Quick Verdict
Opti Men is a decent product containing solid doses of vitamins, minerals, and other natural compounds that can deliver the main benefits you can expect from a multivitamin.
However, the price is overinflated by the inclusion of many elements, which are almost entirely ineffective due to their low doses.
GNC Mega Men also delivers lots of vitamins and essential nutrients to the body, but the manufacturer has gone overboard with the doses of many, which leads to nasty side effects way too often.
Instead, you can try Prime Male T-vitamins. This comprehensive multivitamin formula supports not only general health but also men’s specific needs much better than Opti Men while costing the same.
| Feature | Winner |
|---|---|
| Ingredients | Opti Men |
| Dosage | GNC Mega Men |
| Effectiveness | Draw |
| Third-Party Testing | Draw |
| Clinical Research | GNC Mega Men |
| Side Effects | Draw |
| User Reviews | Opti Men |
| Price | GNC Mega Men |
Quick Verdict
Based on my testing and ingredient breakdown, neither Opti Men nor GNC Mega Men Multivitamin is as effective as Prime Male T Vitamins.
T-Vitamins are a fantastic immune system support supplement. They also support protein synthesis, nervous system functions, cellular energy production, and pre-existing medical conditions.
They also support eye and brain health and hair growth.
What Is Opti Men
Opti-Men is a multivitamin supplement developed by Optimum Nutrition, a well-known company that produces high-quality nutritional products for athletes and fitness enthusiasts. Founded in 1986, Optimum Nutrition is noted for its commitment to rigorous testing and quality control.
Opti-Men contains over 75 active ingredients, including essential vitamins, minerals, amino acids, and herbal extracts.
This formula improves athletic performance, immune function, and overall health by combining essential nutrients like vitamin D, vitamin C, zinc, magnesium, antioxidants, and phytonutrients.
Opti-males is geared at active men, including athletes and fitness enthusiasts, with the purpose of boosting performance, recovery, and overall well-being. It’s also ideal for guys who wish to supplement their diets and maintain good physical and mental health.
You can read my full Optimum Nutrition Opti Men review here.
What Is GNC Mega Men
General Nutrition Centers (GNC) is a leading retailer specializing in health and nutrition-related products. Founded in 1935, GNC has grown to become a globally recognized brand known for its commitment to providing high-quality supplements, vitamins, minerals, and herbal products.
One of GNC’s flagship products is the Mega Men multivitamin line, formulated specifically for men. These multivitamins are designed to support men’s health by providing essential vitamins and minerals that promote overall wellness, boost immune function, and enhance energy levels.
GNC’s Mega Men multivitamins are known for their comprehensive nutrient profiles, targeting areas such as heart health, muscle function, and prostate health.
This makes them a popular choice among men looking to supplement their diets with essential nutrients.
You can read my full GNC Mega Men Multivitamin review here.
Opti Men vs. GNC Mega Men Main Differences
Benefits
Men’s specific multivitamins, such as Opti-Men and GNC Mega Men, are designed to meet men’s unique nutritional needs and offer targeted health support.
Opti-Men by Optimum Nutrition provides a blend of over 75 active ingredients, including essential vitamins, minerals, and amino acids.
Its key benefits include immune support through vitamins C, D, and E, energy and vitality boosted by B vitamins, and enhanced muscle function and recovery supported by magnesium.
GNC Mega Men multivitamins promote overall wellness in men by supporting heart health and prostate health and providing antioxidant protection.
Nutrients like vitamin B6 and folic acid support cardiovascular health, while saw palmetto and lycopene help maintain prostate health. Antioxidants such as vitamins C and E reduce oxidative stress, promoting cellular health.
These multivitamins also help balance hormones, maintain bone health, and support cognitive function. Ingredients like zinc and vitamin D support healthy testosterone levels and bone strength, while B vitamins and omega-3s enhance mental clarity.
Overall, Opti-Men and GNC Mega Men provide a natural and convenient way to fill nutritional gaps and support men’s health.
Ingredients
Opti-Men boasts 75 active components divided into specific blends with different functions, while GNC Mega Men also boasts a very extensive ingredient list.
The two products have mostly transparent ingredient lists that show the exact dosages of the essential ingredients. They also contain some multi-component blends with the total weight specified on the label.
The two products’ vitamin complexes contain many of the same components, which is to be expected. These include Vitamins A, C, D, E, B12, B6, Folate, Niacin, Riboflavin, Thiamine, Magnesium, Zinc, Copper, Selenium, and many others.
Opti Men leads in dosages for some components, while GNC Mega Men is more generously dosed in others. While most elements are well-dosed, some vitamins are too high, especially the B vitamins in GNC, which have insanely high dosages.
For reference, Opti Men has 5 mg of vitamin B6, which is a decent dose, while GNC has 10 times more with 50 mg.
Another example is the mammoth dose of Riboflavin in GNC, again 10 times higher than that of Opti Men, which is already over the daily recommendation.
Unfortunately, quite a few components are also underdosed. GNC Mega Men has 50 mg of L-arginine and 50 mg of L-glutamine, which help with blood flow, testosterone production, muscle growth, and recovery. However, the doses are far too low to deliver the desired effects.
Opti Men has a better amino mix, with 1000 mg distributed between BCAAs, but this is still not enough for full results.
Opti Men also contains herbs and plants, including ginger, green tea, and olive leaf extracts, but in minuscule doses.
On the other hand, GNC Mega Men includes a 62 mg fruit and vegetable blend with two dozen ingredients, including orange peel, spinach leaf, elderberry fruit, grape skin, apple, and kiwi powders, among many others.
