Klean Athlete Calcium (Citrate)

Endurance athletes put more stress on their bones than they realize. From daily running to heavy strength blocks; it's something your body can adapt to but only if it has the raw materials it needs.

Klean Athlete Calcium (Citrate) delivers highly bioavailable calcium citrate to support bone density, muscle contraction, and cardiovascular health in athletes

Citrate Form = Superior Absorption – Calcium citrate is absorbed up to 24% more efficiently than calcium carbonate, and unlike carbonate, it doesn't need to be taken with food. For athletes with high training volumes or variable eating schedules, this flexibility and absorption advantage matters.

Bone Density That Holds Up to Training – Calcium is the primary mineral in bone tissue. Consistent daily intake helps maintain the bone density that absorbs impact, resists stress fractures, and keeps you training through long seasons without breaking down.

Muscle Contraction and Cardiovascular Function – Calcium isn't just a bone mineral. It's the trigger for every muscle contraction in your body — skeletal, smooth, and cardiac. Adequate calcium levels support proper muscle function and healthy blood vessel operation, which matters directly for performance and recovery.

How to Use Klean Athlete Calcium (Citrate)

Dose: Take 2 capsules, 1–3 times daily with a meal, or as directed by a trainer, coach, or healthcare professional. With 120 capsules per container and up to 3 servings daily, a single bottle provides 20–60 days of supply depending on your individual needs. Athletes with higher training loads or low dietary calcium intake (dairy-free, plant-based) should aim for the higher end of the dosing range.

Pro tip: Pair with Vitamin D3 to maximize calcium absorption — D3 is the key that unlocks calcium uptake in the gut.

NSF Certified for Sport, vegan-friendly, gluten-free, and non-GMO. No artificial colors, flavors, or sweeteners. Built to the same clean standard as every product in the Klean Athlete lineup.