In one study, participants who took Ozempic saw a 14.9% decrease in body weight
Medically reviewed by Dr Babak Ashrafi Last reviewed: 04 Aug 2025 Tirzepatide weight loss treatment is injected once a week to help you lose weight as part of a wider diet and exercise programme
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Scott Wiener Legislator I think it's great to pursue these other drugs, but that does not in any way mean that we should not be, that doesn't mean that we should avoid other cost reduction strategies around those drugs
Most people start seeing weight loss by week 4, but it becomes more noticeable by week 8 or later, especially after reaching the full dose (1.7 mg or 2.4 mg)