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12 Keto Supplements That Are Worth Your Money

Keto eaters eliminate a lot of foods, so they might be lacking in certain nutrients. We asked the experts which keto supplements they recommend to keep your body functioning at its prime.

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Nature's Way 100% Potency Pure Source MCT Oil From Coconut- Certified Paleo, Certified Vegan- Non-GMO Project Verified, Vegetarian, Gluten-free, Flavorless, No Filler Oils, Hexane-free- 30 Fluid Ounce via

MCT oil

Medium-chain triglycerides (MCT) are fatty acids usually derived from coconut or palm oil. They are one of several popular keto supplements commonly used by keto dieters. Elroy Vojdani, MD, IFMCP, a functional medicine doctor in Los Angeles, recommends adding a tablespoon or two to a coffee or smoothie in the morning to fuel ketosis and boost mental energy. Indeed, a 2018 review suggests that people who use MCT oil reach ketosis more quickly than people who do not. Plus, people who use MCT oil may have higher levels of circulating ketones in the blood, the review said. “The more circulating ketones you have, the more potential fuel your brain cells have to use when in ketosis,” Dr. Vojdani says.

Taking it in the morning will help you get the biggest benefits from that brain boost, he adds. “It really helps curb appetite, pushing your first true meal into later in the day and potentially amplifying the effect of intermittent fasting if you are doing this alongside keto,” he says. Start with small doses so you don’t cause stomach pain.

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Perfect Keto Chocolate Exogenous Ketones: Base BHB Salts Supplement. Ketones for Ketogenic Diet Best to Support Energy, Focus and Ketosis Beta-Hydroxybutyrate BHB Saltvia

BHB salts

This is a type of ketone metabolite—an energy molecule. Your body forms beta-hydroxybutyrate (BHB) when it’s breaking down and burning fat; people in ketosis tend to have higher levels of BHB. As one of many keto supplements, BHB salts “trick the body and force the brain to lower glucose production and switch to burning fat instead,” says Sarah Peterson, content manager at Perfect Keto. “It would be especially useful when you’re starting keto to ensure a smooth transition.” Learn how to avoid these 10 ways the keto diet can backfire.

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Dr. Tobias Omega 3 Fish Oil Triple Strength, Burpless, Non-GMO, NSF-Certified, 180 Counts via

Omega-3 fatty acids

Fish oils are one of the most popular keto supplements because they are a rich source of heart-healthy omega-3 fatty acids. These fats are especially important for keto dieters, says Dr. Vojdani. “One thing we know for certain with ketogenic diets is that if they are higher in saturated fat derived from animals, they have a greater tendency to cause a worsening of cholesterol numbers linked to cardiovascular disease,” he says. “It’s paramount to be sure that your version of keto combats this by increasing your exposure to plant-derived poly- and monounsaturated fats, and clean sources of fish-derived omega-3 fatty acids.” Fish oil supplements can cause fishy burps, though, so Dr. Vojdani recommends taking omega-3 supplements in the morning with food to avoid the returning scents.

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Perfect Keto Protein Powder Unflavored: Grassfed Collagen Peptides Low Carb Keto Drink Supplement With MCT Oil Powder - Best as Keto Drink Creamer or added to Ketogenic Diet Snacks Paleo & Gluten Free via


Collagen is a protein that’s derived from bones, marrow, and connective tissues from animals. It’s one of several keto supplements dieters turn to for help with muscle development—ketosis can eat away at muscle if you don’t have enough fat for fuel—and it’s a great source of energy. “Many people are familiar with the fact that collagen can help with hair, nail, and skin health, but most people don’t realize that taking a collagen supplement can kick you out of ketosis, so it’s important to use a keto-friendly collagen—essentially a blend of collagen and MCT oil powder,” says functional medicine practitioner Anthony Gustin, DC, founder and CEO of Perfect Keto. “The MCT oil powder slows down the absorption of collagen in the body so that it can be used for healing and recovering instead of quickly turning into glucose.” Read up on the 13 things people always get wrong about the keto diet.

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Triple Calm Magnesium - 150mg of Magnesium Taurate, Glycinate, and Malate for Optimal Relaxation, Stress and Anxiety Relief, and Improved Sleep. 120 Capsules. via


As many as 50 percent of Americans are low on magnesium, a nutrient that’s important for muscle and bone health, blood pressure regulation, and more. “But people on a ketogenic diet are at a higher risk,” says Caleb Backe, a health and wellness expert for Maple Holistics. “This is because magnesium-rich foods like fruits and beans are also high in carbs. You can eat spinach, avocado, and other low-carb magnesium-rich foods to get your fill.” Keto dieters who are low on magnesium may experience symptoms of the keto flu, which includes fatigue, headaches, and cramps. You can also take a magnesium supplement as one of your keto supplements.

