NutriDex

The Supplement Research Compendium
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Calcium D-Glucarate

Calcium D-glucarate

Beta-glucuronidase inhibitor marketed for estrogen and toxin 'detox'.

Preliminary evidence ⏳Longevity

✚ Updated · How we grade evidence

Evidence tier
Preliminary
Research weight
Citations
8 verified / 8
Classification
Longevity
❝
What the evidence says. Graded preliminary: the beta-glucuronidase mechanism is well-characterised and dietary glucarate cuts chemically induced tumours in rodents by ~50–70%, but human data are limited to small pilot/dose-escalation studies showing only a biomarker shift (lower serum beta-glucuronidase). No RCT shows it changes estrogen-related disease, cancer risk, or any hard outcome. (Preliminary evidence: Early or small human trials; promising but not yet conclusive.)

What is Calcium D-Glucarate?

Calcium D-Glucarate (Calcium D-glucarate) is a longevity supplement used for inhibits beta-glucuronidase. NutriDex grades the human evidence as Preliminary. Calcium D-glucarate is the calcium salt of glucaric acid, sold as a 'detox' and estrogen-clearance aid. In the gut and blood it slowly releases D-glucaro-1,4-lactone, a potent inhibitor of beta-glucuronidase — the enzyme that strips glucuronide tags off estrogens and carcinogens, recycling them instead of excreting them. In rodents, dietary calcium glucarate (≈4% of diet) lowered tissue beta-glucuronidase and cut chemically induced mammary, lung, liver, and skin tumours by roughly 50–70%. Human evidence is thin: small pilot and dose-escalation studies (1.5 g up to 9 g/day) raised serum D-glucaric acid and modestly lowered serum beta-glucuronidase, and it was well tolerated. There are no randomised trials showing it lowers estrogen levels, prevents cancer, or improves any clinical endpoint. The popular 'detox' and 'estrogen balance' claims rest on mechanism and animal data, not proven human benefit.

Purported Benefits

✓Inhibits beta-glucuronidase
✓May aid estrogen clearance
✓Supports glucuronidation detox
✓Studied for cancer chemoprevention

Evidence by outcome

The same supplement can be well-proven for one use and unproven for another — here is the human evidence graded outcome by outcome.

OutcomeEvidenceEffectStudies
Beta-glucuronidase inhibitionSmall human pilot/dose-escalation studies raised serum glucaric acid and modestly lowered the enzyme; mechanism-level only. Preliminary ↑ benefit 2
Cancer chemopreventionTumor-reduction data are all rodent; MSKCC notes no human evidence it prevents or treats cancer. No Evidence — no effect 1
Estrogen clearance / detoxPopular estrogen-balance and detox claims rest on mechanism and animal data; no human outcome trials exist. No Evidence — no effect

Dosing & Compounds

Typical Dose
Commonly 500–1500 mg/day of calcium D-glucarate; tolerability trials escalated to 9 g/day, but no dose is validated for any clinical outcome.
Active Compounds
Calcium D-glucarateD-glucaro-1,4-lactone (active metabolite)D-glucaric acid

Safety & Cautions

Generally well tolerated in the small human studies done, with at most mild GI upset; long-term safety is unstudied. Because it accelerates glucuronidation/clearance, it can theoretically lower blood levels of drugs cleared by this pathway — including oral estrogens and hormonal contraceptives, and possibly other glucuronidated medications (e.g. some statins, NSAIDs, lamotrigine, morphine) — so women relying on the pill should be cautious. The calcium content adds to total calcium intake. Avoid using it to self-treat or replace screening for any cancer or hormone-sensitive condition; discuss with an oncologist if you have estrogen-sensitive cancer. Educational only — always check with your doctor or pharmacist before combining Calcium D-Glucarate with any medicine.

