Potassium 99 mg Citrate Complex – Electrolyte & Acid Balance | 60 Capsules
Potassium 99 mg Citrate Complex is a single-ingredient capsule with 99 mg of potassium from potassium citrate in each 1-capsule serving, 60 capsules per bottle. Potassium is an electrolyte your nerves and muscles rely on every time they fire, and the citrate form gives your body citrate to turn into bicarbonate, which promotes balanced acid levels.†
This one is for people who want a small, steady potassium top-up on top of a decent diet. Maybe you're in your 30s or 40s and building habits now so you can keep going strong for decades. Maybe your plate has fewer fruits, vegetables and beans on it than you'd like. Either way, you want potassium in a form your food already delivers it in.
Here's the candid part. One capsule is 2% of the Daily Value. U.S. adults already average about 3,016 mg of potassium a day from food if they're men and 2,320 mg if they're women, which falls short of the Adequate Intakes of 3,400 mg and 2,600 mg (NIH potassium fact sheet). This capsule helps close that gap a little. Potatoes, produce and legumes do the heavy lifting.
Why people take Potassium 99 mg Citrate Complex
- Potassium supports normal nerve signaling and muscle contraction.†
- It helps your cells hold their normal fluid balance.†
- The citrate in potassium citrate is converted to bicarbonate, an alkaline buffer that promotes balanced acid levels.†
- It adds a measured 99 mg of potassium to what you get from food, in citrate form, one of the forms fruits and vegetables carry.†
What's in each serving
| Ingredient | Amount per serving | % Daily Value |
|---|---|---|
| Potassium (from 275 potassium citrate) | 99 mg | 2% |
Serving size is 1 capsule. Each bottle holds 60 capsules, which is 60 servings at the label's 1-capsule serving. The 99 mg is elemental potassium, meaning the potassium itself, not the weight of the whole potassium citrate compound. Supplement Facts panels list potassium that way. The front label reads "Single Ingredient" and "Contains 99 mg potassium from potassium citrate," and carries no-gluten and no-GMO icons. For the full other-ingredients list, check the label on your bottle.
How Potassium 99 mg Citrate Complex works
Potassium: the electrolyte inside every cell
Potassium is the most abundant positively charged mineral inside your cells. Your cells keep about 30 times more potassium inside than outside, and they spend energy running the sodium-potassium pump to hold that difference. That gradient is what lets nerves send signals and muscles contract.† Healthy kidneys keep blood potassium in a narrow range by sending what you don't need out in urine (NIH fact sheet on how the body handles potassium).
Getting enough is the hard part. U.S. dietary guidance has flagged potassium as a shortfall nutrient, and a review in Advances in Nutrition traces part of the drop in intake to Western diets with fewer fruits and vegetables (Weaver 2013). The Daily Value you see on labels is 4,700 mg.
Why citrate
Potassium supplements come as chloride, citrate, gluconate, bicarbonate and other salts. In fruits and vegetables, potassium arrives with partners like citrate and phosphate, not chloride. The partner matters. After you absorb potassium citrate, your body metabolizes the citrate into bicarbonate, an alkaline buffer. That's why the label says it promotes balanced acid levels.† Potassium chloride, the form in salt substitutes, doesn't carry that alkaline partner.
What the research shows: in a 6-month placebo-controlled trial, 52 men and women (average age 65) took potassium citrate at 60 or 90 mmol a day. Both doses fully neutralized their dietary acid load, and 24-hour urine calcium fell by about 46 to 59 mg a day compared with placebo (Moseley 2013).
What it doesn't show: those doses work out to roughly 2,350 to 3,520 mg of potassium a day, or about 24 to 36 of these capsules. And the longer-term results are mixed. In a 2-year trial of 276 healthy postmenopausal women, potassium citrate at 18.5 or 55.5 mEq a day (about 720 to 2,170 mg of potassium) did not change bone turnover markers or bone density compared with placebo (Macdonald 2008). So think of one capsule as a modest daily contribution of citrate, not a stand-in for a plate of produce.
Absorption: what we can and can't say
Your body absorbs potassium efficiently, about 85% to 90% of what you eat, according to NIH. In a controlled crossover trial in 35 healthy adults, absorption from potassium gluconate supplements was above 94%, about the same as from potatoes (Macdonald-Clarke 2016). That study tested gluconate, not citrate, and we haven't found a head-to-head trial showing citrate is absorbed more completely than other forms. So we don't claim an absorption edge. The reason to pick citrate is the citrate itself.
