Medical Weight Loss

Conveniently located to serve the areas of Los Gatos, Danville and San Jose

Medical Weight Loss, Swan Medical, Peter Castillo, Lot Gatos, CA

Medical Weight Loss offers clinical intervention for patients who are trying to lose weight, but may not be reaching their goals with diet and exercise alone. At Swan Medical, we offer customized packages for those struggling with weight loss that include treatments focused on sleep, digestion, muscle mass, and fat burning. If you are searching for solutions to regulate your weight through safe and healthy means, we are more than happy to help you through this process.

Dr. Peter Castillo and Nurse Practitioner, Remy Paille provide excellent care and comprehensive medical assistance for each of their patients. At Swan Medical in Los Gatos, we have curated specialized medical weight loss and body composition programs fit for any type of patient. To schedule your consultation with us, please call (925) 905-9922 or fill out this form today.

About Medical Weight Loss

Are you tired of trying fad diets and grueling exercise routines without seeing the results you desire? Swan Medical, led by Dr. Castillo, offers a comprehensive medical weight loss program that focuses on your individual needs, providing solutions that go beyond quick fixes.

At Swan Medical, we understand that weight loss is not just about shedding pounds; it’s about achieving sustainable results while improving your overall health and well-being. Our approach combines medical expertise, personalized guidance, and cutting-edge techniques to help you reach your weight loss goals effectively.

Our medical weight loss packages include:

  • Evolt 360 Body Scan
  • Semaglutide Treatments
  • Personalized  Supplements

With this combination of treatments, we can easily and effectively personalize your treatments and closely monitor your progress. In order to stay in good health and meet individual weight loss goals, these packages are customized for each patient and their needs. 

Evolt 360 Body Scan

To determine your personal course of action, we perform an Evolt 360 Body Scan for each patient. This device analyzes your overall health and wellness, including your fat and muscle mass, body circumference, fitness score, and much more. We use this data to determine the best course of action to get your weight back on track.

This state-of-the-art device uses electrical pulses to map out your body in digital form for medical evaluation. The scan of your personalized health information can be viewed on the Evolt 360 Active app. It makes it simple to track your consumption of calories, exercise routine, and even provides you with supplement suggestions. It is non-invasive and easily repeatable for those who require routine body scans to keep a detailed record of their progress. Evolt 360 body scans are a great resource for patients while they work to improve their body composition. 

Semaglutide Treatments

An important part of weight loss is restricting caloric intake when it is above what is required for optimal health and function. Semaglutide is a medication initially intended for diabetes treatment, that can also be used for weight loss. It works by decreasing a patient’s appetite, impacting calorie intake and allowing the body to better utilize macro and micronutrients. 

Semaglutide belongs to a class of medications known as GLP-1 receptor agonists. It works by mimicking the effects of a hormone called glucagon-like peptide-1 (GLP-1) in the body. GLP-1 helps regulate blood sugar levels by stimulating insulin secretion, reducing glucagon release, slowing down digestion, and promoting satiety.

Taken by injection or orally, Semaglutide can have a drastic effect on the amount of weight a patient loses over time. (1) Starting with small doses to allow the body to adjust to the medication, when paired with dietary changes and exercise, one can expect to lose 1.5-2 pounds per week. This therapy combines superbly with BHRT therapy to maintain muscle mass to promote sustained weight loss. 

Personalized Supplements

There are eight primary supplements that we provide and promote for our weight loss patients depending on needs. They fit into the following categories:

  • Muscle Mass Preservation
  • Fat Burning
  • Digestion and Gut Health Aids
  • Sleep Aid

To Preserve Muscle Mass

To help you preserve muscle mass while in a caloric deficit, we prescribe MyoStim and Amino Acid Synergy supplements. 

MyoStim is considered a complete suite of nutrients that promotes tissue preservation and healthy aging. MyoStim combines clinically useful amounts of collagen peptides, L-leucine, β-hydroxy β-methylbutyrate (HMB), geranylgeraniol (GG), and vitamin D3 to help mitigate the effects of age-related muscle loss and support lean body composition.This supplement is usually consumed after dissolving it in water.

Amino Acid Synergy is a supplement that helps regulate your amino acid content when your diet lacks essential protein.Recommended for athletes and those on a reduced calorie diet who need amino acids to create and maintain lean muscle mass. This treatment helps with skeletal muscle support, essential for a healthy lifestyle.

To Burn Fat

To aid in your body’s natural fat-burning abilities, we recommend three types of supplements:

  • Thermo-EFx: Supports thermogenesis and healthy body weight management. It contains bitter orange extract which supports basal metabolic rate. 
  • Carnitine Synergy: Helps the body use fat storage as an energy source(2)
  • EndoTrim: Balances the endocrine system by focusing on insulin, leptin, and cortisol functioning to support metabolism. Uses Coleus forskohlii, Garcinia cambogia, and epigallocatechin gallate (EGCg) to help maintain lean body mass. (3)

It is especially important to keep track of your body’s normal functioning while it goes through changes like rapid weight loss. Supportive supplements like the ones stated will take some of the guessing out of whether or not your body is working toward burning fat and building muscle. 

