What is Propectalin used for?

Propectalin is effectively used as an anti-diarrheal medication and also serves as a probiotic. It primarily helps in reducing the frequency and regularity of bowel movements while promoting the balance of healthy gut flora. This dual action makes it particularly useful in cases where diarrhea is an issue, as it not only addresses the problem by slowing down gastrointestinal motility but also supports digestive health through the introduction of beneficial bacteria. This is important for pets that may suffer from diarrhea due to dietary indiscretion, infections, or stress-related gastrointestinal upset.

Other options, while they may pertain to different medications or treatments, are not applicable to Propectalin's intended use. For instance, treatments for vomiting or allergy management do not encompass Propectalin's properties, nor is it designed for pain relief. Therefore, option B is the correct answer regarding Propectalin’s purpose in veterinary medicine.