Product Image


Med-Vet Pharmaceuticals (MVP)
- Item #11815
Form: Pellets
Maintenance Dose: 1 SmartPak Well

Mega-Mag™ (Pellet) is a well balanced multi-vitamin and mineral supplement formulated to coincide with current NRC (National Research Council) recommended daily requirements, to accommodate feeding programs consisting of alfalfa hay/grain based diets. The addition of live, stabilized direct fed microbials, live cell yeast culture and amino-acid content, sourced from alfalfa meal, rice bran and soybean meal makes Mega-Mag™ an excellent choice to support growth, stamina, conditioning and maximum performance for all disciplines.

Note: To accommodate feeding programs consisting of grass type hays (timothy, coastal, bermuda, native grass)/grain, choose Mega-Cell™.

View our Multi-Vitamin Supplement Comparison Chart

Order This Product In:

    Ships every 28 days
Maintenance Dose
Custom Dose  cancel
Sign in to choose an existing horse
Shipping on SmartPaks over $40
Congrats, you earned free shipping!

Sign in to choose an existing horse
Shipping on orders over $75
Congrats, you earned free shipping!
You Might Also Like

    SmartPak customers are some of the most conscientious animal owners around. We encourage you to share your experience with the products we sell to help fellow customers to make informed choices for their animals. We do not edit these reviews in any way - they are direct customer-to-customer communication. We do monitor reviews for positive and negative feedback, and use this feedback to improve our selection as well as sharing feedback with product manufacturers to help them improve their products. Please note that we recommend consulting your vet with serious health issues.

    Mega-Mag™ is rated 4.6818 out of 5 by 44.
    Rated 4 out of 5 by from Good results so far Started feeding this to my picky colt who decided he was no longer going to eat his colt vitamin. In just a month he's filled out nicer, his growth is nice and stable and he has a great shine. Even his new hoof growth at the coronet band looks better. Can't wait to see him in a few months on this s
    Date published: 2014-03-29
    Rated 5 out of 5 by from
    Date published: 2014-03-20
    Rated 5 out of 5 by from
    Date published: 2013-12-02
    Rated 4 out of 5 by from
    Date published: 2013-09-30
    Rated 5 out of 5 by from Great product and economical I have had my 30 year old retired reining stallion on this for three years and have fed it to other horses in the past. Even my most suspicious/finicky eater did not question it in the feed bucket. I am sold on it and have no plans to switch. If I remember correctly I think that I started using it after a review in Mike Plumb's Horse Journal years ago. Price is so reasonable you hardly even need to budget for it.
    Date published: 2013-08-31
    Rated 2 out of 5 by from Good product but lacks iron This product was recommended to me by a SmartPak employee. My horse ate it without a problem, and my horse looked good and healthy. I was happy with it until I realized that it has no iron in it. My vet told me to find a multivite that has iron because it's important for giving your horse a healthy amount of energy, and my horse tends to be on the lazy side as it is, so I suspect the lack of iron in his diet was making him even lazier. I switched to Accel - pricier, but has everything in it.
    Date published: 2013-05-11
    Rated 5 out of 5 by from Very Happy with the Results I've waited a little while to comment on this supplement because I wanted to give it enough time to see how things went. Well, I have to say that I have seen a big change in my horse since starting him on this multi- vitamin/mineral supplement. To give a brief background on my horse, he is only four years old and last year he became very sick and we battled for about 6 months to save him. During that time, my vet advised to change his feed to Equine Senior and only give a small amount; that small amount is only two pounds a day, just enough to mix in his supplements to feed. Needless to say, I knew he wasn't getting his recommended vitamins and minerals with his feed, so I searched for something to supplement for that. Since he was being feed Alfalfa, I opted for the Mega Mag. My guy is solid black and since putting him on this, it looks like he has dapples on his coat; he has really bloomed on this stuff. He has put on the weight since adding this to his smart paks, so I am going to have to cut him back on his hay and grain a little now, but he looks awesome!!! He acts likes he feels great so all in all…… I am pleased with this choice so far!
    Date published: 2013-04-22
    Rated 4 out of 5 by from Good value, very palatable My horse eats these without any grain. His coat is looking good and I especially like the price. Will continue to use in my horse's smartpaks.
    Date published: 2012-05-02
    Have questions? Contact us »
    Connect with us:

    Meet the SmartPakers

    Brittany and Nate
    Ever since I was the girl with 1,000 breyer horses and the raggity braid in her hair, I was always obsessed. In second grade I moved into a town with a barn right down the street, which is when I started taking lessons...

    Learn more »

    Read our blog

    Supplements and Feeds for Senior Horses
    I run barrels and ride a 14yr. old mare, she will be 15 next month. Should I put her on any certain supplements or a senior feed? All she gets now is a 12-4 pellet feed. She is doing ok

    Read More »

    Healthy horses, happy riders.
    SmartPak is committed to a greener planet.
    Sign Up Now!
    Free Catalog Get Yours Now!

    SmartPak Equine is the premier online provider of horse supplies and equine supplements.
    Questions? Call us Toll-Free at 1-888-752-5171. © Copyright 2014 by SmartPak Equine LLC. All Rights reserved.