GLP-1 Fat Loss Protocol

GLP-1 agonists changed the conversation. For the first time, the peptide community had a class of compounds where the effect was obvious, fast, and hard to argue with. Semaglutide and tirzepatide don't just nibble at body composition — they reliably take people from a weight they've held for a decade to a weight they haven't seen in fifteen years.

That's the good news. The less-good news is that almost no one discusses the muscle-preservation side of the protocol with the seriousness it deserves, and the people who crash-diet on these compounds end up skinny-fat with worse metabolic health than when they started.

This is the slower, more boring version of the protocol. It works.

Who this is for

• Someone with genuine fat to lose (think >15 lbs above ideal) who has struggled with hunger-driven overeating
• Someone whose metabolic markers (A1c, triglycerides, waist circumference) are drifting wrong
• Someone willing to train and eat like they're preserving muscle, not just losing weight

The compounds

• Semaglutide OR Tirzepatide — once weekly, sub-Q. Tirz is stronger per mg and tends to produce less GI rebound, but either works.
• Daily protein target: 1.6-2.2 g/kg body weight — non-negotiable. This is the difference between a good outcome and a bad one.
• Optional: creatine monohydrate 5 g/day. Cheap and supports retained lean mass.

Semaglutide titration schedule

Week	Dose	Weekly day
1-4	0.25 mg	Same day every week (pick it, keep it)
5-8	0.5 mg	Same day
9-12	1.0 mg	Same day
13-16	1.7 mg	Same day — only if tolerating
17+	2.4 mg	Same day — maximum

Tirzepatide titration schedule

Week	Dose
1-4	2.5 mg
5-8	5 mg
9-12	7.5 mg
13-16	10 mg
17+	12.5-15 mg if needed

Do not skip the ramp. The GI side effects on week one of a 1 mg semaglutide dose are genuinely miserable. Titrate.

Why the gradual ramp

GLP-1 agonists slow gastric emptying. The nervous system and gut adapt, but they need time. Pushing the dose too fast triggers nausea, vomiting, and the kind of food aversion that makes people quit the protocol before they see results. Four weeks at each step is not overkill.

What to do with the reduced appetite

This is where most people get it wrong. Eating 1,000 calories a day because "I'm not hungry" is a guaranteed way to lose muscle and rebound fat the second you come off.

Rules:

• Hit protein first. Every meal, every day. If you only eat one thing, eat protein.
• Train with resistance 3-4x a week. Heavier, lower volume is fine — the stimulus is the point.
• Don't glorify the very-low-calorie days. Aim for a ~500 kcal/day deficit, not a 1,500 kcal one.

Weekly template

Day	Notes
Mon	Resistance training. Inject GLP-1 (or chosen weekly day). Eat protein + complex carbs.
Tue	Cardio or rest. Protein + veggies.
Wed	Resistance training. Protein heavy.
Thu	Cardio or rest.
Fri	Resistance training.
Sat	Cardio or rest. Social meal day — plan it around the protocol.
Sun	Rest. Plan next week's food.

What to expect

• Week 1-2: Some nausea, often in the first 24-48 hours after injection. Reduced appetite kicks in early. Weight often dips fast from water.
• Week 3-4: Genuine fat loss visible. Clothing changes. Sugar cravings noticeably quieter.
• Weeks 5-12: Steady 0.5-1.5 lb per week loss if you're eating adequately. The people who drop faster than this are losing muscle — don't.
• Month 4-6: Plateau eventually arrives. Either maintain the dose and hold the new weight, or accept the plateau as the end of the cut.

Cost ballpark

Research-grade semaglutide at community suppliers runs $150-300 for a three-month supply at maintenance dose. Compounded pharmacy options from telehealth providers run $200-400/month. Brand-name Wegovy or Zepbound without insurance is in a different universe — $1,000+/month.

Red flags — when to stop

• Persistent severe nausea or vomiting past the first week at a given dose
• Sulfur burps, severe abdominal pain (pancreatitis warning signs — stop immediately and see a doctor)
• Pronounced muscle loss — if the scale is dropping but your lifts are collapsing, you're not eating enough protein
• Gallbladder pain (right upper quadrant) — known class effect

Coming off

There is no magic taper. Some people step the dose down over 4-8 weeks; others just stop. Appetite returns. Without lifestyle changes locked in — protein floor, training, meal structure — weight regain is the default. Plan the off-ramp before you need it.

Where to go next

• For the mechanism, the Pepperpedia semaglutide entry and tirzepatide entry have the pharmacology.
• The cutting cycle with peptides combines GLP-1 with AOD-9604 for more aggressive body-comp work.
• For visceral fat specifically, the Tesamorelin protocol is a different tool for a specific problem.
• Real-world titration stories are in the Protocol Discussions forum.