We Asked 6 Dietitians to Share the Most Helpful Weight Loss Supplements for Women
In some cases, supplements, when combined with a healthy lifestyle, may help support your weight loss journey. However, finding options that are both safe and effective can be difficult. To find the best options on the market, we asked five registered dietitians to share the weight loss supplements they recommend for their women clients. These recommendations include fiber, probiotics, creatine, protein, herbal supplements, and more — but one thing they all have in common is that there’s evidence to support their safety and effectiveness for weight loss.
Our Top Picks for Weight Loss Supplements for Women
- Best creatine: Momentous Creatine
- Best protein powder: Orgain Organic Protein & Superfoods Plant Based Protein Powder
- Best omega-3: Nordic Naturals ProOmega
- Best berberine: Theralogix Berberine Enhanced Absorption Supplement
- Best prebiotic: Res Prebeet Energy Prebiotic
- Best fiber: Metamucil Multi-Health Fiber Powder
- Best green tea extract: Thorne Green Tea Phytosome
- Best probiotic: Codeage GLP-1 Probiotic+
- Best ready-to-drink protein: Premier Protein Shake
- Best budget friendly: NOW Foods Glucomannan Pure Powder
When to Consult Your Doctor?
Weight loss supplements aren't tightly regulated by the U.S. Food and Drug Administration (FDA), according to the Office of Dietary Supplements, so many on the market contain questionable ingredients or make unrealistic promises about weight loss.
One of the most common ingredients in weight loss supplements is caffeine. Caffeine is a natural metabolism booster, helping the body to burn more calories. However, it's also easy to overdo it on caffeine. Consuming more than 400 milligrams (mg) per day (the equivalent of about four cups of coffee) may cause unpleasant side effects like diarrhea, anxiety, and headaches. Additionally, caffeine and other stimulants commonly found in weight loss supplements, like bitter orange and yohimbe, may worsen heart problems by increasing blood pressure and heart rate.
None of the supplements on this list contain these ingredients because of their questionable safety profile. Regardless, it's extremely important to speak to your doctor before using any weight loss supplement, particularly if you have any preexisting medical conditions or are taking any prescription medications.
Additionally, if you need help creating a healthy, evidence-based weight loss plan, consider consulting a registered dietitian or an obesity medicine physician, a doctor who specializes in treating obesity through lifestyle, medical, or surgical options.

Best Creatine
Momentous Creatine
Pros
- Supports muscle mass and metabolism
- Vegan
- Third-party tested and NSF Certified for Sport
Cons
- More expensive than other creatine supplements
- Must be mixed into a beverage
Key Specs
- Key ingredients: Creatine monohydrate
- Supplement type: Powder
- Serving size: 1 scoop
- Third-party tested: Yes
- Price per serving: $0.44
Momentous Creatine is vegan and contains just one ingredient: creatine monohydrate. It's also NSF Certified for Sport, meaning it's free of substances that are banned from competitive sports by the U.S. Anti-Doping Agency (USADA). Momentous supplements are third-party tested to ensure quality and safety, and you can view test results for each product on the Momentous website. Momentous is a brand that I personally recommend because of its commitment to quality testing and transparency.
This creatine is roughly $0.44 per serving, which is more expensive than similar creatine supplements, but it’s vegan and I believe the quality and safety make it worth the extra expense. It's a powder supplement that should be mixed into a beverage. I take creatine regularly, and I find it mixes well into milk without affecting the taste or texture.

Best Protein Powder
Orgain Organic Protein & Superfoods Plant Based Protein Powder
Pros
- Contains protein for fullness and muscle mass
- Formulated with fiber for fullness and blood sugar control
- Organic, vegan, and soy-free
Cons
- Not third-party tested
- More expensive than other protein powders
Key Specs
- Key ingredients: Pea protein, brown rice protein, mung bean protein, chia seed
- Supplement type: Powder
- Serving size: 2 scoops
- Third-party tested: No
- Price per serving: $2.20
This product is vegan and free from lactose and artificial colors, flavors, sweeteners, and preservatives. It's available in Creamy Chocolate Fudge and Vanilla Bean, and only has 1 g of sugar. At over $2 per serving, it's more expensive than other protein powders. However, it is also completely organic and has the added benefit of containing a high dose of fiber. It can be mixed with 12 ounces of water or the milk of your choice. In my experience with protein powders, milk is a tastier option. Note that it is not third-party tested.

