Introduction
A ketogenic diet drops carbs very low so your body switches to fat as its main fuel. The changes can be exciting, but your plate also narrows sharply: whole grains, legumes, most fruit and starchy vegetables all but disappear.
Those foods supply a lot of vitamins, minerals and fibre. Without them, eating keto for the long term, and eating it well, takes more careful planning. This guide covers the five nutrients people on keto need most, the USANA products that match, and the carbs and sugar in each product so you can check them against your daily carb budget.
Why Keto Calls for Supplements
In 2019, researchers at the University of Glasgow published a systematic review in Obesity Reviews on how carbohydrate-restricted diets affect micronutrients. Intakes of thiamine (vitamin B1), folate, magnesium, calcium, iron and iodine all fell. Their recommendation was clear: when designing or following a carbohydrate-restricted diet, consider micronutrients from food and/or supplements.
On top of that, early keto brings heavy sodium and water loss, a sudden drop in fibre, and a gut microbiome that has to adapt to a whole new way of eating. Each of these is a place where good nutrition support makes a difference.
Two Rules for Choosing Keto Supplements
- Check carbs and sugar. Many drink mixes and gummies contain sugar or maltodextrin, and one serving can use up a good share of your daily carb budget. Read the nutrition panel before you buy.
- Check quality. You take supplements every day for the long term, so manufacturing standards and third-party testing matter just as much.
The Five Nutrients People on Keto Need Most
1. Electrolytes: sodium and magnesium
When carbs drop, insulin falls and the kidneys excrete more sodium and water. Keto also cuts out key magnesium sources such as whole grains and legumes. Headaches, fatigue and night-time cramps often follow.
Replace sodium with broth, bone broth and salting your food. For magnesium, we recommend USANA MagneCal D: a 1:1 calcium-to-magnesium formula with vitamin D3. On the Australia/New Zealand label, each tablet provides 125 mg magnesium and 125 mg calcium; take two tablets twice daily with food for 500 mg of magnesium a day. MagneCal D is NSF Certified for Sport.
For the full electrolyte plan, see Keto Flu: How to Get Through It With Salt, Magnesium and Electrolytes.
2. Daily foundation: USANA CellSentials
The thiamine and folate that fell in the review above mostly come from whole grains, legumes and fruit. B vitamins help turn fat and protein into energy, the very pathways keto relies on.
USANA CellSentials is a two-bottle system, Vita-Antioxidant and Core Minerals, with USANA's US-patented InCelligence Complex. USANA describes it as comprehensive, optimised foundational nutrition with powerful antioxidant protection that supports cellular renewal. Take two tablets of each twice daily with meals. Both products are NSF Certified for Sport.
Keto narrows the range of foods you eat; CellSentials gives your daily nutrition a complete base. Learn more: How to Take USANA CellSentials.
🎬 Watch the video: USANA CellSentials vs a Regular Multivitamin: What's Different
3. Omega-3: USANA BiOmega
Keto is built on fat, so fat quality matters all the more. The omega-3 fatty acids EPA and DHA come mainly from oily fish and support heart, brain and joint health, yet most people do not eat enough oily fish.
USANA BiOmega is made from small cold-water fish (anchovies and sardines), purified by double high-vacuum molecular distillation and returned to the natural triglyceride form. On the Australia/New Zealand label, each softgel provides 320 mg EPA and 230 mg DHA, plus vitamin D3; adults take two softgels daily with food. BiOmega is NSF Certified for Sport.
For people on keto, it is a simple way to make your daily fat intake more balanced and more valuable. Learn more: What Is Inside USANA BiOmega?
🎬 Watch the video: How to Choose a Fish Oil | USANA BiOmega
4. Fibre: USANA Fibergy Active
With grains, legumes and fruit off the plate, fibre is often the biggest gap in a keto diet. Fibre supports regularity, and prebiotic fibre also feeds beneficial gut bacteria.
