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Human Chorionic Gonadotropin (HCG)

HCG Weight Loss Program
This diet program incorporates the use of the hormone HCG, and a low calorie diet (500 calories). HCG or Human Chorionic Gonadotropin is a naturally occurring protein produced by the mother’s placenta to help support the fetus during pregnancy. British physician Dr. ATW Simeons first explored HCG for weight loss, and published his works “Pounds and Inches” in 1954. In researching HCG during normal pregnancy, Dr. Simeons postulated that the HCG hormone helped to mobilize “abnormal fat” into the circulation and if combined with a low restricted diet, patients could actually cure obesity. He treated thousands of patients in the hospital and had patients lose weight effectively and safely.
Rejuvé has adopted this research by Dr. ATW Simeons and others to provide you with another option to losing weight. The program first involves a comprehensive medical history and examination. This allows Dr. Tang to evaluate whether you are a candidate for this program. Depending on how much weight you want to lose, you will be enrolled in either the 3 or 6 week program. Once all these factors are considered and the decision is made for you to proceed with the program, you will be closely supervised each step of the way. Each program includes:

  • Overview of program
  • HCG diet instruction
  • One-on-one instruction on how to inject HCG
  • HCG
  • HCG supplies
  • Vitamins
  • Vitamin injections
  • Follow-up visits


Frequently Asked Questions

What is HCG?
Human Chorionic Gonadotropin is a naturally occurring glycoprotein produced by the mother’s placenta to help support the fetus during pregnancy.
How does HCG work for weight loss?
Is it postulated that HCG acts on the hypothalamus to stimulate the mobilization of abnormal fat in the circulation. During a very low calorie diet, your body will latch on to this energy source for its daily needs. Taking HCG allows your body to burn up to 1,500-4,000 calories a day from this stored abnormal fat. When your body is using this stored fat, it will also use the stored vitamins and minerals. The end result is that you won’t feel hungry or run down, but instead feel good and have more energy.
How is HCG given?
There are many different forms including oral HGC drops, sublingual (under the tongue), and injectable. The form that works best in this program is the method injected right below the skin. This method is best because it allows for the best absorption of the medication into the body. At Rejuvé, all patients are instructed on how to inject themselves by our friendly staff.
Do the injections hurt?
Believe it or not, they do not hurt. Because the injections are done just below the skin using ultra thin needles, you can barely feel the needle.
Wouldn’t you lose the weight with just the low calorie diet?
Yes, you would lose weight, but you wouldn’t be able to survive on the 500 calorie diet for long. This is an extremely restricted amount of calories. You will become very hungry and lethargic. Remember, that HCG allows you to unlock the stored energy in your abnormal fat which it will use for its daily purposes. When a person tries to reduce calories to lose weight, they will first burn their normal reserved fat. Once those fat stores are all used up, the body will burn the structural fat, muscle, and water. Only as a last resort will the body let go its abnormal fat reserve. This is the common yo-yo cycle people fall into when dieting, and its reason they can never keep the weight off. Remember, the HCG encourages losing weight from fat and not from muscle.
Should I be concerned about going on 500 kcal HCG diet? Is it dangerous?
According to Dr. ATW Simeons and others, this restricted 500 kcal diet is safe when done in conjunction with the HCG injections. Although following a diet with such a small amount of calories would normally be considered unhealthy, it is safe to do while also receiving HCG injections. This is because HCG mobilizes abnormal fat and helps prevent the loss of muscle mass. It helps patients retain a high level of energy by consuming the abnormal fat while suppressing your appetite. Therefore, while it generally would not be considered safe to follow a diet with so few calories (like a liquid diet), when used in conjunction with HCG, it is both safe and effective as a weight loss program.
What happens if I do not follow the HCG diet?
If you are going to use HCG to help you lose weight, it is important that you follow the diet protocol closely and properly. In this way, you will have the greatest amount of success with our weight loss program while also keeping yourself safe and your body healthy.
Can I exercise while on the program?
Generally, we do not recommend exercise while you are actively being treated. The plan does not provide enough calories to do so. Once in a while, Dr. Tang will recommend some light exercise if your weight loss is stalled, but you must consult with Dr. Tang before exercising. When you complete with the program, you can resume all normal activities.
When I finish the HCG program, won’t I gain my weight right back?
No, you won’t gain it back. The HCG somehow reprograms your hypothalamus to reset at a new weight equilibrium so that you don’t experience this yo-yo effect.
How much weight can someone lose on the program?
Women can lose 5-15 lbs or 1 inch on a 3 week program, and 15-25 lbs or 2 inches on a 6 week program. Men can lose 15-25 lbs or 2 inches on a 3 week program and 25-50 lbs on a 6 week program.
Where will I lose the weight?
The weight loss will be focused mainly on the abdomen and hips, helping you reduce stubborn belly fat without having to turn to liposuction or a tummy tuck. If you are looking to reduce fat deposits around your abdomen, Rejuvé offers several noninvasive procedures including smart lipo and laser lipo which will can give you a similar result to lipo or a tummy tuck but without having to undergo surgery or pay the full liposuction cost or tummy tuck cost.
Who cannot have HCG?
Patients who have the following disorders should not have HCG:

