Semaglutide
aka Ozempic, Wegovy, Rybelsus
Mimics the "I'm full" hormone your gut sends after eating. Sold as Ozempic / Wegovy.
Technically · GLP-1 agonist
In one sentence
The original blockbuster weight-loss shot — slows your stomach, kills the urge to eat between meals.
— A weekly appetite brake. Hunger fades, portions shrink, scale moves.
Half-life
~7 days
Stays active about a week — one shot per week (or a daily pill).
Dosing
Once weekly (subQ); daily for oral form
How often you take a dose
Route
SubQ · Oral
How it goes into the body
Status
FDA
Approved by the FDA for prescription use
What it is
The drug that started the modern weight-loss revolution. It copies a hormone (GLP-1) that your gut already releases when you eat. Approved by the FDA for diabetes (Ozempic), obesity (Wegovy), and as a daily pill (Rybelsus).
The full technical answer
FDA-approved GLP-1 receptor agonist. Ozempic for type 2 diabetes, Wegovy for chronic weight management, Rybelsus for oral T2D.
How it works
After a meal, your gut releases GLP-1 to tell your brain "you're full" and your pancreas "release insulin." Semaglutide is a stronger, longer-lasting version of that same signal. Hunger fades, portions shrink, blood sugar stays stable.
The full technical answer
Activates GLP-1 receptors to suppress appetite, slow gastric emptying, and enhance glucose-dependent insulin secretion.
What the research says
STEP trials showed ~15% weight loss at 68 weeks at 2.4mg/week.
Sources: STEP-1 NEJM · FDA Wegovy label
Common dosing ranges
- Range
- Start 0.25 mg/week, titrate to 2.4 mg/week
- Frequency
- Once weekly (subQ); daily for oral form
- Duration
- Long-term per FDA label
Sources: FDA label
How to take it
Practical guidance synthesized from clinical protocols, FDA labels, and clinician interviews. Always cross-check with a prescribing physician.
Best time of day
SubQ: same day each week, any time. Oral (Rybelsus): first thing in the AM, fasted, with 4 oz of water, then nothing else for 30 minutes.
With food or fasted
SubQ: doesn't matter. Oral: STRICTLY fasted — 30 min before any food, drink, or other medication.
How long to cycle
Long-term. Titrate slowly: 0.25 → 0.5 → 1.0 → 1.7 → 2.4 mg weekly (typically each step lasts 4 weeks).
When to get off
Severe GI side effects, pancreatitis symptoms (sharp belly pain that radiates to back), or thyroid lumps. Discuss break protocols with doctor — going off cold turkey often leads to rapid regain.
Administration
Side effects
Common
- Nausea
- Diarrhea
- Vomiting
- Constipation
Serious / theoretical
- Pancreatitis
- Gallbladder disease
- Thyroid C-cell tumor warning
Sources: FDA label
Further reading & listening
Where the experts go deeper.
Curated from the PeptideFacts expert directory — vetted YouTube channels, podcasts, books, and communities. No anecdote-only or supplier-affiliated picks.
Videos
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