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DIM3X Review — Ingredients, Evidence & Verdict

Written by the WellnessChecked Editorial Team. We checked the formula, the guarantee terms and the published research on its ingredients.

Scroll down to read our full analysis, including ingredient breakdown, pros & cons, and where to buy safely ↓

📋 Editorial & Affiliate Disclosure: This review was written by the WellnessChecked editorial team. We only cover products from brands we have affiliate relationships with, so our top picks are the best of the products we cover, not of every product on the market. We earn a commission if you purchase through our links — paid by the manufacturer at no extra cost to you. We aim to describe every product accurately, including its limits. Read about our methodology → | Full disclaimer →

DIM3X is a one-a-day supplement providing 200 mg of DIM (diindolylmethane), an amount within the 100–300 mg range used in human studies, plus AstraGin, BioPerine and vitamin E. DIM shifts estrogen metabolism in human studies, mostly in women. We found no human trial showing it raises testosterone or helps symptoms in men, and no trial of DIM3X itself. DIM interacts with tamoxifen. It comes with a 67-day money-back guarantee.

📚 Key reference: In a small 2008 dose study, single doses of absorption-enhanced DIM up to 200 mg were well tolerated; 300 mg added side effects without raising blood levels. Reed et al., 2008

No trial of DIM3X itself has been published. In human studies, mostly in women, DIM at 100–300 mg a day shifts estrogen metabolism; the largest trial (130 women on tamoxifen, 12 months) also raised SHBG, which binds testosterone. We found no human trial showing DIM raises testosterone in men.

Read the MSK summary →

DIM3X provides 200 mg of DIM a day, an amount used in human studies, which may suit a man whose doctor wants to try shifting estrogen metabolism. There is no trial of the product and no good evidence that DIM raises testosterone in men, and DIM interacts with tamoxifen and can raise SHBG.

200 mg a day, within the 100–300 mg range used in human DIM studies. Higher is not necessarily better: in a 2008 dose study, 300 mg added side effects without raising blood levels. DIM shifts estrogen metabolism in human studies, mostly in women; evidence in men is limited.

BioPerine has improved absorption of some nutrients in supplier-funded studies; it has not been tested with DIM. Amount not stated.

Has supplier-funded absorption studies on other nutrients, not on DIM. Amount not stated.

Stated as 134% of the Daily Value. There's no evidence it adds to DIM's effects.

📋 Our Editorial Concerns

In the interest of balance, here are the limitations of DIM3X that we think buyers should know:

• →No clinical trial of DIM3X itself
• →No human trial shows DIM raises testosterone in men; DIM raised SHBG in a 12-month trial, which can lower free testosterone
• →Priced above many similar products; the price is not matched by stronger evidence
• →The guarantee terms don't say they cover purchases from other sellers, and its return wording is inconsistent

⚠️ Important: Results vary. There is no trial of DIM3X, so these points describe ingredient studies, not a promise. The 67-day money-back guarantee has conditions (see below).

🔬 What the Evidence Actually Shows

• Trial of the product itself: None published.
• Ingredients: DIM at 100–300 mg a day shifts estrogen metabolism in human studies, mostly in women, and raised SHBG in the largest trial. No human trial shows DIM raises testosterone or improves symptoms in men. AstraGin and BioPerine have supplier-funded absorption studies on other nutrients, not on DIM.
• Doses on the label: 200 mg DIM per daily capsule; vitamin E 134% DV. AstraGin and BioPerine amounts not stated.
• Guarantee: 67 days from receipt of order; purchase price minus shipping. The official page conflicts on whether to return unused product or empty bottles, so confirm with customer service.

Sources: Reed et al. (2008), Cancer Epidemiol Biomarkers Prev: DIM dose study · Memorial Sloan Kettering: Diindolylmethane · DIM 3X label listing (HelloPharmacist/TRC)

Read next: DIM supplement guide · Does DIM3X work?

⚠️ Who Should NOT Take DIM3X

• ✗Anyone taking tamoxifen or being treated for a hormone-sensitive cancer, unless their oncologist approves
• ✗Anyone pregnant, breastfeeding or trying to conceive
• ✗Anyone taking tamoxifen, hormone therapy, birth control pills or CYP1A2-cleared drugs (such as clozapine, theophylline or tizanidine) without their doctor's approval
• ✗Anyone with a history of blood clots or stroke, unless a doctor says it's OK
• ✗Anyone under 18 years of age

This list isn't complete. Check with a doctor or pharmacist before taking any supplement.

Where to Buy DIM3X Safely

We suggest buying from the official website, so you can:

• ✓ Qualify for the 67-day money-back guarantee (it only covers orders from the official site)
• ✓ Check the current label and dose
• ✓ See multi-buy pricing

Visit Official Website →    Check Latest Pricing →

*Individual results vary. Not intended to diagnose, treat, cure or prevent any disease. These statements have not been evaluated by the FDA. Full disclaimer →

🛡️ Final Verdict: DIM3X

Please note: This content is for informational purposes only and does not constitute medical advice. Always consult a qualified healthcare professional before starting any supplement. Individual results vary. *Not evaluated by the FDA. Not intended to diagnose, treat, cure or prevent any disease.

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