This post may contain affiliate links. For educational purposes only, not medical advice. Details
You're Probably Thinking About Electrolytes Wrong
Somewhere in week one of carnivore, someone told you to take electrolytes. Maybe you bought a packet or a supplement powder. Maybe you added some salt to your water and called it handled.
Here's the thing: electrolyte management on carnivore is more specific than "take some salt when you feel a cramp." Done wrong, it can actually make your adaptation worse. Done right, it's one of the most impactful changes you can make for energy, sleep, plateau-busting, and reducing adaptation symptoms.
One note before we start: everything here applies to keto as well. If that's your lane, the electrolyte fix guide over at KetoDial covers the keto-specific numbers.
Let me walk you through what's actually going on, what to do about it, and the one question you need to settle before you change your sodium at all.
Why Electrolyte Needs Are Higher on Carnivore
This is the foundation. Your electrolyte needs on carnivore are genuinely different from what they were on a standard diet — not just slightly different, significantly different.
Here's the mechanism: carbohydrate intake stimulates insulin. Insulin tells the kidneys to retain sodium. When you eliminate carbs, insulin drops, and the kidney's retention signal disappears. Your kidneys then excrete sodium at a much higher rate than before.
This sodium loss triggers a cascade. Low sodium causes aldosterone to rise (a hormone that tries to retain sodium). Aldosterone causes potassium excretion. Now you're losing both sodium and potassium simultaneously. This two-electrolyte loss is the root cause of most of the symptoms people attribute to "carnivore flu" — fatigue, headaches, muscle weakness, brain fog, palpitations, poor sleep.
A single salt packet in a water bottle is not usually the whole answer either, and a lot of people in their first month are eating food they'd have called badly under-seasoned a month ago.
First, The Question That Comes Before Sodium
Sodium and potassium are the two minerals where the right answer depends on things a web page cannot see. If you take a daily pill for your blood pressure or your heart, a water pill, or anything to do with your kidneys, ask your doctor or your pharmacist before you increase either one. That includes salt substitutes like Lite Salt or No Salt and any electrolyte packet. Some of those medicines already hold potassium in your body, so extra on top is the problem rather than the help. Have the same conversation if a blood test has ever come back with a note about your sodium, your potassium or your kidney function, or if anyone has ever told you to watch your salt. If you're not sure whether that's you, that's a reason to ask rather than to assume it isn't.
Sodium: Why It Changes, and How To Judge It
The mechanism is the useful part. Carbohydrate raises insulin, insulin tells your kidneys to hold on to sodium, and when you take the carbohydrate away that signal weakens and more sodium leaves than you're used to. Someone eating a standard diet gets a good deal of sodium from processed food without thinking about it. Cut the processed food and switch to whole animal products, and that quiet supply disappears at the same moment your kidneys start letting go of more.
What I'm not going to do is put a daily milligram target on this page, or tell you to measure salt into a glass of water on a schedule. Those two things together are how a page like this one ends up recommending far more sodium than it says it does, and the readers most likely to be harmed by that arithmetic are the least likely to know it applies to them. Here's the honest version:
- Season every meal until it tastes right to you, and expect your taste for salt to climb in the first couple of weeks
- Use bone broth as the base for your first meal if you like it. It's food, it's pleasant, and unlike a measured glass it's self-limiting
- If you train hard or sweat a lot, you'll want more than someone who doesn't, and your thirst and your taste are better guides to that than my numbers are
If you want targets set against your own weight, activity and medication list rather than a range aimed at everyone, that's a conversation with your own clinician. It's the one place a real number belongs.
Potassium: Off The Plate
Potassium is easier on carnivore than most people expect, and it's also the one where a target does more harm than good. A number invites you to close the gap, and closing a potassium gap with a supplement or a salt substitute is the move that goes wrong. So no target here, just food.
What carnivore food actually carries:
- Ground beef (3 oz): ~290mg
- Ribeye steak (3 oz): ~300mg
- Salmon (3 oz): ~430mg
- Chicken thigh (3 oz): ~240mg
- Whole egg: ~65mg
Eating a pound and a half to two pounds of varied animal food a day, with liver about once a week, puts most people somewhere sensible without any arithmetic. If you think you're short, close it with food rather than a scoop: more beef, eggs, and a cup of broth will do it. We do not publish potassium dosing of any kind on this site, and that is on purpose. Too much potassium affects heart rhythm, and where that line falls depends on your kidneys and your prescriptions rather than on a number I could print for everybody. The 99mg on most supplement labels does not answer it either, because that is a serving size the supplement industry chose for itself rather than a dose anyone measured against you. And a salt substitute is a potassium supplement wearing a kitchen label. If you take an ACE inhibitor, an ARB, or a potassium-sparing diuretic, or your kidney function has ever been flagged on a blood test, your body may already be holding on to more potassium than you realise, and extra on top is the risk rather than the remedy.