The blend looks impressive, but many ingredients are in too small doses or proven ineffective when powdered.
A noteworthy addition to the Opti Men formula is the 500 mg of Lutein, which maintains eye health and reduces inflammation and oxidative stress.
Effectiveness
Opti Men had the better effect on my health, mainly in terms of increased and more sustainable energy levels. All multivitamins support the immune function, so this is likely another certain benefit, even if it’s harder to gauge.
GNC Mega Men contains a ton of vitamins and minerals, but since everything else is underdosed, I didn’t expect many benefits besides better energy and an immune system.
However, the product had other effects, which I will discuss in the side effects section of the article.
Clinical Research
Clinical research on Opti-Men and GNC Mega Men multivitamins focuses on assessing their effectiveness in meeting men’s nutritional needs and supporting overall health.
Studies indicate that both products contain a comprehensive blend of vitamins and minerals tailored to men’s health concerns, such as immune support, energy metabolism, and muscle recovery.
GNC Mega Men, for instance, has been shown in clinical trials to improve antioxidant levels and heart health markers, thanks to its blend of vitamins and botanical extracts.
Similarly, Opti-Men’s formulation includes amino acids and phytonutrients, which research suggests can enhance energy and reduce oxidative stress.
While these multivitamins are designed to complement a healthy lifestyle, individual results can vary. For optimal benefits, they should be used alongside a balanced diet and regular exercise.
Side Effects
With so many components, you may encounter certain adverse effects, at least initially. The majority of people have no problems, but if you are allergic to specific compounds, you may have an allergic reaction.
The most common side effect is stomach distress, which can be caused by a variety of components, especially those in larger doses.
GNC Mega Men definitely involves a much higher risk of side effects. With a few components drastically overdosed, you may experience some more unpleasant reactions, which also happened to me.
I generally have good gut health, but through the entire 30-day trial, my stomach felt strange, and I almost gave up on the pills before the end of the period.
User Reviews
When you read the online reviews for Opti Men, it appears to be a terrific product. Based on verified Amazon customer ratings, it has an excellent 4.6 out of 5 stars.
When you read the good reviews, many people say it offers them a little more energy, is of great quality and easy to take, and gives them peace of mind knowing that adding it to their daily routine helps solve nutrient gaps caused by a poor diet.
However, there have been no reviews from people who claim it has dramatically improved their general health.
There were a few essential factors to consider when it came to negative reviews. Most of the negative reviews stated that it had no benefit to their health, with some claiming that it induced side effects.
GNC Mega Men has an average review score of 4.5 out of 5 stars from prior consumers who have completed a verified purchase, which is highly promising.
It can be difficult to draw conclusions when a supplement is only available for purchase on its own website.
After further investigation, it appears that almost all of the 4—or 5-star reviews are based on the large number of vitamins and minerals contained in the GNC supplement, as well as the added antioxidants and whole food extracts, rather than the effect it had on their health.
When I looked at the reviews that awarded the multivitamin 1 or 2 stars, things worsened.
Not only did several guys report no noticeable improvement when taking GNC Mega Men, but many also complained about the flavor and cost of the multivitamin.
Some reviewers who gave it one or two stars even stated that the vitamin supplement led them to have adverse effects, which also matches my experience.
Price
| Multivitamin | 1 Bottle | 50 Servings / Subscription | 80 Servings |
|---|---|---|---|
| Opti Men | $31.99 ($1.06 per serving) | $48.99 ($0.97 per serving) | $77.99 ($0.97 per serving) |
| GNC Mega Men Multivitamin | $44.99 ($0.50 per serving) | $42.74 ($0.47 per serving) |
My Experience With Opti Men And GNC Mega Men
Opti Men and GNC Mega Men had some positive effects on my well-being, mainly in terms of energy levels, which is an important benefit for someone as busy as me. Other effects of multivitamins, like heart health and immune support, are less noticeable by their nature.
Unfortunately, this is as far as the positive effects go. I’ve had much better experiences with more potent formulations, which have either boosted my concentration and brain power or helped me in the gym, but I didn’t experience any such results from these two.
Then there are the side effects. Opti Men gave me stomach problems, including bloating and gas. The effect faded after two or three days, but it’s still worth mentioning.
The situation with GNC Mega Men was much worse, and the funny feeling in my stomach did not disappear for the whole duration of my intake. I attribute this to the enormous doses of far too many components.
Should You Choose Opti Men Or GNC Mega Men?
Opti Men delivered some mild benefits, and the side effects were only momentary, so in general, it’s not a bad multivitamin. It will load you with the most essential vitamins and minerals your body needs to operate properly.
However, the price is over $1.00 per serving, which is very high for a supplement of this type. I believe it’s inflated because of the dozens of components in the formulation. However, most of them are in too small doses to elicit any effects, so you’re basically paying for nothing.
GNC Mega Men is more adequately priced for a multivitamin at $.50 per serving, and it does contain a ton of vitamins and minerals.
But here, the overdosing poses too big a risk for side effects, while the benefits are not as pronounced as I would have hoped.
The nasty feeling in my stomach, which simply wouldn’t subside, makes it impossible for me to recommend the product.
What I can recommend for men who want the best multivitamin is Prime Male T vitamins, which costs the same as Opti Men but delivers a much wider range of benefits.
Winner
Prime Male T Vitamins
A multivitamin designed for men to support hormones and attack vitamin and mineral deficiencies.
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