Nature's Sunshine Indole-3-Carbinol Review
Nature's Sunshine Indole-3-Carbinol is sold as a Vegcap product with 60 capsules, listed on the page as a 30 day supply with 30 servings. The page describes the product as a nutrient from cruciferous vegetables, such as broccoli, that supports immune health and protects hormone balance. It also states that the product helps with detoxification. The headline benefit shown on the page is support for hormonal balance. The product page lists two supporting claims: that it supports immune health and hormonal balance, and that it induces detoxifying enzymes. The How it Works section explains that the formula supplies indole-3-carbinol in a proprietary blend of broccoli flowers, which the page calls a cruciferous vegetable. It states that indole-3-carbinol is one of the active compounds in cruciferous vegetables and that it supports cell health by supporting immune health, balancing hormone metabolism and inducing detoxifying enzymes. The Recommended Use section directs the reader to take 2 capsules daily with a meal. The page lists the ingredients as broccoli flowers, indole-3-carbinol and broccoli sprouts. A Certifying Quality section for the latest batch reports that the product passed Mineral and Heavy Metal Testing, Potency and Identity Testing, Pesticide and Safety Testing, and Microbial Testing. A Supplement Facts label is available through the View supplement facts link on the page. The page price is shown as $58.55 for a one-time purchase, or $43.90 with a subscription that the page says saves 25 percent. The page also carries a 90 day money-back guarantee and a share option. Product statements on the page note that they have not been evaluated by the Food and Drug Administration and that the products are not intended to diagnose, treat, cure or prevent any disease. The page shows three reviews through its review section, but it does not display an average star rating, a star breakdown or written review text in the scraped content. Related products shown on the page include UnPhased, Wild Yam, C-X and Nature's Prenatal.
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Study, Trial or Testing Result Summary
Members OnlyHuman studies
This product lists indole-3-carbinol, broccoli flowers and broccoli sprouts. The label gives only a 960 milligram proprietary blend, so the amount of each ingredient, including indole-3-carbinol, is hidden. It is not possible to say whether any ingredient reaches a dose used in research. For the goal of supporting women's hormones, no human studies on these ingredients were provided for this review, so there is no study evidence here to say whether it helps, does nothing, or causes harm. The only feedback is a small number of store ratings, all positive. A few readable comments describe it as working for hormone balance or premenopausal symptoms, and one reviewer linked a severe cycle-related migraine to stopping it. These are personal accounts from a handful of buyers, not controlled results, and they cannot show how well the product works in general. Until human studies on this goal are available, treat it as an unproven option. Speak with a health professional before using it, especially if you have a hormone-sensitive condition or take other medicines. Animal and cell studies are never counted.
Review Totals and Summary
Members Only14 reviews · 100% positive
Across the one store covered, Caring Sunshine, the product shows 14 ratings in total, and the themes below come from the eight written reviews that could be read on its page. Only the capsules are covered here, and no other forms of the product appeared in the feedback. Praise centres on the product working. Seven of the eight reviews give five stars and one gives four, and nothing is rated below four. Several reviewers simply say it works for them, with comments such as "Works for me," "Working very good," and "I have been taking these and it works well." One reviewer says it makes them feel good and balanced. Another says their nurse practitioner recommended it for premenopausal symptoms and calls it a great product. The most specific account of effect comes from a reviewer who uses it to balance hormones. After stopping for a while, they had a cycle-linked migraine so bad they could not keep a med down and stayed in bed for 16 hours. That suggests they link the severe migraine to having stopped, though this is the reviewer's own interpretation rather than anything proven. The retailer also gets credit. The most detailed review calls Caring Sunshine's customer service very helpful, says the order arrived within two days, and notes that the price matched what the reviewer paid on a Nature's Sunshine subscription. That reviewer now orders from Caring Sunshine because it is fast and easy and avoids keeping up with a monthly subscription. So delivery speed, service, price parity and convenience are the value points mentioned. There are no complaints about the capsules in the written feedback, and no critical comments at all. Two reviews give no usable detail: one contains only the product name and the other only question marks. As for who it seems to suit, the reviews point to women looking for hormone balance or help with premenopausal symptoms, plus people who want to buy without a recurring auto-ship subscription. These are inferences from a few comments, not claims made across the board. Several things are not covered. Reviewers do not describe capsule size, taste, or side effects, so there is nothing to report on those. The written reviews are short and mostly general, so treat them as individual testimonials rather than evidence of how the product performs for everyone. The page is also a retailer listing that sells the product alongside its own subscription pricing, which is worth bearing in mind when reading uniformly positive comments. With only eight written reviews readable, the picture is encouraging but not detailed.
