
B-Quiet (Tryptophan + Magnesium Chloride + Thiamine + Calcium Levulinate) is a compounded formulation containing Tryptophan + Magnesium Chloride + Thiamine + Calcium Levulinate, prepared by Mixlab for veterinary use. Available by prescription.
Giving your pet an injection might feel intimidating at first, but with practice, it becomes routine. Follow these steps for safe and stress-free injections.
Get Your Supplies Ready
Drawing Up the Dose (if needed)
Pick the Injection Site
Prep the Area
Inject the Medication
After the Injection
Safety Tips
This is a compounded preparation combining the active ingredients listed in the product name. In compounding practice, clinicians may consider a multi-ingredient preparation like this to address more than one aspect of a patient's physiology at once. Your veterinarian determines whether it is appropriate for your animal.
At a pharmacological level, the components of B-Quiet act through several distinct pathways. L-tryptophan is an essential amino acid that serves as the biological precursor to serotonin, a neurotransmitter associated with the modulation of behavior and mood. Thiamine functions as a vital coenzyme in carbohydrate metabolism and is essential for normal neurological function. Magnesium chloride and calcium levulinate provide essential electrolytes that act at the cellular level to support neuromuscular stability and signal transmission. This formulation is typically intended for slow intravenous administration, allowing these active ingredients to be immediately available to the horse’s metabolic processes. Your veterinarian will determine if this concentrate is appropriate based on your horse’s weight, health status and the specific requirements of the clinical context.
This description reflects the general pharmacology of the active ingredient's drug class; your veterinarian determines whether this approach is appropriate for your animal.
Prescription only. Use only under the direction of a licensed veterinarian. This information is not a substitute for veterinary diagnosis, prescribing or monitoring. Compounded drugs are not approved by the FDA for safety or effectiveness.
Commonly observed effects following the administration of concentrated parenteral support include localized site irritation at the point of injection or transient changes in behavior as the body adjusts to the infusion. Because B-Quiet contains concentrated electrolytes and amino acids, it must be administered at a rate and volume determined by your veterinarian to avoid physiological complications such as cardiac rhythm shifts or anaphylactoid reactions. In some patients, rapid administration may be associated with sweating, restlessness or an increased respiratory rate. If you observe persistent swelling at the injection site or if your horse appears distressed following administration, contact your veterinarian promptly.
This product is typically used with extra caution in patients with known liver or kidney impairment, as these organs are responsible for processing and excreting various metabolic byproducts. It is also used carefully in horses with a history of hypersensitivity to injectable vitamin or mineral products. Before starting a protocol involving B-Quiet, ensure your veterinarian has a complete history of all other prescriptions and supplements your horse is receiving to avoid potential nutrient imbalances. Always follow the professional guidance provided by your veterinarian regarding the timing of administration and any necessary patient monitoring during the recovery period.
Yes. B-Quiet is a prescription product and can only be dispensed by a licensed pharmacy upon receipt of a valid authorization from a licensed veterinarian. Mixlab verifies all prescriptions before any medication is prepared or sent to your stable.
Yes. While B-Quiet is available in certain commercial formats, Mixlab can compound specialized nutritional or behavioral support formulations when your veterinarian determines that a specific concentration of amino acids and vitamins is required. The decision between a commercial and compounded product rests with the prescribing veterinarian.
Veterinarians discuss the inclusion of L-tryptophan because it is the primary building block for serotonin in the brain. It is considered as a way to support a more manageable temperament in horses undergoing periods of significant environmental or physical stress.
In equine medicine, this concentrate is typically administered via slow intravenous injection by a licensed professional. Your veterinarian will provide specific guidance on the administration protocol, as the speed of the infusion is critical for the horse’s safety and physiological stability.




