Losing weight is a very personal thing. Every person’s body is different. What is the best way to achieve this goal? What would work better for you: a diet program, diet pills, or natural weight loss supplements? The answers to these questions are not easy to find. It’s up to each individual to decide what works best for them. Personally, I  prefer weight loss supplements. I believe taking something natural that can support your body and help it to function at it’s best possible level is better than diet pills that can cause unwanted side effects. That brings us to an important question: what are the best natural weight loss supplements? Do they have side effects?


What are the best natural weight loss supplements?

After some research, here are the most commonly listed natural weight loss supplements that have been shown to produce results. Check out even more information about any of these products here.

Garcinia Cambogia

How does it work? Garcinia Cambogia hinders fat producing enzymes in the body. It also increases levels of serotonin, which helps to curb your appetite. It was recommended on the Dr. Oz show back in 2012.

Side effects: Garcinia Cambogia has been known to cause nausea, digestive tract discomfort and headache in some cases.

Reviews: On Web MD, it received a 2 star rating for effectiveness, 3.5 stars for ease of use, and 2 stars for satisfaction out of 1058 user reviews.



How does it work? Having been around for over a decade, it is one of the most popular weight loss supplements in the world. Hydroxycut has several components that help with weight loss. Included are caffeine and several plant extracts.Hydroxycut also includes papaya, maqui, blackberry, amla extract and saffron extract.

Side effects: In 2009, Hydroxycut was recalled by its creater when the FDA received reports of liver problems, seizures, and rhabdomyolysis, a muscle damaging condition. Hydroxycut no longer contains the ingredients that caused these conditions, mainly ephedra. However, since 2009, there have still been some reports of similar problems related to Hydroxycut.

Reviews: No reviews or ratings were available on WebMD. On Amazon, Hydroxycut received an average of 3.9 stars out of 5 from 3,235 reviews.



How does it work? Caffeine is a commonly known metabolism booster. Quite often, it is used in commercial weight loss supplements.

Side effects: Caffeine has been shown to be safe for adults when used appropriately, with appropriate levels. When taken for a long time or in high doses, it can cause insomina, nervousness and restlesness, stomach irriation, nausea and vomiting, increased heart rate and respiration.

Reviews: Of the 4 reviews for weight loss, caffeine received 2.5 stars for effectiveness, 3.5 stars for ease of use, and 2 stars for satisfaction on WebMD.


Orlistat (Alli)

How does it work? Orlistat has various names. Alli if sold over the counter and Xenical if sold as a prescription. It hinders the breakdown of fat in your gut, thus causing you to take in less calories from fat.

Side effects: The most common side effects of Alli are loose stools and other bowel movement changes. These effects usually materialize in the first few weeks, and then go away. However, they may continue. You should tell your doctor if you experience bowel related symptoms that become severe and won’t go away.  You should call 911 or your doctor immediately if you experience difficulty breathing or swallowing, hives, itching, or stomach pain. In some cases, mostly those taking prescription-strength dose (Xenical), Alli has been linked to severe liver injury. Stop taking Alli and call your doctor if you experience symptoms of liver injury. THedark urine, fatigue, fever, light colored stools, loss of appetite, severe/persistent itching, weakness, vomiting, and jaundice (yellowing of the skin or eyes).

Reviews: On WebMD, Alli received 4 stars for effectiveness, 4.5 stars for ease of use and 4 stars for satisfaction out of 42 reviews.


Raspberry Ketones

How does it work? Raspberry Ketones, which is substance found in raspberries that is responsible for their distinct smell, works in 2 ways: it increases the breakdown of fat in the body and increases levels of adiponectin, a hormone that is believed to be related to weight loss.

Side effects: Raspberry ketones have been shown to possibly be safe when taken taken short term as part of a product that contains other ingredients, such as Prograde Metabolism. This supplement contains caffeine as well as Raspberry Ketones, and has been used safely twice daily for 8 weeks. There aren’t enough studies to know if Raspberry Ketones on their own are safe for use. Raspberry Ketones are chemically related to synephrine, a stimulant. Because it this, Raspberry Ketones could cause jitteriness, increase blood pressure or rapid heart beat.

Reviews: Out of 43 reviews for weight loss on WebMD, it received 3 stars for effectiveness, 4 stars for ease of use, and 2.5 stars for satisfaction.


Green Coffee Bean Extract

How does it work: The caffeine in green coffent bean extract increases fat burning.It also contains chlorogenic acid, which decrease the breakdown help to slow the breakdown of carbohydrates in your gut.

Side effects: Green Coffee has been used safely for up to 12 weeks when taken at doses of up to 480mg daily. Green Coffee does contain caffeine, similar to regular coffee. Therefore, it can cause caffeine related side effects that are similar to coffee, such as insomnia, nervousness and restlessness, stomach upset, nausea and vomiting, increased heart and breathing rate, headache, anxiety, agitation, ringing in the ears, and irregular heartbeats.

Reviews: Out of 163 reviews for weight loss on WebMD, Green Coffee received 2 stars for effectiveness, 4 stars for ease of use, and 2 stars for satisfaction.



How does it work? Glucomannan is a fiber that can be found in the roots of the elephant yam. It is also called “konjac”. It sits in your belly and absorbs water, causing it to become gel-like. This promotes a feeling of fullness, and assits you in consuming less calories.

