours, after treatment in the emergency department and intensive care with fluids, electrolytes, dextrose and insulin.

Sources

  1. [1] Sadiq H, et al. (2026). When Weight Loss Turns Dangerous: A Case Report of Tirzepatide-Induced Ketoacidosis in a Non-diabetic Woman Cureus. PMID 42639616

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