Nutricost DIM Review- Will 300mg Cause Side Effects? UPDATED

nutricaste dim reviews

Nutricost DIM has positive reviews online, but can the ingredients in this supplement cause side effects?

What Does DIM Do To Estrogen?

DIM products may help alleviate side effects of estrogen dominance such as fat gain in the abdominal area and gynecomastia in men. It may also help with acne breakouts, reduce bloating, and menstrual cramps.

It should only be taken by men and women with increased estrogen levels so that they can diminish them.

Nutricost DIM Reviews

There is very little information in the Nutricost DIM Amazon listing about the product. We believe they promote their DIM for estrogen metabolism.

Although the majority of Nutricost reviews on Amazon show as positive there are many unhappy customers as well. Some reviews of DIM mention becoming very ill, hair loss, and needing to take 4 capsules per day to experience any effects.

Should You Worry About Side Effects?

If you are wondering what the side effects are; dehydration, nausea, headache, hair thinning/loss, anxiousness, and allergic reactions have been reported.

These side effects may occur if your estrogen levels are already low or if you are taking too high of a dose and discontinuing Nutricost will be necessary.

Another adverse reaction of diindolylmethane is a change in urine color. This is harmless and goes away with continued use of the supplement.

Does DIM Lower Testosterone?

It should not have an effect on lowering testosterone. Men with high estrogen levels who take DIM can actually experience the opposite and notice an increase in free testosterone which relates to increased metabolism and fat burning.

Low levels of free testosterone and higher estrogen levels in men are associated with excess body fat, reduced sex drive, depression, and erectile dysfunction. 

What Are The Ingredients?

DIM (Diindolylmethane) - 300mg

Diindolylmethane is a product of the breakdown of the phytochemical Indole 3-Carbinol (I3C for short) and helps those who have excessive levels of estrogen.

It is also an active aromatase inhibitor so it prevents the conversion of androgens such as testosterone into estrogen.

This component can be useful for removing water from the body brought on by excessive estrogen. DIM can also lead to unwanted effects though including joint pain, nausea, as well as dehydration.

BioPerine - 5mg

We see often that companies add BioPerine to their estrogen blocking supplements. They believe it increases the bioavailability of the estrogen blocker, but this is only true for B-vitamins which this product doesn't contain.

Other ingredients include veggie capsule, rice flour, and silicon dioxide. The product is gluten free, non-GMO, and suitable for vegan diets, but is not ketogenic as it contains rice flour.

How Do I Take DIM?

The serving size is 1 capsule and 120 servings per bottle. On the bottle it says take 1-2 capsules daily with water.

Nutricost cannot be cut in half to judge the strength as it is in capsule form. DIM supplements effect people differently and many times may be too strong for some people. For this reason we recommend you read our Estrohalt critique because it is a tablet that can be broken in half.

Where To Buy & What's the Price?

It is available to purchase on Amazon in the US and costs around $19. Nutricost diindolylmethane 300mg is the only milligram they sell.

At one time it was sold in Australia, but it is now no longer available. If you live in Australia and are asking yourself "what is the best brand of DIM?" we recommend Estrohalt on Amazon AU by Addrena.

There are no DIM supplements on Amazon UK as they have recently banned the ingredient from being sold.

Pros & Cons


  • Bottle will last a while if you take 1-2 per day
  • Gluten free, non-GMO, vegan
  • Easy to swallow


  • Some people may need to take more than 2 per day
  • May be too strong for some people as you cannot cut the capsule in half to first judge the strength
  • Side effects such as nausea may occur

CONCLUSION: Should You Try Nutricost?

We think some people may see results using DIM from Nutricost as they are a big brand that sells many supplements and this product has good reviews on Amazon. 

We believe there are better options such as Estrohalt as it contains an extra estrogen blocker in Indole-3-Carbinol and doesn’t contain Bioperine.

What estrogen blockers have worked for you? Let us know in the comments below.