Best Omega-3
Nordic Naturals ProOmega
Pros
- May help reduce inflammation
- Third-party tested
- Provides over 1,000 milligrams of omega-3 fatty acids
Cons
- More expensive than other fish oils
- Not vegan-friendly
Key Specs
- Key ingredients: Fish oil
- Supplement type: Capsule
- Serving size: 2 softgels
- Third-party tested: Yes
- Price per serving: $1.01
It's lemon flavored to help mask the briny taste of fish oil. Also, it’s important to note that omega-3 fish oil supplements aren't vegan-friendly.

Best Berberine
Theralogix Berberine Enhanced Absorption Supplement
Pros
- May support modest weight loss
- Vegan-friendly
- Third-party tested
Cons
- May not result in noticeable changes
- Can cause digestive side effects
Key Specs
- Key ingredients: Berberine
- Supplement type: Capsule
- Serving size: 1 capsule
- Third-party tested: Yes
- Price per serving: $0.82

Best Prebiotic
Res Prebeet Energy Prebiotic
Pros
- Supports digestive health
- May help reduce appetite
- Vegan and third-party tested
Cons
- More expensive than other weight or gut health supplements
- Some may find it chalky or overly sweet
Key Specs
- Key ingredients: Resistant potato starch, beetroot powder, vitamin B12
- Supplement type: Powder
- Serving size: 1 scoop
- Third-party tested: Yes
- Price per serving: $1.30
Res Prebeet Energy Prebiotic is a drink mix that's designed to support digestive health, particularly in people taking GLP-1 medications. "I also recommend it as a helpful weight loss supplement," says Nicole Ibarra, RD, LD, owner of Altitude Nutrition & Fitness.

Best Fiber
Metamucil Multi-Health Fiber Powder
Pros
- Helps promote satiety
- Vegan friendly
- More affordable than other weight loss supplements
Cons
- Not third-party tested
- May cause digestive side effects
Key Specs
- Key ingredients: Psyllium husk
- Supplement type: Powder
- Serving size: 2 tbsp (1–3 times per day)
- Third-party tested: No
- Price per serving: $0.21
According to the package directions, you can take this product before every meal for appetite control. It can also help you meet your daily fiber goal if your diet doesn't currently contain a lot of fiber-rich plant foods. It's not third-party tested, but it is vegan-friendly.
Metamucil will make your beverage thick and jelly-like if you let it sit for too long. This product also contains artificial flavor and color, although Metamucil offers unflavored and dye-free options. Depending on how many servings you use per day, the daily cost ranges from $0.21 to $0.64, so it's fairly affordable compared to other weight loss supplements on this list.

Best Green Tea Extract
Thorne Green Tea Phytosome
Pros
- Caffeine-free
- Vegan and third-party tested
- May support metabolism and reduce inflammation
Cons
- May be less effective than caffeine-containing supplements
- May not have a noticeable effect on weight
Key Specs
- Key ingredients: Green tea phytosome
- Supplement type: Capsule
- Serving size: 1 capsule
- Third-party tested: Yes
- Price per serving: $0.53

Best Probiotic
Codeage GLP-1 Probiotic+
Pros
- Vegan and third-party tested
- Contains probiotics that support weight control
- Affordable compared to other weight loss supplements
Cons
- May not have a noticeable effect
- Doesn't work like GLP-1 medications
Key Specs
- Key ingredients: Clostridium butyricum, Akkermansia muciniphila, Bifidobacterium infantis, chicory inulin
- Supplement type: Capsule
- Serving size: 1 capsule
- Third-party tested: Yes
- Price per serving: $0.33
Codeage supplements are vegan and third-party tested for the presence of contaminants like heavy metals. This probiotic is affordable compared to competitors and other supplements on this list. It costs about $0.33 per serving. However, in our research, we noted that some people who took the supplement experienced no noticeable effects on their weight. It's also important to clarify that, despite the name of this supplement, it's not a GLP-1 receptor agonist like the weight loss drugs semaglutide and tirzepatide.