Why 99 mg
Most potassium-only supplements contain 99 mg or less, and this one sits right at that line. The NIH Office of Dietary Supplements explains why: FDA has ruled some potassium chloride drug products that provide more than 99 mg unsafe, and it requires a warning on some potassium salts above that amount, so supplement makers generally stop at 99 mg. The upshot is simple. One capsule rounds out your intake, and your food supplies the bulk.
How to take Potassium 99 mg Citrate Complex
The label's serving size is 1 capsule. Follow the directions printed on your bottle and don't take more than it says. Pick a time of day you'll remember so it becomes a habit.
Potassium calls for extra care in two situations: if your kidneys don't clear potassium normally, or if you take medicines that make your body hold on to it, such as ACE inhibitors or potassium-sparing diuretics. In those cases, blood potassium can climb too high even from food, so talk with your practitioner before taking potassium from any supplement, this one included.
Ask your healthcare practitioner before use if you are pregnant, nursing, taking medication, or have a medical condition.
Don't take our word for it
- Verified by independent labs. ISO 17025-accredited labs check our test results.
- Every ingredient lot tested before use. Federal rules only require an identity test on incoming dietary ingredients. We test every incoming lot, including the potassium citrate in this capsule, for identity, potency, heavy metals and microbes.
- If it misses spec, it doesn't go in a bottle. More than 99% of our tests pass, and the lots that don't are turned away.
- A certificate of analysis for every lot. Every lot of Potassium 99 mg Citrate Complex has its own.
Made in the USA with globally sourced ingredients, in Mt. Angel, Oregon. It's a farm town of about 3,500 people in the Willamette Valley, and we make and test this product there in our UL-certified cGMP facility. The people who formulate, make and test this capsule work under one roof, and the owners work in the building too. The company has been owner-run since 2017. We've been making supplements in Oregon since 1974. That's 52 years, and we're not getting old either.
Frequently asked questions
How much potassium is in one capsule?
Each capsule has 99 mg of potassium from potassium citrate, which is 2% of the 4,700 mg Daily Value. The serving size is 1 capsule, and a bottle holds 60.
Why is it only 99 mg?
Because 99 mg is where potassium-only supplements generally stop. NIH notes that FDA has ruled some potassium chloride drug products above 99 mg unsafe and requires warnings on some potassium salts above that amount. Food is where most of your potassium should come from.
What's the difference between potassium citrate and potassium chloride?
The partner the potassium comes with. Both deliver potassium, but your body converts citrate into bicarbonate, an alkaline buffer, which is why potassium citrate promotes balanced acid levels.† Chloride is the form used in salt substitutes and doesn't provide that buffer.
Will I feel a difference?
Probably not, and we'd rather say so up front. One capsule adds 99 mg to a day that already includes, on average, about 2,300 to 3,000 mg of potassium from food. It's a steady top-up, not something you'll notice the way you notice coffee.
Can I take it with a multivitamin?
Yes, as long as you follow each label. Our Men's Multi and Women's Multi each list 40 mg of potassium (citrate) per 2-capsule serving, so one capsule of this plus either multi comes to 139 mg, about 3% of the Daily Value. If you're building a mineral routine, Good Magnesium and Calcium Citrate are our single-mineral magnesium and calcium options.
Is it safe to take with medication?
Ask your practitioner first. That goes double for potassium if you take an ACE inhibitor or a potassium-sparing diuretic, or if your kidneys don't clear potassium normally, because those situations can push blood potassium too high even at food-level intakes.
Keep learning
- How much potassium adults need, where it comes from in food, and who should be careful with it (NIH Office of Dietary Supplements)
- What's in Men's Multi, including its 40 mg of potassium
- What's in Women's Multi, including its 40 mg of potassium
References
- Weaver CM. Potassium and health. Adv Nutr. 2013. PubMed
- Moseley KF et al. Potassium citrate supplementation results in sustained improvement in calcium balance in older men and women. J Bone Miner Res. 2013. PubMed
- Macdonald HM et al. Effect of potassium citrate supplementation or increased fruit and vegetable intake on bone metabolism in healthy postmenopausal women: a randomized controlled trial. Am J Clin Nutr. 2008. PubMed
- Macdonald-Clarke CJ et al. Bioavailability of potassium from potatoes and potassium gluconate: a randomized dose response trial. Am J Clin Nutr. 2016. PubMed
†These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
