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Type 2 DiabetesJune 2023Summary reviewed September 2026

Weekly Insulin Shot Lowered Blood Sugar More Than Daily Insulin in Type 2 Diabetes

People with type 2 diabetes who switched to a once-weekly insulin injection had better blood sugar control after six months than those taking daily insulin. Their A1C levels dropped to 7.2% with the weekly shot versus 7.4% with the daily shot. Low blood sugar episodes were rare with both treatments.

What the trial was testing

The ONWARDS 2 enrolled 526 patients with type 2 diabetes. The study was sponsored by Novo Nordisk A/S and tracked outcomes across the full group of patients who matched the trial's eligibility profile.

It was a large trial designed to confirm whether the treatment works well enough for wider use. Trials at this stage are designed to produce evidence regulators and physicians can act on — not just observations to follow up later.

What the results showed

Weekly insulin lowered A1C to 7.2% versus 7.4% with daily insulin after six months.

The lancet. Diabetes & endocrinology · 2023 · NCT04770532

These findings — that weekly insulin brought blood sugar to 7.2% versus 7.4% with daily insulin — were published in the The lancet. Diabetes & endocrinology and represent the headline result of the study.

Researchers tracked outcomes across 526 patients enrolled in the trial. The result was consistent enough across the group that the team felt confident reporting it.

What this means for patients

For patients with type 2 diabetes, this result changes the calculus on what to ask their care team about. Whether it changes day-to-day care depends on factors like disease subtype, prior treatments, and where the patient is in their care journey.

What you can do now

This treatment showed better blood sugar control than the current standard daily insulin, with the convenience of just one shot per week instead of seven. However, this weekly insulin is not yet FDA-approved. If you're interested in once-weekly insulin options, talk to your doctor about whether clinical trials are available or when this might become an option.

Eligibility for the treatments mentioned above depends on specific test results and clinical history. Bring this summary, the trial name, and your most recent labs or pathology report to your next visit.