Floranex is a probiotic. It’s classified as a dietary supplement and contains a blend of two live bacterial strains: Lactobacillus acidophilus and Lactobacillus bulgaricus. These are among the most widely studied probiotic bacteria, and the combination is primarily used to support digestive health.
What’s in Floranex
Floranex delivers two species of Lactobacillus, a type of beneficial bacteria that naturally lives in the human gut. The granule form contains 100 million colony-forming units (CFU) of each strain per gram. Colony-forming units are the standard way of measuring how many live, active bacteria a probiotic product contains.
The two strains work together. Lactobacillus acidophilus is one of the most common probiotic species, found naturally in your intestines and in fermented foods like yogurt. Lactobacillus bulgaricus is a closely related species traditionally used in yogurt production. Both produce lactic acid in the gut, which helps maintain an environment where harmful bacteria struggle to thrive.
Floranex is essentially a generic version of a product called Lactinex, which uses the same bacterial combination at the same concentrations.
Available Forms and How to Take It
Floranex comes in two forms: chewable tablets and granule packets. The tablets are the more common format, with a recommended dose of four tablets taken three to four times daily. You can follow each dose with a small amount of milk, fruit juice, or water.
The granule packets are designed to be mixed into food or liquid. If you’re taking antibiotics at the same time, spacing matters. Take Floranex at least two to three hours before or after your antibiotic dose, since antibiotics can kill the live bacteria in the supplement before they reach your gut.
Unlike many probiotics, Floranex does not require refrigeration. Store it in a cool, dry place away from heat, light, and moisture.
What It’s Used For
Floranex is most often used to manage or prevent diarrhea, particularly the kind caused by antibiotics. When you take antibiotics, they don’t just kill the bacteria making you sick. They also wipe out beneficial bacteria in your intestines, which can lead to loose stools or full-blown diarrhea. Replacing those bacteria with a probiotic like Floranex can help restore balance.
A systematic review published in Frontiers in Gastroenterology looked specifically at this combination of Lactobacillus acidophilus and Lactobacillus bulgaricus for treating diarrhea. The conditions studied included antibiotic-associated diarrhea (from common antibiotics like amoxicillin and ampicillin), diarrhea caused by E. coli infection, and traveler’s diarrhea. These are the situations where this particular probiotic blend has the most clinical evidence behind it.
Who Should Avoid It
The product label carries one clear warning: do not use Floranex if you are sensitive to milk products. The bacterial strains in Floranex are cultured using dairy, so anyone with a milk allergy or severe lactose intolerance should choose a different probiotic. Mild lactose intolerance is a grayer area, since the amount of dairy residue in a tablet is small, but it’s worth being cautious if dairy consistently causes you problems.
How Floranex Compares to Other Probiotics
The probiotic market is enormous, and Floranex sits at the simpler end of the spectrum. With two bacterial strains and 100 million CFU per gram, it’s a relatively modest product compared to multi-strain supplements that advertise tens of billions of CFU per capsule. That doesn’t automatically make it less effective for its intended purpose. More strains and higher CFU counts aren’t always better, since effectiveness depends on whether the specific strains match the condition you’re trying to address.
Where Floranex has an advantage is specificity. Its exact two-strain combination has been studied directly for antibiotic-associated and infectious diarrhea. If that’s your reason for taking a probiotic, it’s a targeted choice rather than a broad-spectrum guess. For general gut health or other conditions like irritable bowel syndrome, probiotics with different strains (such as Bifidobacterium or Saccharomyces boulardii) may be more appropriate.
Floranex is manufactured by Rising Pharmaceuticals and is available over the counter without a prescription, though healthcare providers sometimes recommend it alongside antibiotic prescriptions.