Premium Horse Supplements since 1997

Sierra Gold Supplements for Horses

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The Mellow Muscle gave my mare a second chance at life and I would like make sure others who are dealing with PSSM can see your product and hopefully get their horses some relief. She was out of commission for 2 years before I found your product mentioned in a PSSM facebook forum. I had never heard of PSSM until a year after I purchased her and the last 6 years with her have been up and down. As of right now she is running 22 second poles again and being the best goat horse I could ask for. She has been handed down to my middle daughter but I have no doubt...

Jamie H (CA)

I currently have 2 special needs horses - one with RER and one with PSSM2. This supplement has been a game changer for all our horses. The extra magnesium helps with calming and the amino acids help rebuild/sustain muscle and has kept my horses healthy and free from tie ups and muscle spasms. The added vitamins and minerals help round out their mostly grass/grass hay diet. Both are much calmer with beautiful coats and healthy strong feet. I feed this with Coolstance Copra as a base to keep grains from their diet as both are prone to IR. I just can't say...

S. Schuman

I have been using Sierra Gold supplements since 2010 and always loved them. In 2017 when they formulated the Mellow Muscle for horses with PSSM it was a real game changer for two of my horses. Previously I had been buying several products and trying to piece together what I needed and it was costing me a fortune.

Now we have around 17 horses at my ranch that use the Mellow Muscle and it’s everyone’s favorite. It’s formulated with the right amounts of amino acids which make their coats and hooves look amazing, not to mention helps them keep their muscle...

Gina K CA

Creamine was recommend to me by a horse chiropractor whose wealth of knowledge was undisputed. I believe it kept my old Arabian mare going for years. Now, I have a gaited horse with joint issues and he too takes the supplement. The winter before last, I stopped giving it to him. It was a mistake and for three months, he was on drugs to keep him sound. He is now on Creamine full time and his issues are well under control without drugs. In addition, my farrier says she has never seen his hooves look better. Nearly all of us now use Creamine and swear by it...

Merryanne M - OR

"Sierra Gold is an incredible company. My horse developed strong twitching withers, Just purchased him - he was irritated and couldn't be ridden. Sierra Gold was recommended to by a chiropractor who said to call Dan who was not only wonderfully pleasant but extremely knowledgeable and helpful. I can't thank Sierra Gold for the integrity they have in their products. I will always keep my Friesian on Sierra Gold,

Kelly C (HI)

This is Lance, He was a little guy that really struggled with being spooky and uncomfortable in his own skin, He had a significant buck and bolt. We treated him for ulcers and revamped his training program using positive reinforcemantand passive leadership. I now feel safe enough to ride him bareback and bridleless and he has turned into a wonderful family horse, He is now doing amazing and is supported by Mellow Muscle. Thank you,

Melissa E

Hi, I just wanna give a shout out to Sierra Gold Nutrition. We just got home from the Ruby Buckle and Tesla did awesome and won us a little money there and we feed their Mellow Muscle, it's a vitamin, mineral mix, but it helps these horses that need extra support for their muscles. So check out the ingredients. There's no fillers. It's got the antioxidant support, the amino acids, everything that these performance horses need to succeed.
Kim Olson (OR)

"We love Sierra Gold Mellow Muscle (Grass) and how it has helped our horse Layla who had issues with tying up. We have seen less and less tying up and she is thriving on this product. Her coat and weight have never looked better. Also, I can't say enough about the customer service we have received. We are so glad we found this product and would highly recommend it."

Jennifer H. (MI)

"I have two PSSM horses which I feed this supplement to. It has been a game changer in helping to keep them comfortable. Dan is awesome to work with, The few times there has been a hic-up with an order, it is corrected immediately. Truly a great company and great product."
Stacy Clark (WA)

I was so excited to have Bond enjoying pasture at his new barn, but after a few weeks, I noticed some concerning changes—his coat had become sun-bleached and dull, his hooves were starting to deteriorate, and his energy just wasn’t the same. It quickly became clear that something was missing nutritionally, and grass testing confirmed it: the mineral balance was way off due to volcanic soil high in aluminum and iron.


That’s when Sierra Gold came to the rescue. Their supplement, specially formulated for the islands, made a world of difference...

Kelly C (HI)

About Us

A commitment to excellence.
Our mission has been to provide a top quality line of nutritional supplements with time-tested products that deliver consistent results. We are always looking for ways to better serve our clients and invite all suggestions or requests for information.

Delivery & Returns

Qualified orders ship free by USPS Priority Mail. We also offer Flat Rate UPS Ground shipping. See shipping options at check out. We will be happy to assist you with eligible returns, the return instructions, and the shipping address. If you need a return or exchange, send us an email so we can discuss a replacement. Sale, discount or auto-ship items are not eligible for return. (see auto-ship terms) All eligible, unopened pouches in re-salable condition can be returned to: 2462 Warren Ave. Twin Falls, ID 83301

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We invite your questions and look forward to helping you find answers.

Our Address
PO Box 5855 Twin Falls, ID 83303-5855
Open hours
Daily 08:00 AM —05:00 PM MST