Eli Lilly and CompanyLow-dose tirzepatide still produced weight loss, supporting a broader patient base, but lower doses could cut revenue per patient.
A new study reported by Reuters on August 31, 2026 found that patients who stay on the lowest starter doses of GLP-1 weight-loss drugs still lose weight, though far less than at full recommended doses, and experience less nausea. Patients on Eli Lilly's low-dose tirzepatide lost an average of 5.5% of their body weight over a year, versus 2.2% for Novo Nordisk's low-dose semaglutide, compared with 20.2% and 13.7% respectively at the higher, manufacturer-recommended doses seen in earlier trials. The low-dose tirzepatide group also showed higher rates of certain side effects, including constipation and muscle cramps, than the low-dose semaglutide group. The findings support an overall patient base for both companies, since many patients struggle with cost, tolerability, supply, or their personal weight-loss goals, and evidence that lower doses still work could help more patients remain on treatment. However, low-dose treatment could reduce revenue per patient if more users avoid higher maintenance doses, and the study highlights a difficult trade-off between efficacy and tolerability as competition intensifies.
Eli Lilly and CompanyLow-dose tirzepatide still produced weight loss, supporting a broader patient base, but lower doses could cut revenue per patient.
Novo Nordisk A/SLow-dose semaglutide still worked, supporting more patients staying on treatment, though lower doses may reduce revenue per patient.
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