Biohacker Summary
Members Only8 of 10 recommend it
The panel said nothing about indole-3-carbinol itself, so everything here is about broccoli, a smaller ingredient in this product. Most of the ten recommend or use broccoli, mainly for sulforaphane, which they link to the body's own detox pathways, and for fiber. Several prefer broccoli sprouts or sprout and seed extracts, and a few suggest pairing broccoli with mustard powder or letting it sit after chopping, with one citing 200 grams of cooked broccoli plus one gram of mustard powder. Cautions came from two: one said most broccoli supplements hold glucoraphanin rather than active sulforaphane, so some people may absorb almost nothing, and another said adult broccoli can affect the thyroid and gut, and that he once called sprouts a waste of time before later taking extracts.
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Dr. Eric Berg · Broccoli · recommends
- Dr. Eric Berg recommends pairing broccoli with mustard seeds to boost beneficial plant compounds.
- Suggests pairing broccoli with mustard for better absorption.
- Recommends broccoli sprouts for supporting heavy metal detoxification.
- Dr. Eric Berg suggests that broccoli sprouts are the best food for your liver.
- Notes that broccoli has a glycemic index of basically one.
- Recommends consuming broccoli with mustard to enhance sulforaphane.
- Recommends broccoli sprouts as one of ten foods that help lose belly fat.
- Recommends broccoli as a quercetin-rich food that supports a healthy inflammatory response and helps protect cells from oxidative stress for kidney health.
- Notes that broccoli has a glycemic index of one.
- Uses broccoli as an example, stating that if it can help prevent a disease, it would be considered a drug by the legal definition.
Dr. Rhonda Patrick · Broccoli · recommends
- States that sulforaphane, found in broccoli, activates enzymes that make plastic-associated chemicals water soluble for excretion.
- Broccoli sprout extracts increased excretion of airborne carcinogens like benzene by about 60% within 24 hours.
- States that broccoli sprouts are a concentrated source of the sulforaphane precursor glucoraphanin and are one of the best sources for boosting cellular defenses.
- Sulforaphane, found in especially high amounts in broccoli sprouts, activates NRF2, which binds to toxins and makes them water-soluble for excretion.
- Mentions that sulforaphane-rich broccoli sprout extracts boosted excretion of airborne carcinogens like benzene and acrolein by ~60% within just 24 hours.
- Recommends daily intake of sulforaphane-rich foods like broccoli, noting that human studies show it reduces oxidative DNA damage and boosts detoxification.
- Recommends broccoli sprouts as the best source of sulforaphane, containing about 100 times more of its precursor than mature broccoli, and suggests consuming 45 to 100 grams a day.
- States that broccoli sprouts are a great source of sulforaphane precursor.
- Recommends consuming freshly crushed broccoli sprouts for the best effect, as they contain glucoraphanin which converts into sulforaphane.
- For those aiming to increase sulforaphane intake, dietary sources like broccoli sprouts are excellent, providing some of the highest concentrations of glucoraphanin.
Thomas DeLauer · Broccoli · recommends
- Recommends eating steamed broccoli with brown mustard powder to activate sulforaphane, noting that 200g of cooked broccoli with one gram of mustard powder increased sulforaphane metabolites almost 5x, acting as a master switch for detox pathways.
- Eats vegetables like broccoli, emphasizing chewing through its cellular structure rather than consuming just juices.
- Recommends broccoli sprouts for lung health, as sulforaphane activates Nrf2 and can be up to 100 times more potent than mature broccoli.
- Includes broccoli for its sulforaphane, which activates Nrf2 to drive antioxidant and detox pathways, advising to chop and let it sit for ten minutes before cooking.
- Recommends consuming a handful of raw broccoli sprouts, which contain 100 times more sulforaphane than mature broccoli, to activate the NRF2 pathway and help excrete chemicals like BPAs and phthalates.
- Usually eats steak, broccoli, and blueberries for dinner.
- Recommends broccoli sprouts for detoxing plastic chemicals like BPA and BPS, noting they have 100 times more glucoraphanin, the precursor to sulforaphane, than mature broccoli.
- Recommends broccoli for its sulforaphane precursors and fiber, acknowledging its unique qualities despite not being extremely nutrient-dense.
- Recommends broccoli sprouts for NRF2 activation, which increases glutathione synthesis and phase 2 detoxification.
- Recommends broccoli as a source of soluble fiber for keto.
- Recommends consuming indole-3-carbinol, noting that a 400 mg dose was effective in a study for improving estrogen ratios.
- Recommends indole-3-carbinol (DIM), found in cauliflower and Brussels sprouts, as a powerful estrogen modulator that helps metabolize bad estrogens.
- Explains that cruciferous vegetables contain indole-3-carbinol, which in turn contains DIM, and DIM allows the liver to process estrogen better.
- Mentions that DIM is derived from indole-3-carbinol, also known as IC3, which works with the liver to metabolize estrogen.