Best Ready-to-Drink Protein
Premier Protein Shake
Pros
- 30 g of protein per serving
- Helps promote feelings of fullness
- Available at most grocery stores
Cons
- Not vegan-friendly
- Texture is somewhat chalky
Key Specs
- Key ingredients: Milk protein concentrate
- Supplement type: Shake
- Serving size: 1 shake
- Third-party tested: No
- Price per serving: $2.67
While Premier Protein shakes aren't third-party tested, they are easy to find. They're available at most grocery stores and even some convenience stores. Since they're made with milk protein, they're not vegan-friendly. However, the shakes are available in over 15 flavors, including Chocolate, Vanilla, Cafe Latte, Cookies & Cream, Cinnamon Roll, and Caramel. "They offer limited edition and seasonal flavors, too," notes Feder.
Throughout our research, we noted that some people find these shakes chalky, but most seemed pleased with the taste and texture.

Best Budget-Friendly
NOW Foods Glucomannan Pure Powder
Pros
- Affordable way to increase fiber intake
- May help regulate appetite
- Vegan-friendly
Cons
- Thickens quickly
Key Specs
- Key ingredients: Glucomannan
- Supplement type: Powder
- Serving size: ½ tsp
- Third-party tested: Certified by Intertek
- Price per serving: $0.12
Glucomannan is a soluble fiber made from the konjac root, a fibrous root vegetable native to Southeast Asia. NOW Foods Glucomannan Pure Powder is extremely affordable, at about $0.12 per serving. It's an inexpensive way to get an easy fiber boost with each meal. "Adding a fiber supplement like glucomannan to your diet can help support weight loss and improve gut health," says Best.
Comparison Table
Clostridium butyricum, Akkermansia muciniphila, Bifidobacterium infantis, chicory inulin
How We Chose the Best Weight Loss Supplements for Women
To choose the best weight loss supplements for women, I spoke with several registered dietitians and asked them to share the supplements they recommend to their clients and why. I spoke with the following RDs:
- Lindsay Fencl, RD, CD
- Vanessa Imus, RDN
- Nicole Ibarra, RD, LD
- Jesse Feder, RD
- Trista Best, MPH, RD
As a registered dietitian myself, I drew on my experience and knowledge of dietary supplements, weight loss, and women's unique hormonal and health needs to offer recommendations and compile more detailed information on weight loss supplements for women. I also aimed to include mostly third-party tested supplements at a variety of price points across various product types.
What to Look for When Buying Weight Loss Supplements for Women
Here are the most important factors to consider when buying weight loss supplements for women.
Evidence-Based Ingredients
Weight loss supplements are a broad category, including herbal supplements, prebiotics and probiotics, protein powders, meal replacements, and more. There are hundreds of ingredients that are said to be helpful for weight loss, but many lack evidence. It's a good idea to choose supplements that have been researched and shown to be effective, or those that are recommended by weight loss experts like registered dietitians or obesity medicine physicians.
Third-Party Testing
Some products that we consider weight loss supplements may not be third-party tested, though. Products like protein shakes, protein powders, and fiber powders are categorized as foods and feature a Nutrition Facts label rather than a Supplement Facts label. It's rare for these products to be third-party tested.
If other supplements aren't third-party tested, you can check on their website to see if they have a rigorous in-house testing protocol or if they share their lab reports publicly. These are signs that the brand may be reputable.
Realistic Claims
A supplement alone will not help you lose weight in a way that is sustainable or healthy. Be wary of supplements that feature claims about how much or how quickly you’ll lose weight. It's important to remember that supplements are one small part of a healthy lifestyle to support weight loss.
Price
If you have a significant amount of weight to lose, you may want to continue using a supplement for months or even years. For this reason, price is an important consideration. Make sure the supplements you choose fit comfortably within your budget. Additionally, if you plan to use a weight loss supplement indefinitely, it's best to consult a doctor before you start using it.
Safety
Finally, you'll want to be sure that the supplements you choose are safe to take. Check the ingredients to be sure they don't contain anything you're allergic to. Look for third-party tested or certified products so you know the label is accurate and the product is free of contaminants. Also, ask your healthcare provider if the supplement could interfere with any medications you’re currently taking.
How Can Weight Loss Supplements Help Women Lose Weight?
Weight loss supplements alone won't help you lose weight in a safe and sustainable way. Instead, you should approach supplements as one small piece of an overall lifestyle shift to healthier habits that will promote consistent, gradual, healthy weight loss of one to two pounds per week.
Weight loss supplements can work in many ways to help with weight loss, depending on their ingredients. Here are some of the most common ways weight loss supplements may help:
- Increasing Metabolic Rate Some ingredients, like green tea extracts, may slightly increase the number of calories you burn each day, which can offer small advantages for weight loss.
- Promoting Satiety Fiber and protein supplements can help you feel fuller, making it easier to stick to a reduced-calorie diet that supports weight loss.
- Enhancing the Gut Microbiome Prebiotic and probiotic supplements may change the composition of the gut microbiome. These bacteria can have a major influence on blood sugar control and hunger hormones.
What Is the Best Weight Loss Strategy for Women?
In summary:
- Extreme diets aren't sustainable and often result in weight regain.
- Any diet can work as long as you consume fewer calories than you burn each day.
- Focusing on lifestyle changes rather than dieting can promote gradual, sustainable weight loss.
- Stress management and good sleep habits can make it easier to make healthy choices.
FAQs
You can't specifically target belly fat when losing weight. However, supplements like protein or fiber may help you feel fuller, making it easier to stick to a calorie deficit that supports fat loss. For a more toned appearance, you can focus on core-strengthening exercises like planks and squat thrusts to develop your abdominal muscles. These muscles may not be visible until you reach your fat loss goals, but adding muscle can also help you naturally burn more calories to lose weight faster.
Why Trust Everyday Health

SaVanna Shoemaker, MS, RDN, LD
Author
SaVanna is a registered dietitian and health writer.
As a registered dietitan, SaVanna has worked with pregnant and postpartum women, infants and children, people with chronic kidney disease, and people who are critically ill. She is particularly interested in culinary and functional nutrition for weight loss and female hormone health.
She's currently a contributor for Forbes Vetted, Sports Illustrated Showcase, Mashable, and Carb Manager, and her work has also appeared in Greatist, mindbodygreen, and Bicycling Magazine, among other outlets.
SaVanna lives with her husband and three kids in Little Rock, Arkansas. She enjoys cooking, baking, gardening, and weightlifting.

Reyna Franco, RDN
Medical Reviewer
Reyna Franco, RDN, is a New York City–based dietitian-nutritionist, certified specialist in sports dietetics, and certified personal trainer. She is a diplomate of the American College of Lifestyle Medicine and has a master's degree in nutrition and exercise physiology from Columbia University.
In her private practice, she provides medical nutrition therapy for weight management, sports nutrition, diabetes, cardiac disease, renal disease, gastrointestinal disorders, cancer, food allergies, eating disorders, and childhood nutrition. To serve her diverse patients, she demonstrates cultural sensitivity and knowledge of customary food practices. She applies the tenets of lifestyle medicine to reduce the risk of chronic disease and improve health outcomes for her patients.
Franco is also a corporate wellness consultant who conducts wellness counseling and seminars for organizations of every size. She taught sports nutrition to medical students at the Albert Einstein College of Medicine, taught life cycle nutrition and nutrition counseling to undergraduate students at LaGuardia Community College, and precepts nutrition students and interns. She created the sports nutrition rotation for the New York Distance Dietetic Internship program.
She is the chair of the American College of Lifestyle Medicine's Registered Dietitian-Nutritionist Member Interest Group. She is also the treasurer and secretary of the New York State Academy of Nutrition and Dietetics, having previously served in many other leadership roles for the organization, including as past president, awards committee chair, and grant committee chair, among others. She is active in the local Greater New York Dietetic Association and Long Island Academy of Nutrition and Dietetics, too.

Daniel Oakley
Fact-Checker
Daniel Oakley is a journalist, editor, and fact-checker. He has written, edited, taught, and produced media for Dow Jones, S&P Global, IHS Markit, Third Coast Studios Magazine, and 826 National.
Oakley's path has always been a health-and-wellness-focused one. A competitive triathlete and racing fundraiser for the Leukemia and Lymphoma Society, he also spends summer weekends as an ISA-certified surf instructor and Red Cross professional water rescuer with Laru Beya Collective in Rockaway Beach, which helps kids master and delight in their own backyard — the ocean. It has taught Oakley that “optimizing body and mind” flourishes precisely at the wellspring of community.
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