The Claim

Once-weekly subcutaneous retatrutide is associated with increased rates of nausea, vomiting, constipation, and hypersensitivity reactions compared to placebo in adults with overweight, obesity, and/or type 2 diabetes, suggesting a predictable but non-severe safety profile.

Source: Effects of once-weekly subcutaneous retatrutide on weight and metabolic markers: A systematic review and meta-analysis of randomized controlled trials

What the research says

Supports is higher

Support is ahead, but a single strong opposing study can change this.

Supports
69score
Challenges
0score

These are independent scores, not a percentage. Higher-grade studies count more, so a single strong opposing study can outweigh several weaker ones.

Correlation
1 study reviewed
In plain English

Taking a weekly shot of retatrutide might make you feel more nauseous, throw up, get constipated, or have allergic reactions than if you took a fake shot — but these side effects aren’t life-threatening and are kind of expected.

See the scientific wording

Once-weekly subcutaneous retatrutide is associated with increased rates of nausea, vomiting, constipation, and hypersensitivity reactions compared to placebo in adults with overweight, obesity, and/or type 2 diabetes, suggesting a predictable but non-severe safety profile.

What the research says

1 study
  1. Study: Effects of once-weekly subcutaneous retatrutide on weight and metabolic markers: A systematic review and meta-analysis of randomized controlled trials

    The study found that people taking this weekly shot for weight loss had more stomach issues like nausea and constipation, and some allergic reactions, but nothing too serious — just like the claim says.

Score breakdown, mechanism chain, raw evidence, ideal studies needed & 1 supporting studies

Fit Body Science verdict — we translate health claims into clear verdicts backed by peer-reviewed research.

Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.