Research · Metabolic medicine · 6 min read

What Is GLP-1 Therapy?

Semaglutide and tirzepatide have changed weight medicine. The right framing is medical, not cosmetic.

Reviewed by Clinical Dermatology ReviewMD Dermatology · IADVL membersUpdated

Your decision stage

  1. 01Research
  2. 02Comparison
  3. 03Evaluation
  4. 04Decision
  5. 05Ready

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Quick answer

GLP-1 receptor agonists (semaglutide, tirzepatide) reduce appetite and improve glycaemic control. They produce meaningful, sustained weight reduction when used inside a medical program — with metabolic workup, nutrition, resistance training and a defined maintenance plan.

Key takeaways

  • 01Medication without behavioural scaffolding rarely sustains results
  • 02Muscle preservation is the unspoken priority
  • 03Brand-name and compounded formulations differ in oversight
  • 04Plan the taper before the first dose

How GLP-1s work

They mimic incretin hormones, slowing gastric emptying and reducing appetite signalling. Effects compound over a 6–12 month titration window.

What a good program looks like

  • 01Baseline labs and body composition
  • 02Nutrition support with protein targeting
  • 03Resistance training for lean-mass preservation
  • 04Defined maintenance and taper plan

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FAQs

Asked often.

Will I regain weight if I stop?

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Without behavioural scaffolding and a structured taper — most patients regain a meaningful portion. Maintenance is the conversation that matters.

What's commonly misunderstood

Patient misconceptions, clarified.

  • 01That GLP-1s are a cosmetic shortcut — they're a metabolic medicine with cardiovascular and gastrointestinal effects
  • 02That weight loss equals fat loss — without protein and resistance training, 20–40% of loss can be lean mass
  • 03That stopping the drug holds the result — most regain happens without a structured taper and behavioural plan

What patients get wrong

Common mistakes to avoid

  • 01Starting without baseline labs, body composition or a clinician-led plan
  • 02Sourcing compounded formulations online without prescriber oversight
  • 03Skipping protein targets and resistance training during the loss phase
  • 04No defined maintenance plan before the first dose is taken

Questions patients forget to ask

The questions that protect your outcome.

  • 01What's my lean-mass preservation strategy through the loss phase?
  • 02What is the taper and maintenance plan after the target is reached?
  • 03What side effects should I expect, and at which titration step?
  • 04How does this plan handle plateaus or non-response at 12 weeks?

Decision checklist

Before you commit, verify every one.

  • Baseline metabolic, thyroid and lipid panel reviewed
  • Protein target and resistance-training plan agreed
  • Prescriber identified and accessible for side-effect management
  • Brand-name vs compounded decision made with full disclosure
  • Taper and maintenance plan written down before dose one

During your consultation

What to actually discuss.

  • 01Personal and family history of pancreatitis, thyroid or gallbladder disease
  • 02Titration schedule and which step you'll be reviewed at
  • 03Nutrition and training scaffolding alongside the medication
  • 04Long-term plan: 6 months, 12 months, and beyond

The decision arc

  1. 01

    Research

    Understand what the category contains and which paths exist.

  2. 02

    Comparison

    Weigh approaches side-by-side and rule out the wrong-fit paths.

  3. 03

    Evaluation

    Confirm candidacy and pressure-test your shortlist.

  4. 04

    Decision

    Prepare specific questions and de-risk the final commitment.

Personalized Guidance

Where are you in the decision?

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Editorial standards

Dermatology content is reviewed by board-certified dermatologists practicing in Pune, Mumbai or Bengaluru.

  1. 01Drafted by the AltisPath decision-content team
  2. 02Reviewed by a practicing clinician in the relevant specialty
  3. 03Cross-checked against current Indian clinical practice
  4. 04Updated when guidelines or pricing change materially

Medical disclaimer: AltisPath is a treatment decision and guidance platform. This article is educational and is not a substitute for a personal medical consultation. Treatment decisions should be made with a qualified clinician who has reviewed your individual case.