Siim Land · Broccoli · uses
- States that broccoli is one of the boring foods from which he gets most of his fiber.
- Lists broccoli as a food high in spermidine, providing 3 mg per 100g, which he consumes for longevity.
- Lists broccoli sprouts as a top food for sulforaphane, containing 30-100 mg/100g.
- Lists broccoli sprouts as a top food for sulforaphane, noting they contain 30-100 mg/100g.
- Recommends broccoli sprout extract as a component in a targeted detox for boosting NRF2 signaling, which is the natural endogenous antioxidant pathway signaling on a genetic level.
- Recommends broccoli as a food to hit the daily dose of polyphenols for longevity and anti-aging.
- Recommends having about 200g of broccoli with a bit of broccoli sprouts.
- Notes that Dave Pasco is stacking sulforaphane and myrosinase with a broccoli and cruciferous blend, implying redundancy.
- Includes broccoli in their diet for fiber.
- Consumes broccoli post-workout for an antioxidant and fiber boost.
Dave Asprey · Broccoli · recommends
- Mentions that the guys from Broccolite talked about sulfation and make a broccoli extract with good data for raising glutathione inside of cells and the rate of glucuronidation.
- States that broccoli sprouts are a waste of time because many seeds don't make sulforaphane, and it's a 'crap shoot' whether they will.
- Eats some broccoli.
- Takes broccoli extracts because he hates broccoli but finds it extremely useful.
- Dave Asprey explores why adult broccoli can block thyroid function and cause gut issues.
- Used to eat 2.5 pounds of broccoli in a day as a vegan and raw vegan, but no longer does so due to the presence of toxins and the impracticality of consuming such large quantities for benefit.
- Has noticed a massive difference from using Brock Elite, a broccoli extract containing sulforaphane activated by another chemical, which performs all three stages of detoxification.
- Recommends broccoli as a food with more fiber than oatmeal, advising to cook it to reduce negative effects on the thyroid.
- Warns that if one's gut bacteria produce a lot of sulfide, they should not eat broccoli, cabbage, or Brussels sprouts, as these foods contain sulfates that will increase sulfide production and cause inflammation.
- Mentions a study from China where a broccoli sprout beverage helped people clear toxins like benzenes quickly.
Dr. Mark Hyman · Broccoli · uses
- States he was using broccoli seed extract to stimulate the NRF2 pathway and open up detox.
- Recommends broccoli as a vegetable that contributes to fiber intake.
- Makes steamed broccoli with lemon, garlic, olive oil, salt, and pepper, advising not to overcook it to avoid mushiness.
- Recommends foods from the broccoli family, including broccoli, collards, kale, cabbage, and Brussels sprouts, as great foods that upregulate the body's own detoxification pathways.
- Notes that broccoli sprouts contain about a hundred times more glucoraphanin, the precursor to sulforaphane, than mature broccoli, and is trying to grow them.
- Recommends broccoli as a food that boosts the body's own detox enzymes like glutathione.
- Recommends broccoli sprouts as real longevity medicine.
- Used to sprout broccoli but no longer does due to being busy, instead opting for a sulforaphane supplement.
- Recommends 5-day-old broccoli sprouts as a huge NRF2 activator and the most bioavailable source of sulforaphane, but advises cycling them to prevent the body from shutting down the defense mechanism.
- States that broccoli sprouts are one of the most powerful foods for boosting glutathione and detoxification.
- Notes that indole-3-carbinol was among the compounds identified to regulate inflammation in a clinical trial.
- States that indole-3-carbinol, a compound from the broccoli family, can raise protective 2-estrogens, prevent, and even reverse cervical cancer.
- Uses indole-3-carbinol to help with the effects on hormone metabolism.
- Uses indole-3-carbinol to help with the effects on hormone metabolism.
Ben Greenfield · Broccoli · warns
- Warns that most broccoli supplements do not contain active sulforaphane, but rather glucoraphanin, which has variable conversion rates in the gut, meaning users might absorb almost nothing.
- Warns that not all broccoli seeds contain glucoraphanin to produce sulforaphane, citing an experience where most sources they tested did not.
- Mentions broccoli sprouts as an example of a plant that, in large amounts, can cause oxidative stress, but in small amounts, can be beneficial.
- Ben's favorite sprouts are broccoli, due to their umami flavor and sulforaphane benefits.
- Used the "Broccoli & Friends" mix, a blend of high-germination broccoli, alfalfa, radish and clover sprouting seeds, with a glass mason jar sprouting method for 5 days.
- Recommends indole-3-carbinol, found in cruciferous vegetables and supplementation form, for supporting phase one and phase two liver detoxification pathways.
- Recommends that broccoli, brussel sprouts, and cabbage be avoided or, if consumed, at least steamed or sautéed to neutralize some of the effect of glucosinolates, which can be converted into sulfide gas by microbes.
