{"product_id":"four-leaf-rover-saccharomyces-boulardii","title":"Saccharomyces Boulardii","description":"\u003cstyle\u003e\n  .flr-sboulardii * { box-sizing: border-box; margin: 0; padding: 0; }\n  .flr-sboulardii {\n    font-family: -apple-system, BlinkMacSystemFont, 'Helvetica Neue', sans-serif;\n    font-size: 14px;\n    color: #2E2C28;\n    line-height: 1.65;\n  }\n  .flr-sboulardii p { font-size: 14px; color: #555; line-height: 1.65; margin-bottom: 1rem; }\n  .flr-sboulardii p:last-child { margin-bottom: 0; }\n  .flr-sboulardii a { color: #87B0E1; text-decoration: none; }\n  .flr-sboulardii a:hover { text-decoration: underline; }\n  .flr-sboulardii .section-heading { font-size: 11px; font-weight: 500; letter-spacing: 0.08em; text-transform: uppercase; color: #87B0E1; border-bottom: 1.5px solid #87B0E1; padding-bottom: 4px; margin: 2rem 0 1rem; display: block; }\n  .flr-sboulardii .wl-callout { background: #F5F3F0; border-left: 4px solid #87B0E1; padding: 1rem 1.25rem; margin: 1.25rem 0; font-size: 14px; color: #555; line-height: 1.65; }\n  .flr-sboulardii .wl-callout strong { color: #2E2C28; font-weight: 500; }\n  .flr-sboulardii .flr-table { width: 100%; border-collapse: collapse; font-size: 13px; margin: 1rem 0 1.5rem; table-layout: fixed; }\n  .flr-sboulardii .flr-table th { background: #87B0E1; color: #fff; text-align: left; padding: 8px 10px; border: 1px solid #87B0E1; font-weight: 500; font-size: 12px; }\n  .flr-sboulardii .flr-table th.center { text-align: center; }\n  .flr-sboulardii .flr-table td { padding: 7px 10px; border: 1px solid #D8E8F5; font-size: 13px; color: #555; vertical-align: top; word-wrap: break-word; overflow-wrap: break-word; }\n  .flr-sboulardii .flr-table td.center { text-align: center; }\n  .flr-sboulardii .flr-table td.bold { font-weight: 500; color: #2E2C28; }\n  .flr-sboulardii .flr-table tr:nth-child(even) td { background: #F4F8FD; }\n  .flr-sboulardii .flr-table-wrap { overflow-x: auto; margin: 1rem 0 1.5rem; }\n  .flr-sboulardii .faq-block { margin-bottom: 1.25rem; padding-bottom: 1.25rem; border-bottom: 1px solid #E8E5E0; }\n  .flr-sboulardii .faq-block:last-of-type { border-bottom: none; padding-bottom: 0; margin-bottom: 0; }\n  .flr-sboulardii .faq-block .question { font-size: 14px; font-weight: 500; color: #2E2C28; margin-bottom: 6px; }\n  .flr-sboulardii .faq-block .answer { font-size: 14px; color: #555; line-height: 1.65; margin: 0; }\n\u003c\/style\u003e\n\n\u003cdiv class=\"flr-sboulardii\"\u003e\n\n  \u003cp\u003eSaccharomyces Boulardii is a single-ingredient probiotic yeast for dogs — paired with organic inulin from Jerusalem artichoke as its prebiotic fuel. Unlike bacterial probiotics, S. boulardii is a yeast, which means it is not affected by antibiotics or most gut-stressing medications. This makes it the Four Leaf Rover probiotic to reach for when a dog is actively on antibiotics, recovering from a course of medication, or dealing with the kind of digestive upset that bacteria-based probiotics can't fully resolve.\u003c\/p\u003e\n\n  \u003cp\u003eUnusually for the category, Four Leaf Rover's formula contains no maltodextrin — the high-glycemic carrier most probiotic supplements are bulked out with. No fillers, no synthetics, no artificial ingredients. Just probiotic yeast and whole-food prebiotic. Available in 49.5g.\u003c\/p\u003e\n\n  \u003cdiv class=\"wl-callout\"\u003e\n    \u003cstrong\u003eUsage \u0026amp; safety notes.\u003c\/strong\u003e\u003cbr\u003e\n    Give once or twice daily, mixed into food. Refrigerate after opening for best potency. Can be given alongside antibiotics without concern for interaction — the yeast is unaffected by antibacterial medications. Short-course use during digestive disruption is the typical pattern, though daily use is also safe.\n  \u003c\/div\u003e\n\n  \u003cspan class=\"section-heading\"\u003eWhy Probiotic Yeast, Not Bacteria\u003c\/span\u003e\n\n  \u003cp\u003eMost probiotics — Lactobacillus, Bifidobacterium, and their variants — are bacteria. That has a significant consequence: antibiotics destroy them. If your dog is on a course of antibiotics, a bacterial probiotic given at the same time is largely wasted, because the same medication that's killing the infection is also killing the probiotic. Saccharomyces boulardii is different. It's a yeast, not a bacteria, so antibiotics leave it untouched. This makes it the rare probiotic that can be given during active antibiotic treatment — not just after — and that's when gut support matters most.\u003c\/p\u003e\n\n  \u003cspan class=\"section-heading\"\u003eWhat S. Boulardii Does in the Gut\u003c\/span\u003e\n\n  \u003cp\u003eS. boulardii is a transient probiotic — it doesn't colonise the gut permanently the way bacterial probiotics try to. Instead, it passes through, working while it's present. Research shows it supports a healthy intestinal tract, helps maintain gut lining integrity, influences parts of the immune system that regulate gut permeability, and defends against problematic yeast and opportunistic bacteria. It's particularly well-studied for its role in managing antibiotic-associated diarrhoea and helping the gut recover faster after a course of medication.