Weight Loss Clinic | Weight Loss Injections Los Angeles

Weight Loss Injections Los Angeles | Semaglutide & Tirzepatide

Physician-Guided Medical Weight Loss

Weight Loss Injections Los Angeles

Personalized medical weight loss with physician oversight, ongoing monitoring, nutrition guidance and treatment plans tailored to your health and goals.

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Weight loss injections and physician-guided medical weight loss in Los Angeles

Physician-Guided Medical Weight Loss in Los Angeles

Achieving meaningful, sustainable weight loss often requires more than dieting alone. At Weight Loss Clinic Los Angeles, patients receive physician-guided medical weight loss care designed around their health history, body composition, metabolic health, goals, and individual response to treatment.

Our medical weight loss programs may include prescription weight loss injections such as semaglutide or tirzepatide when clinically appropriate, along with nutrition guidance, body-composition monitoring, laboratory evaluation, lifestyle recommendations, supplements, and ongoing physician management.

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Weight Loss Injections Available in Los Angeles

Modern weight loss medications can help eligible patients reduce appetite, improve satiety, and support meaningful weight reduction when combined with appropriate medical supervision and lifestyle changes.

Semaglutide

Semaglutide is a GLP-1 receptor agonist that may help eligible patients reduce hunger, feel full sooner, and consume fewer calories.

Our physician-guided semaglutide program includes individualized medical evaluation, dosing recommendations when appropriate, progress monitoring, and ongoing management.

Semaglutide Weight Loss Program: $300/month

Learn About Semaglutide


Tirzepatide

Tirzepatide acts on both GIP and GLP-1 pathways and may produce significant weight loss in appropriate patients.

Treatment is individualized based on medical history, treatment response, tolerability, laboratory findings, and weight-loss goals.

Tirzepatide Weight Loss Program: $499/month

Learn About Tirzepatide


Emerging Weight-Loss Therapy

Retatrutide: What Los Angeles Patients Should Know

Retatrutide is an investigational once-weekly triple agonist that targets GIP, GLP-1 and glucagon receptors. It is being developed by Eli Lilly for obesity and related cardiometabolic conditions. Unlike semaglutide, which primarily targets GLP-1, and tirzepatide, which targets GIP and GLP-1, retatrutide is designed to act on three metabolic pathways.

Phase 3 studies reported substantial average weight reduction in adults with obesity, but retatrutide is not currently FDA-approved and is not offered by our clinic outside an authorized clinical trial. We do not recommend purchasing products marketed online as retatrutide because their identity, purity, dosing and safety cannot be verified.

How Retatrutide Differs From Semaglutide and Tirzepatide

  • Semaglutide: GLP-1 receptor agonist.
  • Tirzepatide: dual GIP and GLP-1 receptor agonist.
  • Retatrutide: investigational triple GIP, GLP-1 and glucagon receptor agonist.

Our physician can discuss currently approved weight-management options, review whether GLP-1 or dual-agonist treatment may be appropriate for you, and help you understand emerging therapies as new evidence and regulatory decisions become available.

Discuss Your Weight-Loss Options

Medical content reviewed against current manufacturer and clinical-trial information. Retatrutide remains investigational as of September 2026.

More Than Just Weight Loss Injections

Successful medical weight loss should address the person—not simply prescribe medication.

Our approach may include:

  • Comprehensive physician evaluation
  • Medical and weight history review
  • Body-composition assessment
  • Laboratory testing when indicated
  • Evaluation of metabolic and hormonal factors
  • Personalized nutrition recommendations
  • Exercise and lifestyle guidance
  • Prescription weight loss medications when appropriate
  • Peptide and metabolic-health consultation when appropriate
  • Supplement recommendations
  • Ongoing physician monitoring
  • Dose adjustments based on response and tolerability
  • Strategies to help maintain weight loss

Dr. David Nazarian, board-certified internal medicine physician in Los Angeles

Experienced Medical Oversight

A Physician-Led Approach to Weight Loss

Care is guided by Dr. David Nazarian, a board-certified internal medicine physician, with treatment individualized to each patient’s medical history, metabolic health, medications, goals and response to therapy.

Weight loss medications have become widely available, but appropriate patient selection, dosing, monitoring, and long-term planning remain important.

Our programs are overseen by an experienced board-certified internal medicine physician with extensive experience in medical weight management, metabolic health, medications, supplements, and individualized patient care.

Rather than using a one-size-fits-all protocol, treatment recommendations are based on your overall health, medications, medical history, previous weight-loss attempts, laboratory findings, body composition, and goals.


Who May Be a Candidate for Weight Loss Injections?

Weight loss medications may be considered for adults who have overweight or obesity and meet appropriate clinical criteria.

During your consultation, we review factors including:

  • Current weight and BMI
  • Medical history
  • Cardiovascular risk factors
  • Diabetes or insulin resistance
  • Blood pressure
  • Cholesterol
  • Previous weight-loss attempts
  • Current medications
  • Family history
  • Gastrointestinal conditions
  • Thyroid history
  • Personal weight-loss goals

Not every medication is appropriate for every patient. Treatment recommendations are made following medical evaluation.


What Happens During Your Initial Evaluation?

Your first visit is designed to identify factors that may be contributing to difficulty losing weight and determine which treatment options may be appropriate.

1. Comprehensive Medical Review

We review your health history, previous weight-loss efforts, medications, dietary habits, exercise patterns, sleep, stress, and weight-related concerns.

2. Body Composition and Weight Assessment

Weight alone does not tell the entire story. Body composition may help evaluate changes in body fat and lean mass during treatment.

3. Laboratory Testing

Depending on your history, laboratory testing may be recommended to evaluate metabolic or hormonal factors that can affect weight.