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Zenwise Health Digestive Enzymes Plus Prebiotics & Probiotics - Natural Support for Better Digestion & Lactose Absorption - For Bloating & Constipation + Gas Relief - 180 Vegetarian Capsulesvia

Digestive enzymes

Your gastrointestinal (GI) system likes fiber. It helps feed the good-for-your-gut probiotics that live in there, and it keeps things moving so you stay regular. But when you begin a keto diet, you switch from a fiber-rich diet to one that is primarily fat and protein. “That may take a toll on your digestive system,” Backe says. “If you aren’t used to eating 75 percent fat, you may experience symptoms like diarrhea and nausea. The higher amounts of protein may also contribute to digestive issues.” Backe says a digestive enzyme blend will help break down fats and proteins to improve your digestion, which helps prevent constipation and other issues. You should take a digestive enzyme supplement that contains both lipase and protease enzymes for the best results. Make sure you know about the most common reasons people fail on the keto diet.

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Kirkland Signature Mature Adult Multi Vitamin Tablets - 400 ct via


In the first weeks and months of a keto diet, your regular nutritional intake will be upended by your new diet. That can quickly alter your levels of specific nutrients your body relies on, so a multivitamin is one of the keto supplements you should consider to keep your body functioning normally. “Most people following the ketogenic diet will benefit from taking a well-formulated multivitamin, which supplies the B vitamins that you could be missing out on from not eating whole grains and legumes,” says Rebecca Oshiro, MS, MA, CN, MCMA, a coach for wellness company Arivale. Oshiro adds that if you have a sensitive stomach, you should take your multivitamin with food. If you don’t, take it any time of the day for the benefits. Check out the 13 things doctors want you to know about the keto diet.

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Citracal Petites, Highly Soluble, Easily Digested, 400 mg Calcium Citrate With 500 IU Vitamin D3, Bone Health Supplement for Adults, Relatively Small Easy-to-Swallow Caplets, 200 Count via

Calcium supplements

Keto dieters can often get calcium from cheese, but other calcium-rich sources like yogurt and milk should be limited because they’re fairly high in carbs. Oshiro says you can get calcium from canned fish, such as sardines, salmon, and mackerel with bones—”and yes, you eat the bones,” she says. You can also add a calcium supplement. “Calcium citrate is a well-absorbed form that you can take on an empty stomach or with food,” she says. “Calcium carbonate supplements are cheaper, but they need to be consumed with food to ensure maximum absorption.”

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NOW Psyllium Husk 500 mg,500 Capsules via


The ketogenic diet is a low-carb diet, which often means healthy sources of fiber like whole grains, fruit, and certain vegetables are off-limits. (Brussels sprouts and cauliflower are great keto-friendly fiber sources.) For some dieters, a fiber supplement may be necessary. “The ketogenic diet is low in fiber, so you’ll want to consider a source of supplemental fiber, such as psyllium,” Oshiro says. “When supplementing with fiber, start slowly and build up to the recommended dose on the label. This allows your GI tract to adjust to this increase in fiber and minimizes any uncomfortable symptoms, such as cramping and gas.” Check out these other 15 things you need to know before starting the keto diet.

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Nature Made Super B Complex Full Strength Softgel, 60 Ct via

Vitamin B complex

The keto diet drastically changes the brain’s energy levels and blood sugar content as fats replace carbs as the body’s energy source. Vitamin B deficiency can cause tiredness and weakness, so beginner keto dieters should consider supplementing it while their bodies adjust to a low-carb eating plan, says Samantha Morrison, a health and wellness expert for Glacier Wellness. “It’s not uncommon for people beginning the keto diet to experience the infamous ‘keto flu,'” she says. “This debilitating readjustment phase can produce a wide variety of withdrawal-like symptoms, including extreme exhaustion, brain fog, and cramping.”

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NatureWise Vitamin D3 5,000 IU for Healthy Muscle Function, Bone Health and Immune Support, Non-GMO in Cold-Pressed Organic Olive Oil,Gluten-Free, 1-year supply, 360 count via

Vitamin D

A keto diet doesn’t increase a person’s risk for a vitamin D deficiency, per se. In fact, most Americans have too little of the so-called “sunshine vitamin” that your body can produce D naturally when it’s exposed to the sun’s rays. But keto eaters in particular may benefit from a vitamin D supplement because it helps the body absorb calcium, a nutrient that can be hard to come by in keto-friendly foods. The extra boost of absorption can make the most of the calcium in the foods you do eat. Vitamin D also helps encourage cell growth, maintain bone health, and decrease inflammation.

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LyteShow - Electrolyte Concentrate for Rapid Rehydration - NO Sugars, NO Additives - 40 Servings (With Magnesium, Potassium, Zinc) via

Electrolyte supplements

As your body is adjusting to the keto diet, you’ll begin to shed water weight—and you’ll continue to lose greater amounts of fluids throughout the keto diet. With urine go vital electrolytes: sodium, potassium, and magnesium. When levels of these electrolytes fall too far, you may experience symptoms of the keto flu. To ward off the keto flu and symptoms connected to electrolyte loss, you can eat more vitamin-rich foods and greater amounts of sodium, or you can take an electrolyte supplement. You won’t want to miss these other 13 vitamins and supplements that help with weight loss.

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Every product is independently selected by our editors. If you buy something through our links, we may earn an affiliate commission.

Kimberly Holland
Kimberly Holland is a lifestyle writer and editor based in Birmingham, Alabama. When not organizing her books by color, Holland enjoys toying with new kitchen gadgets and feeding her friends all her cooking experiments.