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products may be counterfeit, contaminated, or incorrectly dosed

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Use within 2-3 weeks

Learn more: read our full guide to microdosing tirzepatide and the GLP-1 microdosing chart

Retatrutide vs tirzepatide weight management research represents one of the most closely watched comparisons in metabolic science in 2026

Average results varied by dose and time frame: Participants taking a 4 mg dose lost 47.2 pounds (lb), or about 19 percent of their starting body weight