Digestion and Gut Health Aids

Some weight loss regimens can interfere with proper functioning of our digestive system leading to constipation or loose stools. Many people find keeping track of your fiber intake can be difficult while in a caloric deficit, so we prescribe PaleoFiber for many of our weight loss patients needing extra help in this area. This supplement helps support your gastrointestinal (GI) health by providing healthy prebiotics to facilitate the growth of good bacteria which can also help support optimal blood sugar metabolism, and normal appetite.

Good digestion is a very important part of monitoring your health. We also commonly prescribe Digestzymes to help with this process. The formulation of this supplement blends digestive enzymes to help you digest proteins, carbohydrates, and fats. This can be especially important after digestive organ surgeries such as gall bladder removals or extensive use of antibiotics. 

Sleep Aid

Destress/Rest is formulated specifically to prompt uninterrupted sleep with its blend of proven  ingredientsthat help you maintain your serotonin and reduce your stress levels naturally and efficiently.Regulating stress can help immensely with supporting weight loss. 

Liposomal Neurocalm is a fast acting liquid that absorbs much more quickly than a capsule, making it ideal to use during unwanted nighttime awakenings. It’s comprised of gamma‑aminobutyric acid (GABA) and L‑theanine, both of which promote a healthy response to stress and restlessness that contribute to intermittent nighttime awakenings . GABA supports normal nerve cell activity, and the amino acid L-theanine causes a sense of calm and relaxation without being sedating, making it appropriate to combat daytime stressors as well. 

How Can I Benefit From Medical Weight Loss?

As opposed to following a strict diet, or unattainable workout routine, medical weight loss is a healthy and monitored way for patients to lose weight safely under professional supervision. Dr. Castillo and Nurse Practitioner Remy Paille help you stay the course in many supportive ways to make the process easier. 

Some benefits of undergoing medical weight loss include:

  • Customized program
  • Safe and effective
  • Improved quality of life
  • Provides accountability and support
  • Builds healthy eating and exercise habits
  • Losing extra weight reduces certain medical risks

Joining a medical weight loss program also offers our patients comprehensive primary care. The decision to lose weight is only the first step toward being healthier, and we will support you throughout the entire process. 

In order to see the best results, a combination of medication and lifestyle changes is usually most effective for patients trying to lose weight. Your customized program with Swam Medical will incorporate both methods to ensure you are participating in the most beneficial and healthiest plan possible.

Ideal Candidates

Good candidates for medical weight loss are experiencing symptoms from being overweight.

You may qualify if you have any of the following:

  • Hypertension
  • Type 2 Diabetes
  • High cholesterol
  • A BMI greater than 27
  • Previously undergone weight loss surgery

If you are someone who has tried many other methods to lose weight that have not worked, a personalized medical weight loss program could be a great solution.

Personal Consultation

Your private consultation at Swan Medical will determine if medical weight loss is right for you. We will ask you about your full medical history, the medications you are currently taking, and your weight loss journey so far. If you are a good candidate for medical intervention, we will draw up a detailed health plan for you to follow. Swan Medical examines your health and wellness to make sure we can provide the best quality care. 

To learn more about medical weight loss and other services we provide to all of our patients, please give our blog a read. 

Results of Medical Weight Loss

The average medical weight loss patient usually loses 1.5-2  pounds per week while participating in their personalized program. The results of medical weight loss vary widely for each patient, so do not be discouraged if your progress looks different than someone else’s. Since each program is precisely made for individual patients and their needs, it can sometimes be unpredictable. As long as you follow your plan carefully and safely, Dr. Castillo and Remy will work to ensure that you see results which have both a short and long term effect on your total health and wellness. 

How Much Does Medical Weight Loss Cost in Los Gatos?

Medical weight loss programs are extremely dependent on each patient’s specific situation. We will discuss your plan thoroughly with you during your private consultation. 

To schedule your appointment to discuss your medical weight loss program, please fill out a contact form. You may also call us at (925) 905-9922 to speak to us directly. 


How does Semaglutide work?

Semaglutide mimics the action of the natural GLP-1 hormone in the body, which helps regulate blood sugar levels. By activating the GLP-1 receptors, semaglutide increases insulin production, decreases glucagon secretion, slows down gastric emptying, and reduces appetite.

How long will it take to lose weight with weight loss medication?

Though it varies, many patients lose most of their weight in the first six months of taking medication. This can be easily influenced by your exercise routine, diet, and current health.

How long should I take weight loss medication?

Most FDA-approved weight loss medications are approved for long-term use. Because obesity and being overweight can be a chronic condition, you may be required to take the medication for anywhere from 6 months to multiple years in order to reach your goal in a healthy way.


  1. Christou GA, Katsiki N, Blundell J, Fruhbeck G, Kiortsis DN. Semaglutide as a promising antiobesity drug. Obesity Reviews. 2019;20(6):805-815. doi:
  2. Barrea L, Altieri B, Polese B, et al. Nutritionist and obesity: brief overview on efficacy, safety, and drug interactions of the main weight-loss dietary supplements. International Journal of Obesity Supplements. 2019;9(1):32-49. doi:
  3. Pathak NM, Millar PJB, Pathak V, Flatt PR, Gault VA. Beneficial metabolic effects of dietary epigallocatechin gallate alone and in combination with exendin-4 in high fat diabetic mice. Molecular and Cellular Endocrinology. 2018;460:200-208. doi: