Taking a GLP-1 Medication? We Asked Dietitians Which Supplements Matter Most to Support Your Weight Loss Journey

“A supplement I like is the Supergut GLP-1 support; it comes in unflavored (so you can mix it into anything) or a variety of flavors,” says Reisdorf. It contains 6 grams of fiber from a blend of green banana fiber, oat beta-glucan, and soluble vegetable fiber.

Mitri recommends psyllium fiber supplements for her clients until they can gradually meet a goal of 25 to 35 grams of fiber from food. We like organic India Psyllium Husk because it’s a simple, single-ingredient fiber supplement made from whole-husk psyllium, providing 4 grams of fiber per serving.

As with any psyllium supplement, it’s important to start with a smaller amount, increase gradually, and drink plenty of fluids to reduce the risk of overdoing it.

We like that this formula uses organic ingredients and contains no artificial additives. It’s also NSF Certified Gluten-Free, meaning the product has been independently tested to meet strict standards for gluten content. It’s flavorless, so you can add it to just about anything to help meet your daily fiber needs.

We like the simplicity of this product and how easy it is to find at online and local retailers. This specific strain of S. boulardii CNCM I-745 is found exclusively in this Florastor product (you can find other products with other types of S. boulardii  ), which adds to its credibility, as it’s been used in many studies.

We like that this product is shelf-stable, so there is no need for refrigeration, and all Jarrow products follow a rigorous in-house testing process for quality control.

Now Foods Magnesium Citrate Powder offers 450 milligrams of magnesium citrate per teaspoon in an easy-to-mix format. Powdered magnesium can be especially useful if you don’t like swallowing pills, or if you want to easily adjust your dosage.

We like that this product contains only magnesium citrate, without additives or fillers. It’s also third-party tested, meaning it has been independently evaluated for purity and potential contaminants.

I often recommend Thorne for its high-quality, research-informed supplements and third-party testing standards. It’s also another powder form, so you can adjust your dose if needed.

For those who prefer capsules over powder, Pure Encapsulations Magnesium Citrate offers a simple solution. Each capsule provides 150 milligrams of magnesium citrate, without unnecessary fillers or artificial ingredients.

Pure Encapsulations is known for its high standards for quality and third-party testing. It’s also vegan and gluten-free.

Grüns are multivitamin gummies with 20 vitamins and minerals, plus 6 grams of fiber, per serving. “I personally take Grüns because I like the gummy form, and they have additional fiber,” says Reisdorf. I’m right there with her. I love gummies, but don’t love the idea of sugar sitting on my teeth, which makes the sugar-free original and newer mango sorbet flavor feel like a treat.

Grüns are manufactured in facilities in the United States and Canada that are registered or compliant with NSF, Good Manufacturing Processes, and U.S. Food and Drug Administration standards. The company reports that each lot is tested for label accuracy, pesticides, heavy metals, and microbial contaminants, and that Eurofins Scientific, a respected testing company, provides third-party verification. Keep in mind that these don’t contain magnesium. That’s fairly common in multivitamins, since magnesium requires a larger dose and simply takes up too much space to fit into many standard formulas.

Now Foods Daily Vits Multi Vitamin & Mineral offers a budget-friendly option for covering your basic nutrient needs. The formula provides a range of essential vitamins and minerals, without unnecessary extras.

“Now Foods multivitamins are a quality choice, as they are thoroughly vetted and tested, are affordable, and of good quality,” Mitri notes. Like many multivitamins, this product does not contain iron (as not everyone needs it), and its magnesium content is relatively low. If you do need supplemental iron, you’ll likely need to get it from a separate product.

Pure Synergy Multi-Vita-Min is a whole–food–based multivitamin from a company I like for its quality standards and ingredient philosophy. Like the others in this category, this product doesn’t contain iron or magnesium, but it’s a good option to fill in the gaps until you can eat a more balanced diet.

Pure Synergy emphasizes organic, non-GMO ingredients and reports that its products undergo internal and third-party testing for contaminants like heavy metals and microbes.

If your intake is really low and you need a broader range of vitamins and minerals, this may not be the right choice. But if you eat a fairly balanced diet and only need to fill in a few nutrient options, Ritual is a convenient option.

GoHydrate is a flavored electrolyte powder with five electrolytes, including magnesium, calcium, phosphorus, and potassium. Its refreshing flavors, which are sweetened with stevia, can make it easier to drink more fluids throughout the day.

Liquid I.V. Hydration Multiplier offers slightly more sodium per serving (510 milligrams) than the others on our list. This can make it a helpful option for athletes, travel, or situations where fluid needs may be higher. It also provides B vitamins, which could be helpful for those who don’t get enough in their diet. Since this is high in sodium, keep an eye on your overall intake, so that you don’t go over the recommended 2,300 milligrams per day.

“Liquid I.V. is a good choice for daily hydration, and provides a solid dose of key electrolytes like sodium and potassium,” says Mitri. “They also offer many sugar-free flavors that are only 20 calories, helping you get in your electrolytes without unnecessary calories or added sugar.” Liquid I.V. also stands out for its wide variety of flavors, including classic citrus and fruit-based options.

I love the convenience of OWYN High-Protein Complete Nutrition Shakes, with 26 grams of plant-based protein, in a ready-to-drink format. These smooth, vegan shakes have a mild chocolate flavor that isn’t overly sweet or chalky. The texture is lighter and thinner than many shakes, making it easy to drink on the go or when your appetite is flat.

Beyond protein, each bottle includes a greens blend with spinach, kale, and broccoli, plus 535 milligrams of omega-3s from flaxseed oil, and a range of added vitamins and minerals. While this nutrient-dense profile can be a bonus, you’ll want to check to make sure you aren’t getting too much if you also take a multivitamin.

Quest Nutrition’s ready-to-drink protein contains 30 grams of protein. The shake has a smooth texture and comes in several flavors, with a nutritional profile that is primarily protein with minimal fat and carbohydrates.

It also provides a notable amount of calcium, which may be a bonus if you aren’t getting enough. It is sweetened with sucralose, which is an artificial sweetener that some people prefer to avoid, but otherwise it’s a tasty option to help you fill those protein gaps.

Orgain’s protein shakes provide 20 grams of protein from pea protein. It’s dairy-free, and we like that it has a relatively short ingredient list, compared with some other ready-to-drink shakes.

It’s sweetened with monk fruit, so it offers a low sugar option without artificial sweeteners. It’s also creamy and convenient to sip on the go, which may make it easier to drink when your appetite is low or you need a quick protein source.

If you prefer making your own protein smoothies, Beam offers a tasty plant-based powder with 20 grams of pea protein isolate. It contains only 110 calories per serving, so you can either keep it simple as a snack or blend it with nut butter, chia seeds, and fruit to increase its nutrient density.

We also like that all Beam products are third-party tested, and you can enter your product’s lot number on the website to view its quality assurance certificate.