Our picks at a glance
Best for digestive health: Purina Pro Plan FortiFlora; Best for giving pills: Greenies Pill Pockets (15.8 oz)
Struggling with a dog who won’t take medicine or suffers from stomach issues? The right supplement or treat can transform stressful medication time or settle an upset digestive system. We researched the top-rated products to help you choose between digestive probiotics and pill-hiding treats.
| Product | Best for | Rating | Price |
|---|---|---|---|
| Purina Pro Plan FortiFlora | Digestive health & diarrhea | 4.7/5 (49,944 ratings) | $44.99 |
| Greenies Pill Pockets (15.8 oz) | Large dogs needing meds | 4.8/5 (22,868 ratings) | $9.98 |
| Greenies Pill Pockets (7.9 oz) | Trial size or smaller needs | 4.7/5 (12,830 ratings) | $9.98 |
1. Purina Pro Plan FortiFlora — Best for Digestive Health
When your dog deals with diarrhea or digestive upset, this probiotic powder aims to restore gut balance. According to the brand, FortiFlora is the #1 vet-recommended probiotic brand based on a survey of US veterinarians in Q4 2025, and it’s earned 4.7 stars from nearly 50,000 Amazon buyers.
The brand says this supplement contains proven probiotics designed to promote intestinal health in both puppies and adult dogs. It’s formulated as an easy-to-feed powder that includes immune-supporting antioxidants, and it’s developed in collaboration with Purina nutritionists, researchers, and veterinarians for the dietary management of dogs with diarrhea.
✅ Strengths
- Number 1 vet-recommended probiotic brand according to recent survey
- Suitable for dogs of all ages, from puppies to seniors
- Easy-to-feed powder format mixes with food
- Nearly 50,000 Amazon ratings with 4.7-star average
- Includes immune-supporting antioxidants
❌ Watch out for
- Higher price point at $44.99 compared to basic treats
- Requires consistent daily administration for effectiveness
2. Greenies Pill Pockets Large Size (15.8 oz) — Best for Medicating Large Dogs
Wrestling with a smart dog who sniffs out hidden pills in cheese or peanut butter? These vet-recommended treats are designed to mask medication odor while making pill time stress-free. With 4.8 stars from over 22,000 buyers, this is the highest-rated option in our comparison.
According to the listing, these peanut butter-flavored pockets are a low-calorie alternative to messier human foods. The brand says you simply drop the capsule inside, pinch it closed, and offer it as a treat—turning medication into a positive experience for large-size dogs.
✅ Strengths
- Highest rating at 4.8 stars from 22,868 Amazon reviews
- Larger 15.8 oz package offers better value for regular use
- Vet-recommended for odor masking
- Low-calorie compared to cheese or peanut butter
- Simple three-step process: drop, pinch, give
❌ Watch out for
- Sized for large dogs only—not suitable for small breeds
- Peanut butter flavor may not appeal to all dogs
3. Greenies Pill Pockets Large Size (7.9 oz) — Best Trial Size
This is the same vet-recommended pill-hiding treat as option #2, but in a smaller 7.9 oz package. It’s earned 4.7 stars from nearly 13,000 Amazon buyers and costs the same $9.98 price point.
The brand says these peanut butter-flavored pockets work the same way as the larger package—drop the capsule inside, pinch closed, and offer as a treat. This half-size option is designed for pet owners who want to test whether their dog likes the product before committing to a larger quantity, or for those who only occasionally need to give medication.
✅ Strengths
- Same per-unit price as larger package ($9.98)
- Good for testing before buying in bulk
- Vet-recommended odor masking technology
- Solid 4.7-star rating from 12,830 reviews
- Less waste if dog doesn’t take medication regularly
❌ Watch out for
- Half the quantity (7.9 oz vs 15.8 oz) at the same price
- Less economical for dogs on daily medication
How We Chose
We selected these products based on verified Amazon ratings, number of buyer reviews, and manufacturer specifications. The Purina FortiFlora was chosen as the top digestive supplement due to its vet-recommendation status and nearly 50,000 ratings, while the Greenies Pill Pockets earned spots for their high ratings (4.7–4.8 stars) and vet-recommended status for medication administration. We compared package sizes and value to help readers choose between trial and bulk options. We did not personally test these products—our analysis is based on published specs, brand claims, and aggregated buyer feedback data.
📢 Affiliate disclosure: We earn a small commission if you buy through our links, at no extra cost to you.
How we review: We don’t test every product in person. We research specs, manufacturer info and thousands of verified buyer reviews, then summarize what matters. Prices and availability change — check Amazon for current details.