GLP-1 Medications Explained: Semaglutide vs. Tirzepatide

GLP-1 receptor agonists have changed the way physicians approach metabolic health. Instead of relying on willpower alone, these medications work with your body's own appetite-regulating hormones to make sustained weight loss achievable.

How GLP-1s work

GLP-1 (glucagon-like peptide-1) is a hormone your gut releases after eating. It signals fullness to the brain, slows gastric emptying, and improves insulin response. GLP-1 medications mimic that signal for days at a time, which is why patients report that constant food noise quiets down within the first few weeks.

Semaglutide

Semaglutide is a once-weekly GLP-1 agonist with the longest clinical track record for weight management. In trials, patients on a therapeutic dose lost an average of roughly 15% of body weight over 68 weeks when paired with lifestyle changes.

• Once-weekly dosing
• Gradual titration to reduce nausea
• Strong evidence for appetite and cravings

Tirzepatide

Tirzepatide is a dual GIP/GLP-1 agonist. By activating a second receptor, it tends to produce greater average weight loss — around 20% in pivotal trials — and many patients report smoother appetite control.

• Once-weekly dosing
• Dual-receptor mechanism
• Often chosen when semaglutide results plateau

Which is right for you?

That decision belongs to a licensed physician who reviews your history, labs, medications, and goals. Both options are titrated slowly, and side effects such as nausea, fatigue, or constipation are typically managed by adjusting the dose rather than stopping treatment.

What to expect on protocol

1. Complete your intake so a physician can review your history.
2. Start at a low dose and titrate monthly.
3. Prioritize protein and resistance training to protect lean mass.
4. Check in with your care team about side effects and progress.

Weight loss medication is a tool, not a replacement for nutrition and movement. Used together, the combination is what produces durable results.