Pet Probiotic Dosing Calculator

Enter your pet's species, weight, and health goal to get a recommended daily probiotic dose, the best bacterial strains to look for on the label, and practical tips for buying. Nothing uploaded.

CFU ? dose by weight Dog & cat support Strain recommendations Goal-adjusted dose Veterinarian-sourced ranges
General guidance only. This calculator provides estimated ranges based on published veterinary research. Consult your veterinarian before starting any supplement, especially for pets with health conditions or those currently taking medication.

Your pet

Species

Weight

-- billion CFU / day

Timing:

Duration:

Strains to look for on the label

Primary strains

Also beneficial

Look for products that state the CFU count at time of expiry, not the manufacture date. CFU counts drop over time, so a guarantee at expiry ensures the dose is still active when your pet takes it.

What to look for when buying

  • Check that the label guarantees CFU at time of expiry, not at manufacture. CFU decline during storage, so this number is what your pet actually receives.
  • Refrigerated products generally maintain better bacterial viability than room-temperature options, especially for sensitive strains.
  • Single-strain products can be highly effective; multi-strain products offer broader coverage. Match the strains to your pet's specific need rather than chasing the highest strain count.
  • Start at half the target dose for the first week to allow your pet's digestive system to adjust. Gradually increase to the full calculated dose.