The fastest weight loss protocol with the best evidence base is GLP-1 + lifestyle. 12 weeks at peak dose produces 10-15% body weight loss in most users. The protocol's job is to protect what matters during that loss: muscle mass and metabolic adaptation.
01 · CANDIDATE CHECK
Are you a candidate?
Open the GLP-1 Decision Tree guide first. If you're not in the candidate zone, run Fat Loss (Sustainable) instead.
02 · TITRATION
Weeks 1-4. Slow start.
Semaglutide 0.25 → 0.5 mg, or Tirzepatide 2.5 → 5 mg. Weekly.
Most side effects (nausea, constipation, fatigue) happen during titration. Push through with anti-nausea management, not by skipping doses or speeding the ladder.
- Hydration 2.5L+ daily
- Fiber 30g+ daily
- Anti-nausea: ginger, B6, peppermint
- Stop at the lowest dose that produces appetite suppression
03 · ACTIVE LOSS
Weeks 5-10. Maximum effective dose.
Hold at the dose that produces ~1-2 lb/week loss.
Protein at 1g per pound of lean mass. This is the most important variable. GLP-1s suppress appetite, including for protein — actively prioritize protein at every meal.
Resistance training 3-4x/week. Non-negotiable. Without it, ~30% of weight lost is muscle. With it, ~10-15% is muscle.
Walking quota: 8,000+ steps daily. NEAT (non-exercise activity thermogenesis) preservation.
Mid-point check: Week 8: re-weigh, re-measure. Losing ~1 lb/week or faster: maintain dose. Faster than 2 lb/week: you're losing too much muscle. Slow down, increase protein, or drop a dose tier.
04 · OFFRAMP
Weeks 11-12 and beyond.
Hold at peak for 3-6 months, then taper.
Don't stop suddenly. Appetite rebound + lower resting metabolic rate = weight regain.
Standard taper: hold at peak dose until goal hit + 3 months. Then step down one rung every 4-8 weeks. Hold at each step until weight stable 4 weeks.
Maintenance dose: many users find a 25-50% dose works long-term for appetite control without continued loss.
05 · TRACKING
Weekly numbers.
- Weight (morning, fasted, weekly average)
- Waist + hip circumference
- Bi-weekly progress photos (front, side, back)
- Strength on big lifts (proxy for muscle preservation)
- DEXA at start and end if budget allows
Disclaimer: GLP-1 agonists are prescription medications requiring physician oversight. Warnings include thyroid C-cell tumors, pancreatitis, gallbladder disease, severe GI effects. This protocol does not constitute medical advice.