Side effects: Glucomannan has been shown to be safe for adults and children when consumed as a food in a powder or capsule form for up to 4 months in medicinal amounts. Solid Glucomannan tablets have been shown to be unsafe for adults and children and have been linked to blockages of the throat or intestines in some cases.

Reviews: On WebMD, Glucomannan received 3.5 stars for effectiveness and 4 stars for both ease of use and satisfaction based on 17 reviews for weight loss only.



How does it work? This supplement is relatively new. It works by combining 2 plant extracts that help to change the metabolism of fat cells. Meratrim makes it harder for fat cells to multiply, decreases the amount of fat that they pick up from the blood stream, and helps fat cells to burn stored fat.

Side effects: Clinical studies that were conducted on Meratrim showed no side effects. One of its ingredients, garcinia mangostana, Has been known to slow down blood clotting, If you have a blood disease or are about to have surgery, it is not recommended to take Meratrim. The recommended dose is 800mg/day. Side effects may occur if you go over the recommended dose.

Reviews: The Consumer Health Digest gives Meratrim a 2.6 out of 5 stars. No information on Meratrim was available on WebMD.


Green Tea Extract

How does it work? Green Tea Extract is a very popular supplement that can be found in numerous weight loss supplements. It is thought to increase a hormone that helps you burn fat, called norepinephrine.

Side effects: Green Tea has been found to be safe in adults when taken as a drink in moderate amounts, applied to the skin as an ointment, or used as a mouthwash in the short term. It has been shown to be safe to use for up to 2 years. It has caused upset stomach and constipation in some people. In rare cases, it has been linked to liver problems. When taken long term or in high doses, it has been shown to cause the same side effects as caffeine. Drinking very high doses of green tea, which is estimated to be 10-14 grams, can be fatal. Lower doses can cause serious toxicity.

Reviews: Out of 13 reviews for weight loss on WebMD, Green Tea Extract received 3 stars for effectivness and satisfaction and 4 stars for ease of use.


Conjugated Linoleic Acid (CLA)

How does it work? CLA is a popular fat loss supplement that came on the market many years ago. It helps to reduce appetite, boost metabolism, and energize the breakdown of body fat. It is considered a healthier trans fat, and can be found naturally in some fatty animals foods such as cheese and butter.

Side effects: CLA has been shown to be safe for adults when taken by mouth in amounts typically found in foods. It is also possibly safe to be taken in medicinal amounts that are larger than those typically found in food. It may cause upset stomach, diarrhea, nausea or fatigue. CLA is possibly safe for children when taken in medicinal amounts for up to 7 months. There is not enough evidence to know if long term use is safe for adults or children. CLA has also been shown to be safe for pregnant or nursing mothers when taken by mouth in amounts typically found in food. There is not enough evidence to know if medicinal amounts of CLA are safe if you are pregnant or nursing.

Reviews: Out of 31 reviews on WebMD for weight loss, CLA received 3 stars for effectiveness and satisfaction and 4 stars for ease of use.



How does it work? It is extraced from a plant in the mint family that professes to be effective for losing weight. It is thought to raise levels of cAMP, a compound found inside cells, thus stiumlating fat burning.

Side effects: Forskolin has not been studies thoroughly enough to know for sure if it is safe to consume. There have been some negative reactions linked to Forskolin: flushing, fast heart beat, low blood pressure, upper respiratory tract irritation, coughing, tremors, restlessness, stinging of the eyes, enlargement of blood vessels in the eyes and headache.

Reviews: No reviews for Forskolin were available on WebMd. On Amazon, it received an average of 3.4 stars out of 5 based on 1,291 reviews.


Bitter Orange or Synephrine

How does it work? This is a type of orange that contains synephrine. Synephrine is related to ephedrine, which has been banned by the FDA because of serious side effects. Although synephrine is similar to ephedrine, it is less potent. It has the ability to significantly reduce your appetite and significantly increase fat burning.

Side effects: Bitter orange has been found to likely be safe for adults and children if it is taken in the amounts typically found in food. Bitter Orange essential oil has also been found to possibly be safe when applied to the skin or used as aromatherapy. However, bitter orange is likely unsafe when taken as a supplement for a medical purpose. When taken with stimulants such as caffeine or herbs that contain caffeine, it increases the risk for high blood pressure, fainting, heart attack, stroke, and other grave side effects. It can also trigger headaches, including migranes. It can also cause sensitivity to the sun.

Reviews: Based on 4 reviews on WebMD for weight loss only, bitter orange received 2 stars for effectiveness and satisfaction and 2.5 stars for ease of use.



After careful research, it is shown that even the best natural weight loss supplements can have side effects. It is important to study these carefully to determine which of the above supplements would be best for you. Consult your doctor with any questions or concerns.

For more information on any of these supplements, or to order, please visit my product page.

If I missed anything you would like to see added to this list or have any remarks, please leave me a comment below. I look forward to hearing your feedback! Thanks for reading!

  1. Great article and well researched. People really do need to read and understand labels, but the writing is so tiny these days that you need to take a magnifying glasses with you while shopping. I wear glasses but I still put products back on the shelf because I cannot read the content labels. It is so frustrating.

    Keep up the great work.

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