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GNC Mega Men Review
Bottom Line

Users give GNC Mega Men high marks, with few complaints of digestive upsets or other side effects; although a few report an aftertaste. The pills are reported as easy to swallow. In expert testing this multivitamin gets very high ratings for purity, safety and projected efficacy.

ProsNo iron, Easy to swallow, Passes independent testing, 50 percent of vitamin A as beta-caroteneConsExceeds UL for niacin, Some report an aftertaste

Breaking it down

Key ingredients

Good for a vitamin D boost. GNC makes several formulations under the Mega Men label, including this fairly basic blend. It has a pretty standard combination of vitamins as recommended for men, including no iron, with slightly higher levels of vitamin D3 -- 1,600 IU. It's on the high side for B vitamins, and exceeds the recommend tolerable upper intake level (UL) for niacin, but that's not considered to be a dangerous or even unusual formulation -- although excess niacin can cause flushing, we did not read of any report of flushing in user reviewers. Mega Men puts a focus on antioxidants with a proprietary blend of fruits and vegetables. It has been certified by professional testing organizations for accuracy in labeling. Instructions say to take two capsules per day.

Side effects/contraindications

No red flags. If you have any health problems whatsoever, you should speak with your doctor before taking any multivitamin. However, for most people, GNC Mega Men is unlikely to cause any sort of side effects. Other than the high levels of niacin, which, as we mentioned in the previous section can cause flushing in some, Mega Men's ingredients are fairly standard in a general multivitamin and are well-tolerated by most. Because of its high levels of B vitamins, it may cause urine to appear bright or fluorescent yellow. This is normal and is merely the body's way of ridding itself of unneeded vitamins. It is gluten-free, but not vegetarian as it contains fish oils.

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Our Sources

1. Consumer Lab

Multivitamin and Multimineral Supplements Review, Editors of ConsumerLab.com, Nov 22, 2015

GNC Mega Men multivitamin is one of a wide variety of multivitamins tested by ConsumerLab.com in its latest review of multivitamin supplements. ConsumerLab.com tests for quality, accuracy in claimed ingredients and if a product meets FDA labeling requirements. Products are either approved or not approved.

2. LabDoor.com

GNC Mega Men, Editors of LabDoor.com, Not Dated

GNC Mega Men is number eight overall, number four in best multivitamins for men, and number six for value. It receives an overall score of "A," meaning it meets testing criteria for label accuracy, product purity, nutritional value, ingredient safety and projected efficacy.

3. Amazon.com

GNC Mega Men Multi Vitamin, Contributors to Amazon.com , As of March 2016

In more than 450 customer reviews, GNC Mega Men earns an overall rating of 4.5 stars out of 5. A number of users say they started taking it after being diagnosed with low levels of vitamin D and that follow up tests have shown a marked improvement. The only complaints we saw were that it "doesn't work" for some (although they don't specify what they expected it to do), and that this supplement turns urine a bright florescent color.

4. GNC.com

GNC Mega Men, Contributors to GNC.com, As of March 2016

There are just a few reviews of GNC Mega Men multivitamin, although there are quite a few for other formulations of this line. Still, the basic multi earns an overall rating of 4.7 stars out of 5, although users don't say much about it other than it has a powdery, flour smell.