PlainPill

Calcium Carbonate

People mainly take Calcium Carbonate for mood. Based on 4 first-hand reports and 60 meta-analyses & systematic reviews in the medical literature. Ranked #435 of 1,974 overall.

28
User score
Mostly positive
50% positive25% mixed0% negative25% unclear

Of reports that state an outcome, 67% are positive.

Clinical research
AStrong research base
60
meta-analyses
570
RCTs
9,968
papers

What Calcium Carbonate does, according to users

Of the people who reported each effect, the share who said it got better.

betterno changeworse

What the research says

Systematic reviews and meta-analyses from PubMed, with their published conclusions.

AStrong research base

3+ meta-analyses or systematic reviews and 10+ randomized controlled trials in humans. The grade measures how much human research exists — read the conclusions below for what it found.

Cochrane Database Syst Rev · 2020 · Meta-analysis / systematic review
Magnesium for skeletal muscle cramps

Conclusion: It is unlikely that magnesium supplementation provides clinically meaningful cramp prophylaxis to older adults experiencing skeletal muscle cramps. In contrast, for those experiencing pregnancy-associated rest cramps the literature is conflicting and further research in this population is needed. We found no RCTs evaluating magnesium for exercise-associated muscle cramps or disease-state-associated muscle cramps (for example amyotrophic lateral sclerosis/motor neuron disease) other than a single small (inconclusive) study in people with liver cirrhosis, only some of whom suffered cramps.

PubMed 32956536 ↗
Cochrane Database Syst Rev · 2024 · Meta-analysis / systematic review
Population-based interventions for preventing falls and fall-related injuries in older people

Conclusion: Given the very low-certainty evidence, we are unsure whether population-based multicomponent or nutrition and medication interventions are effective at reducing falls and fall-related injuries in older adults. Methodologically robust cluster RCTs with sufficiently large communities and numbers of clusters are needed. Establishing a rate of sampling for population-based studies would help in determining the size of communities to include. Interventions should be described in detail to allow investigation of effectiveness of individual components of multicomponent interventions; using the ProFaN

PubMed 38180112 ↗
Semin Dial · 2011 · Meta-analysis / systematic review
The phosphate binder equivalent dose

Conclusion: The phosphate-binding equivalent dose was then defined as the dose of each binder in g × its RPBC, which would be the binding ability of an equivalent weight of calcium carbonate. The phosphate-binding equivalent dose may be useful in comparing changes in phosphate binder prescription over time when multiple binders are being prescribed, when estimating an initial binder prescription, and also in phosphate kinetic modeling.

PubMed 21338393 ↗

Dosage people report

As stated by users — not a recommendation. Follow the label or your doctor.

500mgas reported
300mgas reported

Reported side effects

How often each side effect came up across all reports.

No side effects reported so far.

What users say

Verbatim quotes, shortened only — each links to the original discussion.

“Calcium Carbonate (seems to help too)”
Source discussion ↗
“Just 500mg of Calcium Carbonate makes me feel amazing. It's like I'm high.”
Source discussion ↗
“For me its not euphoric but calcium does help reducing muscle twitches and cramps a lot with my body while magnesium makes it worse.”
Source discussion ↗
Top discussions (3)

Other options for mood

User data from public discussions; research from PubMed. Information only, not medical advice — talk to a doctor before starting, stopping or combining anything. Data updated October 2, 2026. How we rate