So: potassium from food, always, and if you're wondering whether you're an exception then that question belongs with your doctor or your pharmacist rather than with a search box. Food is the safe route here and it also happens to be the easy one.
Magnesium: The Forgotten Electrolyte
Magnesium doesn't get the attention sodium and potassium do, but it's equally important for the symptoms people on carnivore complain about — and carnivore is relatively low in magnesium compared to a plant-forward diet.
Low magnesium can show up as muscle cramps, especially at night, poor sleep, anxiety, constipation and fatigue. Those overlap almost completely with what gets called carnivore adaptation, which is exactly why I won't tell you that's what yours is. An overlapping symptom list is not a diagnosis, and the only thing that actually distinguishes them is time and, if it drags on, a blood test.
A heartbeat that races or feels like it's skipping used to be on that list and I've taken it off. It's the one symptom here that shouldn't be answered with a supplement, because both too much and too little potassium cause it and they feel identical. Ring your doctor and mention that you've changed how you eat. With chest pain, breathlessness or fainting alongside it, that's urgent care today.
On forms, which is the practical part: magnesium glycinate absorbs best with the least laxative effect, magnesium malate is a reasonable alternative, and magnesium oxide is cheap, poorly absorbed and mostly acts as a laxative. Evening is the right time. How much is right for you depends on what else you take, so that's a question for your pharmacist, who can see your list, and there's no reason not to buy the smallest bottle first.
Timing Matters More Than Most People Realize
When you take electrolytes affects how well they work:
- First thing in the morning: Your body has been excreting sodium all night. Starting the day with a sodium-containing drink (salted water, bone broth) before coffee helps prevent the midday energy crash many carnivore beginners experience.
- Before and after training: Exercise accelerates electrolyte loss significantly. Salting your food, or a cup of broth, around a hard session is the version of this that doesn't need measuring. Potassium isn't on this list, for the reason in the section above.
- Magnesium before bed: Magnesium glycinate is calming and supports sleep onset. Taking it 30-60 minutes before bed is more useful than taking it with breakfast.
- Not all at once: Splitting sodium intake across 2-3 doses is more effective than a large single dose. Your kidneys can only process sodium so fast — large single doses are partly wasted.
What To Make Of It If You Still Feel Rough
Plenty of people in their first month are genuinely under-seasoning their food, and a few things point that way: afternoon headaches, a real craving for salty food, feeling better after a meal and worse between meals, flat workouts. If that's the picture and nothing in the medication section above applied to you, season more heavily and give it a week.
Two things that used to be on that list are not on it any more, and I want to say why rather than just remove them.
- Dizziness on standing. This page used to read that as a sign to add salt. It has plenty of other causes, and it's one of the commoner reasons a blood pressure medication needs adjusting after a diet change. Mention it to your doctor instead of salting past it.
- Fatigue that doesn't improve with rest. Genuine, persistent fatigue is worth investigating rather than seasoning. Thyroid, iron and B12 are all ordinary explanations, and all three are a blood test rather than a guess.
And the instruction that used to close this section, to increase sodium by a set amount per day for a week if you still felt bad, is gone for good. A page cannot see who is reading it. Escalating a stranger's sodium on a schedule is the one thing on this site that most needs a person who has your chart, and if seasoning to taste for a fortnight hasn't sorted it out then the next step is that conversation, not a bigger number.
The Connection to Plateau
Chronic electrolyte deficiency — especially sodium — elevates cortisol. As I covered in the plateau post, elevated cortisol impairs fat mobilization and can stall weight loss even when everything else is correct.
Fixing electrolytes isn't just about feeling better during adaptation. For some people, it's the direct mechanism behind a weight loss plateau. If you've been stalled and you haven't dialed in your electrolyte protocol specifically, that's worth trying before any other dietary change.
Note: I'm a health coach and writer, not a doctor. If you have kidney disease, heart conditions, or take medications affecting electrolyte balance, please work with your physician before making significant changes to your electrolyte intake.