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"ThymoForce" and "Flexineb Nebulizer" by SilverVet — Health (Nano-silver inhalation therapy for your horse's lungs and airways)

"ThymoForce" and "Flexineb Nebulizer" by SilverVet

Nano-silver inhalation therapy for your horse's lungs and airways.

Are breathing issues holding back your horse's performance and recovery times?

Reviewed by Ann Pruitt, InfoHorse.com · Updated May 2026
SilverVet representative handing the blue Flexineb nebulizer mask to a horse owner beside a chestnut horse in a barn
SilverVet representative handing the blue Flexineb nebulizer mask to a horse owner beside a chestnut horse in a barn

When a horse starts coughing in the cross-ties, wheezing after a gallop, or losing condition through a long, dusty summer, every owner wants the same thing: easier breathing and a faster road back. ThymoForce and the Flexineb Nebulizer by SilverVet were built for exactly that moment, pairing a nano-silver respiratory formula with a portable equine nebulizer so support goes straight to the lungs and airways where it is needed most.

Row of ThymoForce by SilverVet equine supplement pouches on a white background
Row of ThymoForce by SilverVet equine supplement pouches on a white background

What are ThymoForce and the Flexineb Nebulizer?

ThymoForce

is SilverVet's premium equine immune and respiratory support formula, combining thymus gland proteins, zinc, and SilverVet's Rapid Response™ nano-silver with Triple Defense Technology. It can be delivered two ways: nebulized directly into the airways for a targeted respiratory focus, or given orally with the included syringe for a whole-body, systemic effect.

The Flexineb is a portable, battery-operated equine nebulizer. It turns the ThymoForce solution into a fine breathable mist your horse inhales through a comfortable mask, and the same device can also deliver pharmaceutical medications prescribed by your veterinarian.

How does nebulized silver reach the airways?

Instead of asking a struggling horse to swallow a paste and hope it works upstream, the Flexineb aerosolizes ThymoForce into a breathable mist. As the horse inhales, the formula travels into the nasal passages, throat, and lungs, putting support exactly where the irritation lives. A typical routine starts with several consecutive days of treatment and then tapers to every other day, with many owners beginning a course about a week before travel and competition.

Thoroughbred racehorses and jockeys thundering down the track in close competition
Thoroughbred racehorses and jockeys thundering down the track in close competition

Which respiratory conditions does ThymoForce help address?

SilverVet positions Thymo Force as respiratory support across a wide range of equine airway challenges, including Exercise-Induced Pulmonary Hemorrhage (EIPH, the "bleeder"), respiratory infections, coughs and mucus, asthma, pharyngitis, pharyngeal hyperplasia, guttural pouch infection, ethmoid hematoma, and entrapped epiglottis with sub-epiglottic ulcers. For EIPH management, SilverVet describes a three-month treatment protocol. The goal across all of these is the same: cleaner, easier breathing so the horse can train, travel, and compete in comfort.

"While at a barrel race I used ThymoForce to nebulize my horse who was wheezing and coughing the day before the race. SilverVet was at the show and I asked them to nebulize my horse Bugsy who then went on to perform amazing the next day and actually win with one of his best runs! We used the prize money to get a Flexineb nebulizer from the guys at SilverVet and have been using this amazing product since then to keep Bugsy in optimal racing condition. I absolutely swear by this stuff. " Laci S.

Why silver, and why SilverVet's nano-silver?

SilverVet harnesses the long-recognized properties of silver, but engineers it differently. Their Rapid Response™ nano-silver uses Triple Defense Technology, meaning each particle works against pathogens through three distinct mechanisms at once, rather than the single mechanism of conventional colloidal silver. Because each particle does more, SilverVet says it achieves results with a fraction of the silver, outperforming other silvers that can carry up to 300 times the amount.

The formula is designed to stay in suspension rather than settle out, to keep working continuously without depleting, and to be gentle in use: it is described as harmless to beneficial probiotic bacteria, with no toxic buildup. SilverVet is a family-and-friends-owned American company that sums up its philosophy simply, "American innovation. American made."

Three bridled sport horses photographed in profile against a black studio backdrop
Three bridled sport horses photographed in profile against a black studio backdrop

What results are horse owners seeing?

The clearest proof comes from the barn aisle. One Colorado owner whose stud was diagnosed with equine asthma, severe heaves, and weight loss, after more than $4,000 in vet bills, steroids, and bronchial aspirators without improvement, began nebulizing ThymoForce and reported within about three weeks that his horse's breathing had improved dramatically and that he had more energy. Stories like that are why owners reach for the Flexineb before the next big trip or competition.

Bay sport horse in a browband bridle photographed in profile against a dramatic black background
Bay sport horse in a browband bridle photographed in profile against a dramatic black background
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The Solution Section (FAQ)
What is the difference between ThymoForce and the Flexineb Nebulizer?

ThymoForce is the respiratory and immune support formula, a blend of thymus gland proteins, zinc, and SilverVet's Rapid Response™ nano-silver. The Flexineb is the portable, battery-operated equine nebulizer that turns ThymoForce into a breathable mist the horse inhales. They are designed to work together, though ThymoForce can also be given orally with the included syringe.

How is ThymoForce administered to a horse?

Two ways. For a respiratory focus it is nebulized through the Flexineb so the horse breathes it directly into the airways and lungs. For a systemic, whole-body effect it can be given orally using the syringe included with the product.

What is a typical ThymoForce treatment schedule?

Owners commonly start with about five straight days of nebulizing and then move to every other day as recommended. Many begin a course roughly one week before traveling and competition. For Exercise-Induced Pulmonary Hemorrhage, SilverVet describes a three-month treatment protocol.

What respiratory conditions is ThymoForce used for?

SilverVet lists support for EIPH (bleeders), respiratory infections, coughs and mucus, asthma, pharyngitis, pharyngeal hyperplasia, guttural pouch infection, ethmoid hematoma, and entrapped epiglottis with sub-epiglottic ulcers.

How is SilverVet's nano-silver different from regular colloidal silver?

SilverVet's Rapid Response™ nano-silver uses Triple Defense Technology, so each particle works through three distinct mechanisms rather than the single mechanism of typical colloidal silver. SilverVet says this lets it deliver results with far less silver, outperforming products that carry up to 300 times the amount.

Is the silver formula safe for my horse's gut?

SilverVet describes the formula as harmless to beneficial probiotic bacteria, with no toxic buildup. It is also engineered to stay in suspension and keep working continuously rather than settling out or depleting.

Can the Flexineb deliver medications other than ThymoForce?

Yes. The Flexineb is a versatile equine nebulizer that can also deliver pharmaceutical medications prescribed by your veterinarian, in addition to ThymoForce.

Who makes ThymoForce and the Flexineb Nebulizer?

They are offered by SilverVet, a family-and-friends-owned American company creating natural nano-silver health and wellness products for animals, with a philosophy of "American innovation. American made."

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Ann Pruitt
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