  • a thyroid or adrenal gland disorder
  • an ovarian cyst
  • premature puberty
  • cancer or a tumor of the breast, ovary, uterus, prostate, hypothalamus, or pituitary gland
  • undiagnosed uterine bleeding
  • heart disease
  • kidney disease
  • epilepsy
  • migraines
  • asthma

What are some of side effects of HCG?
Side effects can include the following. If you are on the HGC diet and experiencing side effects, please contact Rejuvé. In the case of a serious side effect, you should seek medical attention right away.

  • constipation
  • headache
  • feeling restless or irritable
  • mild swelling or water weight gain
  • depression
  • breast tenderness or swelling
  • pain, swelling, bruising, or irritation at the injection site
  • An allergic reaction (difficulty breathing; closing of the throat; swelling of the lips, tongue, or face; or hives)
  • Pain, warmth, redness, swelling which may indicate a skin infection at the injection site
  • Pain, warmth, redness, numbness, or tingling in an arm or leg (which may indicate a blood clot)
  • Gout attack
  • Hair loss (reversible)

Is HCG FDA approved?
HCG is FDA approved to help women who have infertility become pregnant. It is also FDA approved for teenage boys who have undescended testes.
Unfortunately, the FDA still has not approved HCG for weight loss. As with many alternative forms of treatment, the FDA has not been able to find enough substantial evidence through its research to indicate that HCG is effective as a weight loss aid. On the other hand, thousands of people have used HCG and have successfully lost weight.
How successful is the HCG diet?
In our clinic, 90% of the patients who follow the diet correctly lose the target amount of weight.
When finishing the HCG program, do I go back to my regular diet?
No. You will be required to complete a maintenance diet which will last at least 6 weeks. This will ensure that you lock in the weight loss achieved during the HCG portion of the program. The maintenance diet is much less restrictive than the HGC diet, but prohibits any carbohydrates or sugars. The maintenance diet allows for approximately 1,200-1,500 calories per day. More specific guidelines will be provided to you in the clinic when you reach that stage.
What diet is recommended after completing the maintenance phase?
Dr. Tang will recommend a more specific long-term diet that considers an individual patient’s medical conditions, goals, and activities. This is discussed as part of the overall HCG program. In addition, Dr. Tang’s philosophy emphasizes optimizing wellness which focuses on healthy lifestyles, a well-balanced diet, hormone optimization, and nutritional supplements to help ensure that you keep the weight off.
Can I do more than one round of HCG?
Yes. Once you complete the maintenance diet you can do another round of HGC. In fact, in our clinic about 50% of the patients choose to do a second round to lose additional weight.

Dear Dr. Tang and the Beautiful Ladies of Rejuve,
Mahalo! (Gratitude, praise)
I write to you today from the beautiful island of Maui, 30 lbs lighter and exponentially happier and confident in life — marriage, work, play and everything in between.
I wish we would have met years ago; I could have avoided many other unsuccessful programs and enjoyed life at my natural weight. Besides your diet being the only one that has been successful; my weight has stayed the same after numerous holiday feasts, parties and even the recent Hawaiian luaus.
One of the most attractive features of your diet is that I was able to lose the weight in only 6 weeks!
In addition to looking and feeling better (emotionally & physically) I feel as though others around me (including my family, my wife and myself) exhibit more respect. Now when I look at myself in photographs I no longer feel disappointed, discouraged or even disgusted about my weight; I am happy and confident:)
Thanks again for all you have done for me. I have NEVER had a doctor who is as caring or geniune as you; I hope to someday return the professional courtesy.


I love Rejuve. I have tried many of the services they have to offer and my favorite one of all is the HCG diet. I’ve tried many weight loss programs and this one by far is the best one yet. When learning about the diet everyone thought i was crazy but in reality when can you ever lose 30 pounds in 6 weeks and your happy not grumpy. i’ve been off the diet for 2 weeks and i’m still losing weight and feeling great. I recommend Rejuve and this diet to everyone that wants to lose weight and keep it off. – Angelique


Dr. Tang featured on Channel 2 KTVU News

Dr. Tang on Channel 2 KTVU


A Weighty Issue – The HCG Diet – NBC Bay Area


HCG Intro


Dr. Dennis Clark discusses the HCG Diet


HCG Diet – What Foods Can I Eat on the HCG Protocol?


Mike and Juliet Talk Show

*Individual results will vary and these results may not occur in all patients.