4. Individualized Treatment Plan

Your physician develops a personalized program that may include medication, nutrition strategies, activity recommendations, supplements, and other supportive therapies.

5. Ongoing Monitoring

Treatment is adjusted based on weight loss, appetite, side effects, laboratory findings, body composition, and overall health.


Why Medical Supervision Matters

Weight loss medications can be highly effective for appropriately selected patients, but medical supervision provides several important advantages.

We monitor:

  • Medication effectiveness
  • Gastrointestinal side effects
  • Appropriate dose escalation
  • Hydration and nutrition
  • Protein intake
  • Lean-muscle preservation
  • Laboratory abnormalities when relevant
  • Medication interactions
  • Changes in existing medical conditions
  • Long-term weight-maintenance strategies

Our goal is not simply rapid weight loss. The goal is healthier, sustainable weight management.


Preserving Muscle During Weight Loss

Weight loss can involve loss of both fat and lean body mass.

Our programs emphasize strategies designed to support muscle preservation, including adequate protein intake, resistance exercise when medically appropriate, nutritional guidance, and body-composition monitoring.

Maintaining lean mass can be particularly important for metabolic health and long-term weight maintenance.


Personalized nutrition guidance for medical weight loss patients in Los Angeles

Personalized Nutrition and Lifestyle Guidance

Medication works best when combined with sustainable behavioral changes.

We help patients develop practical strategies around:

  • Protein intake
  • Meal composition
  • Portion size
  • Hydration
  • Fiber intake
  • Resistance exercise
  • Cardiovascular activity
  • Sleep
  • Stress management
  • Long-term maintenance

The objective is to create habits that can continue even as medication doses change or treatment eventually stops.


Weight Loss Injection Pricing

Semaglutide

$300 per month

Tirzepatide

$499 per month

Medication treatment requires an initial comprehensive medical evaluation. Additional laboratory testing or other services may be recommended depending on the individual patient’s health history and treatment plan.

Pricing and medication availability may change. Treatment requires medical eligibility.

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Frequently Asked Questions

What are the most common weight loss injections?

GLP-1-based medications are among the most commonly used prescription treatments for medical weight management. Semaglutide and tirzepatide are two medications frequently discussed with eligible patients.

How much weight can I lose with weight loss injections?

Weight-loss response varies considerably from person to person and depends on the medication, dose, treatment duration, nutrition, activity, medical conditions, and individual biology. Your physician can discuss realistic expectations based on your individual situation.

Which is better, semaglutide or tirzepatide?

There is no single medication that is best for everyone. Tirzepatide and semaglutide work somewhat differently, and treatment selection should consider medical history, previous treatment, goals, tolerability, contraindications, and other clinical factors.

Is retatrutide available for weight loss in Los Angeles?

No. Retatrutide remains an investigational medication and is not currently FDA-approved. It should only be used within an authorized clinical trial. Patients interested in newer weight-management therapies can schedule a physician consultation to discuss currently approved options and emerging treatments as evidence and regulatory guidance evolve.

How quickly do weight loss injections work?

Many patients notice appetite changes relatively early during treatment, while meaningful weight reduction typically develops over time. Medications are generally started at lower doses and adjusted gradually when appropriate.

Do I need laboratory testing?

Laboratory testing may be recommended depending on your medical history, medications, symptoms, and risk factors.

Will I regain weight if I stop the medication?

Weight regain can occur after discontinuing weight-loss medication. Long-term nutrition, activity, muscle preservation, behavioral changes, and an individualized maintenance strategy are therefore important parts of treatment.

Are weight loss injections safe?

Prescription weight-loss medications have potential benefits, contraindications, side effects, and risks. They should be used only when medically appropriate and under the guidance of a qualified healthcare professional.

Do you treat patients from Beverly Hills and West Hollywood?

Yes. Our Los Angeles practice serves patients from throughout the greater Los Angeles area, including Beverly Hills, West Hollywood, Hollywood, Century City, and surrounding communities.


Start Your Medical Weight Loss Program

If you are interested in semaglutide, tirzepatide, or other physician-guided approaches to weight management, schedule a comprehensive consultation.

We will evaluate your medical history, goals, body composition, metabolic health, previous treatments, and appropriate options before developing an individualized treatment plan.

Weight Loss Clinic Los Angeles

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Written by

David Nazarian, MD

Board-Certified Internal Medicine Physician with extensive training in obesity medicine and medical weight management. Dr. Nazarian uses an evidence-based, integrative 360° approach that considers metabolic health, hormone and vitamin deficiencies, sleep, nutrition, lifestyle, medications and other medical factors that may affect weight. His care emphasizes individualized evaluation, clear communication, safety, ongoing follow-up and long-term success.

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Medically reviewed by

David Nazarian, MD

Reviewed for clinical accuracy and patient-safety context.

Last medically reviewed: September 12, 2026

Patient Experience

What Patients Say About Dr. Nazarian

Individual experiences vary. Testimonials reflect the experiences of the patients quoted and do not guarantee outcomes.

★★★★★

“Dr. Nazarian and his staff are so knowledgeable and friendly. I am finally losing weight! I feel amazing and I’m getting a lot of compliments.”

Andrea Albright — Google review
★★★★★

“Dr. Nazarian and his team have made me feel heard and understood as I navigate and try to reach my weight loss goals… His medical weight loss plans feel tailored to each individual.”

A Casey — Google review
★★★★★

“I really enjoy coming to see Dr. Nazarian in Beverly Hills for weight loss options… He asked questions about my goals and eating habits… I left feeling optimistic.”

Lizzette L. Schneider — Google review