Key Studies

Review Ayyadurai 2023 ✓ Full text
Computational systems-biology model: D-glucaric acid modeled to support liver detox via reduced ROS, deconjugation, hepatocyte apoptosis and beta-glucuronidase.
Review Walaszek 1997 ✓ PubMed
Oral D-glucarate salt was absorbed and converted in vivo to D-glucaro-1,4-lactone, a potent beta-glucuronidase inhibitor; framed potential cancer-prevention use.
Review Heerdt 1995 ✓ PubMed
Pilot/rationale report: calcium glucarate proposed as a breast-cancer chemopreventive via altered estrogen milieu and carcinogen detox; no efficacy outcomes.
Review Walaszek 1986 ✓ PubMed
Dietary 4% calcium glucarate reduced DMBA-induced rat mammary tumour incidence to ~30% of controls by 28 weeks (promotion-phase inhibition).
Review Walaszek 2004 ✓ PubMed
Mechanism review (Chest): D-glucaro-1,4-lactone detoxifies glucuronidated carcinogens; low serum glucaric acid marks cancer patients and rodents with tumours.
Review Oredipe 1987 ✓ PubMed
Calcium glucarate suppressed promotion of diethylnitrosamine-initiated altered hepatic foci in rats, consistent with beta-glucuronidase inhibition.
Review Dwivedi 1990 ✓ PubMed
Single dose (4.5 mmol/kg) cut beta-glucuronidase ~57% in serum and 37–44% in liver/lung/intestine microsomes in rodents.
Review MSKCC monograph ✓ Source
Memorial Sloan Kettering: lab/animal data only; 'has not been shown to treat or prevent cancer in humans'; one small human study, well tolerated.
8 sources cited · 8 verified Search all studies on PubMed ↗

Common questions about Calcium D-Glucarate

What is Calcium D-Glucarate used for?

Calcium D-Glucarate is most often taken for Inhibits beta-glucuronidase, May aid estrogen clearance, Supports glucuronidation detox, Studied for cancer chemoprevention. Beta-glucuronidase inhibitor marketed for estrogen and toxin 'detox'.

Does Calcium D-Glucarate work — what does the evidence say?

Preliminary evidence. Early or small human trials; promising but not yet conclusive. Calcium D-glucarate is the calcium salt of glucaric acid, sold as a 'detox' and estrogen-clearance aid. In the gut and blood it slowly releases D-glucaro-1,4-lactone, a potent inhibitor of beta-glucuronidase — the enzyme that strips glucuronide tags off estrogens and carcinogens, recycling them instead of excreting them. In rodents, dietary calcium glucarate (≈4% of diet) lowered tissue beta-glucuronidase and cut chemically induced mammary, lung, liver, and skin tumours by roughly 50–70%. Human evidence is thin: small pilot and dose-escalation studies (1.5 g up to 9 g/day) raised serum D-glucaric acid and modestly lowered serum beta-glucuronidase, and it was well tolerated. There are no randomised trials showing it lowers estrogen levels, prevents cancer, or improves any clinical endpoint. The popular 'detox' and 'estrogen balance' claims rest on mechanism and animal data, not proven human benefit.

What is the typical dose of Calcium D-Glucarate?

Commonly 500–1500 mg/day of calcium D-glucarate; tolerability trials escalated to 9 g/day, but no dose is validated for any clinical outcome.

Is Calcium D-Glucarate safe? Any cautions or side effects?

Generally well tolerated in the small human studies done, with at most mild GI upset; long-term safety is unstudied. Because it accelerates glucuronidation/clearance, it can theoretically lower blood levels of drugs cleared by this pathway — including oral estrogens and hormonal contraceptives, and possibly other glucuronidated medications (e.g. some statins, NSAIDs, lamotrigine, morphine) — so women relying on the pill should be cautious. The calcium content adds to total calcium intake. Avoid using it to self-treat or replace screening for any cancer or hormone-sensitive condition; discuss with an oncologist if you have estrogen-sensitive cancer.

How many studies support Calcium D-Glucarate?

NutriDex cites 8 sources for Calcium D-Glucarate, graded "Preliminary".

Cite this page
APA

Peh, D. (2026). Calcium D-Glucarate (Calcium D-glucarate): Benefits, Dosage, Side Effects & Evidence. NutriDex — The Supplement Research Compendium. Retrieved 26 Jun 2026, from https://nutridex.info/s/calcium-d-glucarate

BibTeX
@misc{nutridex_calcium_d_glucarate,
  author       = {Peh, Daryl},
  title        = {Calcium D-Glucarate (Calcium D-glucarate): Benefits, Dosage, Side Effects \& Evidence},
  year         = {2026},
  howpublished = {NutriDex --- The Supplement Research Compendium},
  url          = {https://nutridex.info/s/calcium-d-glucarate},
  note         = {Reviewed by Dr Daryl Peh, MBBS Singapore, MMed FM. Accessed 2026-06-26}
}

For medical claims, citing the underlying primary studies linked above is preferred. NutriDex is an educational reference, not medical advice.

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