- Recommends avoiding broccoli and Brussels sprouts, or at least steaming or sautéing them, if one has a specific profile with high sulfide production and high fermenters, as they can exacerbate discomfort.
- Contrasts a ribeye steak with a plate of soaked and sprouted quinoa, fermented sourdough bread, sweet potato, and a broccoli sprout smoothie, suggesting the latter is survival food.
- States that broccoli is shown to decrease the risk of hearing loss.
- Recommends chopping broccoli into small pieces about 90 minutes prior to cooking.
- Notes that indole-3-carbinol, found in cabbage, broccoli, and Brussels sprouts, supports Phase 2 liver detoxification.
- Recommends purchasing indole-3-carbinol over DIM because it is more bioavailable and acts better for liver detoxification and estrogen metabolism, suggesting a dosage of around 400 milligrams a few times a day, totaling 1000 to 1500 milligrams.
- Ben states that Indole-3-carbinol, found in cruciferous vegetables, is very important for phase 2 detoxification.
Andrew Huberman · Broccoli · neutral
- Notes that broccoli sprouts have up to 100 times more sulfurophane than broccoli and activate glutathione in the brain.
- Mentions that broccoli is oddly a good source of protein.
- Suggests using steamed broccoli from the freezer in a chocolate smoothie because it has very little taste.
- Despises broccoli because he remembers his mother forcing him to eat it.
- Recommends broccoli sprouts, noting they have up to 100 times more sulforaphane than broccoli and are powerful activators of the Nrf2 pathway, which is involved in detoxification and glutathione production.
- Recommends eating broccoli to reduce vulnerability to endocrine or hormone disruption.
- Andrew Huberman mentions that Dr. Zuker despises broccoli because he remembers his mother forcing him to eat it, despite it being the same sensory experience for others who like it.
Peter Attia · Broccoli · recommends
- Recommends broccoli as a fibrous carbohydrate source, noting it is about one-third fiber.
- States that broccoli is about one-third fiber and is one of the foods he eats every day.
- Consumes quite a bit of broccoli as a source of fiber.
- Mentions that broccoli has not been linked with any real increased or decreased risk for developing prostate cancer in decent follow-up studies.
- Notes that products in grape skin, broccoli, and tomato have not been linked with any real increased or decreased risk for developing prostate cancer.
- Includes quite a bit of broccoli as a source of fiber in his diet.
Bryan Johnson · Broccoli · uses
- Uses broccoli and recommends letting it sit for 40 minutes after chopping before cooking to activate the enzyme myrosinase, which unlocks sulforaphane, a strong anti-cancer compound with potential sugar-lowering and detoxifying properties.
- Includes 250g of broccoli in his Super Veggie for antioxidants, bowel health, and fiber.
- Mentions broccoli as an ingredient in Bronco Max, which he uses.
- Includes over 300 grams of pureed broccoli in his daily 'Super Veggie' breakfast for its nutrient density.
- Uses broccoli in his Super Veggies.
RAL Summary
Members OnlyTier 4 for Hormone Balance for Women
No human studies on this goal were provided for its ingredients, and the dose of indole-3-carbinol is hidden in a proprietary blend. With only 14 ratings, even though all are positive, the evidence is thin and fits the emerging tier.
- Emerging: not enough evidence to rank higher yet.
- No human studies on this goal for its ingredients.
More Details
Members OnlyBody systems · Combine with · Possible side effects
Body systems: Endocrine system, Reproductive system
Combine with: For estrogen metabolism support, I3C pairs well with DIM (diindolylmethane), calcium-D-glucarate to aid estrogen glucuronidation and elimination, and sulforaphane or broccoli sprout extract for phase II detox. B-complex vitamins (especially methylated B6, B12, folate) and magnesium support methylation and estrogen clearance. Milk thistle or NAC supports liver function. If the broader interest is cellular and DNA repair, consider adding NAD+ precursors (NMN or nicotinamide riboside), resveratrol or pterostilbene, quercetin, CoQ10, and alpha-lipoic acid. Consult a healthcare provider before use, especially with hormone-sensitive conditions, hormonal medications, or drugs metabolized by CYP1A2.
Possible side effects: No major side effects reported.
Supplement Facts
Proprietary Blend 960 mg
| Proprietary Blend | 960 mg | † |
Other ingredients: Capsule, Vegetable Magnesium Stearate, Silicon Dioxide.
Directions: Recommended Use: Take 2 capsules daily with a meal.
Barcode (UPC) 099904015067 · Label source: NIH label database · Report a label change
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Graded November 6, 2026 by the Reverse Age Lab evidence engine, from human studies, real reviews and our biohacker panel. How we grade. Is this medical advice? No. Rala organizes the published evidence; go over any change with your doctor, especially if you take meds.
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