USANA Fibergy Active blends several fibres, including fructooligosaccharides, organic agave inulin and sugarcane fibre. It is low glycaemic and vegan. On the US label, one serving (one rounded tablespoon, 12 g) has 11 g carbohydrate, of which 9 g is fibre, and 0 g sugar, leaving only about 2 g of net carbs. That makes it a great fit for keto.
A randomised, double-blind, placebo-controlled study USANA ran with the University of California, Davis found that bifidobacteria in the gut increased with this fibre blend. Learn more: Keto Constipation: Fibre and Gut Health on a Ketogenic Diet.
5. Gut bacteria: USANA Probiotic
When your diet changes suddenly, your gut microbiome needs time to find a new balance.
USANA Probiotic combines two of the most researched strains, Bifidobacterium BB-12 and Lactobacillus rhamnosus LGG, in a 50:50 blend, with 12 billion CFU guaranteed at manufacture and room-temperature stability. On the Australia/New Zealand label, each stick has under 1 g carbohydrate and 0 g sugar. USANA lists its benefits as promoting good digestion and nutrient absorption, maintaining digestive comfort and regularity, and supporting healthy immunity. Learn more: USANA Probiotic Explained.
Carbs at a Glance
| USANA product | Carbs per serving | Sugar per serving | Source |
|---|---|---|---|
| Fibergy Active | 11 g (9 g fibre) | 0 g | US label, one rounded tablespoon |
| Probiotic | Under 1 g | 0 g | AU/NZ label, one stick |
| CellSentials, MagneCal D, BiOmega | Tablets and softgels | — | Taken with meals |
Your Keto Supplement Plan
| Nutrient | USANA product | How |
|---|---|---|
| Electrolytes (magnesium) | MagneCal D | Two tablets twice daily with food (AU/NZ label) |
| Daily foundation | CellSentials | Two of each, twice daily with meals |
| Omega-3 | BiOmega | Two softgels daily with food (AU/NZ label) |
| Fibre | Fibergy Active | One rounded tablespoon daily with plenty of liquid |
| Gut bacteria | Probiotic | One stick every other day, or as needed |
Core plan: MagneCal D + CellSentials + BiOmega, covering electrolytes, your daily vitamins and minerals, and quality fats.
Complete plan: add Fibergy Active and Probiotic to look after your gut, the part of a keto diet that is easiest to overlook.
Formulas, directions and availability differ by country; always follow the label on your product.
Why USANA
- Pharmaceutical-grade manufacturing. USANA manufactures its supplements to pharmaceutical-grade standards, testing every batch for purity, identity, composition, potency and safety.
- NSF certification. CellSentials, MagneCal D, BiOmega and other products, ten US products in all, are listed in the NSF Certified for Sport database. USANA also holds NSF/ANSI 173 (dietary supplement contents) and NSF/ANSI 455-2 (dietary supplement GMP) certification.
- More than 30 years of science. USANA was founded by a scientist in 1992, has more than 150 scientists and is listed on the New York Stock Exchange.
Learn more: The USANA Difference.
What to Read Next
- Electrolytes in early keto → Keto Flu
- Fibre and gut health → Keto Constipation
- Why the calcium-to-magnesium ratio matters → USANA MagneCal D
- How fish oil is purified → What Is Inside USANA BiOmega?
- 📄 USANA prices in your country, member vs retail: Price list
References
- Churuangsuk C, Griffiths D, Lean MEJ, Combet E. Impacts of carbohydrate-restricted diets on micronutrient intakes and status: A systematic review. Obes Rev. 2019;20(8):1132–1147.
Important Notice
This article is general information about dietary supplements, written by an independent USANA Brand Partner. It is not medical or nutritional advice. A ketogenic diet is not right for everyone: if you take medication for blood sugar or blood pressure, have kidney or heart problems, or are pregnant or breastfeeding, talk to your doctor before starting keto or taking supplements. Product formulas, directions and availability differ by country; always read the label on your product and use as directed. These statements have not been evaluated by the Food and Drug Administration, and USANA products are not intended to diagnose, treat, cure or prevent any disease.
