Calcium D-Glucarate
Supports the body's ability to actually excrete used estrogens (and other toxins) by inhibiting beta-glucuronidase — the enzyme that 'reactivates' compounds the liver wanted to get rid of.
Strong mechanism evidence (beta-glucuronidase inhibition is well-documented). Moderate clinical evidence for estrogen-driven conditions (fibrocystic breasts, breast cancer prevention adjunct). Animal models show cancer-prevention effects. Effects: 4–12 weeks.
Once the liver tags a hormone or toxin for excretion (by attaching a glucuronic acid molecule — Phase II glucuronidation), it travels through the bile to the gut. There, gut bacteria produce beta-glucuronidase, which can cleave the tag and send the compound back into circulation — a kind of detox-undo. Calcium D-glucarate inhibits beta-glucuronidase, allowing the body to actually finish the job of clearing estrogens and other compounds. It's the downstream partner to DIM, which works on the upstream metabolism step.
- Form
- Calcium D-Glucarate capsules.
- Dose
- 500–1,500 mg/day. Typical doses are 500 mg 2–3x daily.
- Timing
- With food. AM and PM split for higher doses.
- Schedule
- Daily.
- Side effects
- Generally very well-tolerated. Mild GI upset, dry mouth occasionally.
- Interactions
- Medications cleared via glucuronidation (lorazepam, morphine, certain anti-virals, acetaminophen) — calcium D-glucarate may accelerate clearance, lowering blood levels.
- Contraindications
- Pregnancy / breastfeeding (limited data). Otherwise none significant.
- Lab markers
- Urinary estrogen metabolites (DUTCH test). Not routinely needed for general use.
- Food sources
- Oranges, apples, grapefruit, broccoli, brussels sprouts, lettuce — contain glucaric acid but in much smaller amounts than supplements deliver.
Pairs with
DIM — upstream + downstream estrogen support. Sulforaphane (additional Phase II support). Milk thistle / silymarin (liver phase support).
within Hormone precursors & modulators