Weider Prime for Men is a testosterone (T) supplement sold by a company called Weider Global Nutrition. The brand describes their product as a “premium testosterone support formula” and highlights some of its active ingredients that are clinically tested for T support.
But does Weider Prime contain research-backed ingredients for supporting T levels? Does it contain any unhealthy ingredients? Will it cause side effects? And is Weider Prime better or worse than popular T-boosters like T-Hero?
In this article we’ll answer all of these questions and more, as we analyze the ingredients in Weider Prime based to give our take on whether or not the supplement is likely to be effective for boosting T, and whether or not it's healthy.
We'll also highlight some questionable marketing claims on the brand's website, discuss the risk of side effects, and compare Weider Prime to other popular T-boosters to pick our winners.
Key takeaways:
- May support T levels based on ashwagandha inclusion & dose
- No unhealthy additives
- Brand fixed misleading clinical claim after our call-out
- We do not currently recommend Weider Prime
Ingredient Analysis
Weider Prime contains a large number of ingredients so we’ll break them down into sections.
The vitamin and mineral ingredients are shown below:
Zinc is a mineral that may increase T levels if taken at doses much higher than that in Weider Prime, according to a medical review published in the Aging Male journal.
We cannot identify any convincing medical research suggesting that the other vitamins and minerals in this complex benefit T levels.
The botanical ingredients in Weider Prime are shown below:
Diindolylmethane was shown to cause degeneration of testicular tissues in a 2016 animal study, albeit at much higher equivalent doses than that included in this supplement.
We can’t find any evidence that this ingredient increases or supports T levels and don't understand why it would be included in a T-boosting supplement.
Ashwagandha extract is clinically shown to increase T levels in men, and as we documented in our Ageless Male Max reviews article, a dose over 600 milligrams (mg) like what’s in Weider Prime has been shown to be effective.
Cordyceps extract has been shown in several clinical trials (source 1, source 2) to optimize T levels in animals, although we can’t find any studies proving the same effects in humans.
Piperine is used to increase absorption of other botanical ingredients.
The inactive ingredients in Weider Prime are considered non-toxic and are shown below:
Overall, we consider Weider Prime potentially effective for supporting optimal T levels in men. It contains one active ingredient we consider effectively dosed (ashwagandha extract), and one other active ingredient with some interesting preliminary research but that we can’t find direct evidence for in humans (cordyceps extract).
Questionable Marketing Claims
As shown below, the product page on Weider’s website has a hyperlink with the text “Read the clinical study”:
This strongly suggests that Weider Prime has been clinically tested, however the supplement does not appear to have been clinically tested. That link directs users to a page with clinical studies on some of the ingredients in Weider Prime, and we consider this marketing messaging to be confusing and unfair to consumers.
Some of the studies cited by Weider do not even show that the included ingredients support testosterone in otherwise healthy adults.
The clinical trial cited to support the inclusion of chromium does not even include the word “testosterone” once. It’s a study on metabolic changes including weight loss from chromium supplementation, not on the effects of testosterone changes.
The medical study on zinc supplementation did not show that zinc supplementation increased T levels in otherwise healthy adults, just in those already deficient in zinc. This suggests that men with low testosterone should get their zinc levels tested, not that they should take zinc supplements without knowing their current level.
There are no research citations on the product page or on this Clinical Studies page of the brand’s website to support the majority of the active ingredients in the formulation, including vitamin B6, vitamin B12 and diindolylmethane.
Does Weider Prime Cause Side Effects?
Weider Prime doesn’t appear to have been studied in any clinical trials, so it’s challenging to say whether or not the supplement is likely to cause side effects.
However, we can make an educated guess based on its ingredients.
Although we consider the practice of including high doses of vitamins and minerals in supplements to be questionable, we do not believe that this is likely to cause significant side effects.
Ashwagandha extract has a highly favorable side effect profile according to a 2021 clinical trial, and does not appear to cause any serious side effects.
We already noted that the inactive ingredients in these supplements are likely safe and non-toxic.
Overall, we consider Weider Prime unlikely to cause side effects in otherwise healthy adults. That being said, consumers concerned about side effects should clear its use with their doctor.
Weider Prime vs. Popular T-Boosters
Here's how Weider Prime stacks up against other popular T-boosting supplements in terms of potential effectiveness and healthiness, in our opinion:
T-Hero
Very similar formulation to Weider Prime.
Our Product Tester used this product for one month and experienced no effects.
Winner: Weider Prime
Roman Testosterone Support
Like Weider Prime, this supplement contains a research-backed ashwagandha dose.
However, it also contains an active ingredient that can cause significant digestive upset, as we discussed in our Roman Testosterone Support review article.
We consider Weider Prime less likely to cause side effects.
Winner: Weider Prime
Test Boost Max
This formulation is less impressive in regard to potential efficacy.
No unhealthy additives in either formulation, so Weider Prime gets the (slight) edge from a potential effectiveness perspective.
Winner: Weider Prime
Our Testosterone Support Picks
MBG Vitamin D3 Potency+ is our top value testosterone support pick.
Vitamin D3 supplementation has been clinically shown to increase total testosterone levels by over 25%.
Performance Lab Magnesium is our top mineral testosterone support pick.
Magnesium is a mineral that is clinically shown to increase free and total testosterone in athletes and in sedentary individuals.
All of the products recommended in this section are free of ingredients that we consider unhealthy.
Weider Prime Pros and Cons
Pros:
- May support healthy T levels
- Contains research-backed ashwagandha extract dose
- Inactive ingredients are likely safe
- Cordyceps extract may have metabolic health benefits
- Favorable Amazon reviews
- Unlikely to cause side effects
Cons:
- Unclear if added vitamins and minerals increase T outside of deficiency state
- Brand website charges for shipping
- Brand website contains questionable marketing claims
- We can only identify one active ingredient at a research-backed dose (ashwagandha)
- Doesn’t appear clinically tested