\u003c\/p\u003e\n\n  \u003cspan class=\"section-heading\"\u003eWhen to Reach for Saccharomyces Boulardii\u003c\/span\u003e\n\n  \u003cp\u003eThis is the probiotic for specific situations rather than everyday use. Dogs on antibiotics. Dogs recovering from a recent course of medication. Dogs with chronic loose stools that haven't responded to other probiotics. Dogs with yeast-related gut disruption. Dogs with recurring digestive upset where bacterial probiotics have been tried and come up short. For everyday probiotic maintenance, \u003ca href=\"\/products\/four-leaf-rover-protect-soil-based-probiotics\"\u003eProtect\u003c\/a\u003e is the better choice. For acute digestive flare-ups in dogs not on medication, \u003ca href=\"\/products\/four-leaf-rover-bifido-for-fido\"\u003eBiFido for Fido\u003c\/a\u003e delivers broader multi-strain coverage. S. Boulardii is the specialist tool.\u003c\/p\u003e\n\n  \u003cspan class=\"section-heading\"\u003eOrganic Inulin from Jerusalem Artichoke — Clean Prebiotic Fuel\u003c\/span\u003e\n\n  \u003cp\u003eMost probiotic supplements use maltodextrin as a bulking carrier — a highly processed, high-glycemic filler with no nutritional value. Four Leaf Rover's formula uses organic inulin from Jerusalem artichoke instead: a whole-food prebiotic that supports microbial diversity, encourages beneficial gut bacteria to flourish, and keeps the probiotic yeast viable during storage. Inulin is a soluble fibre that ferments slowly in the colon, providing steady prebiotic support without the glycemic spike.\u003c\/p\u003e\n\n  \u003cspan class=\"section-heading\"\u003eNo Maltodextrin — Why That Matters\u003c\/span\u003e\n\n  \u003cp\u003eMaltodextrin carries the highest glycemic index of any common food ingredient — higher than sugar. It's used in most probiotic supplements because it's cheap and bulks out the powder, but it contributes nothing of nutritional value and can work against the gut environment probiotics are trying to support. Four Leaf Rover makes a point of excluding it from every product in their range. Saccharomyces Boulardii contains no maltodextrin, no dextrins of any kind, no fillers, no flavours, and no preservatives.\u003c\/p\u003e\n\n  \u003cspan class=\"section-heading\"\u003eThird-Party Tested — Certificate of Analysis Per Batch\u003c\/span\u003e\n\n  \u003cp\u003eEvery batch of Saccharomyces Boulardii is third-party tested for pesticides, heavy metals, and microbial contaminants, with a Certificate of Analysis available on request. Four Leaf Rover holds the NASC Quality Seal — the benchmark for quality control in the pet supplement industry — and is certified Plastic Negative by rePurpose Global, removing twice the plastic from the environment that it creates. Manufacturing is GMP-compliant. Ingredients are sourced from trusted suppliers across New Zealand, North America, and Europe, with organic chosen wherever possible.\u003c\/p\u003e\n\n  \u003cspan class=\"section-heading\"\u003eIngredients\u003c\/span\u003e\n\n  \u003cp style=\"font-size: 12px; color: #888; margin-bottom: 8px;\"\u003eActive ingredients. Source: Four Leaf Rover.\u003c\/p\u003e\n\n  \u003cp\u003eSaccharomyces boulardii (probiotic yeast). Organic Inulin from Jerusalem Artichoke.\u003c\/p\u003e\n\n  \u003cp\u003e\u003cstrong\u003eFree from:\u003c\/strong\u003e maltodextrin, dextrins of any kind, preservatives, fillers, binders, synthetics, artificial flavourings, artificial colourings, GMO ingredients, gluten, and dairy.\u003c\/p\u003e\n\n  \u003cspan class=\"section-heading\"\u003eHow to Use\u003c\/span\u003e\n\n  \u003cp\u003eGive once or twice daily, mixed into food. Measure according to your dog's body weight using the guide below. For dogs on antibiotics, twice-daily dosing alongside the medication is recommended throughout the course.\u003c\/p\u003e\n\n  \u003cdiv class=\"flr-table-wrap\"\u003e\n    \u003ctable class=\"flr-table\"\u003e\n      \u003cthead\u003e\n        \u003ctr\u003e\n          \u003cth\u003eBody weight\u003c\/th\u003e\n          \u003cth\u003eDaily amount\u003c\/th\u003e\n        \u003c\/tr\u003e\n      \u003c\/thead\u003e\n      \u003ctbody\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eUp to 11 kg (25 lbs)\u003c\/td\u003e\n          \u003ctd\u003e⅛ tsp\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003e12–23 kg (26–50 lbs)\u003c\/td\u003e\n          \u003ctd\u003e¼ tsp\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003e23–34 kg (51–75 lbs)\u003c\/td\u003e\n          \u003ctd\u003e½ tsp\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003e34–45 kg (76–100 lbs)\u003c\/td\u003e\n          \u003ctd\u003e¾ tsp\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003e45+ kg (100+ lbs)\u003c\/td\u003e\n          \u003ctd\u003e1 tsp\u003c\/td\u003e\n        \u003c\/tr\u003e\n      \u003c\/tbody\u003e\n    \u003c\/table\u003e\n  \u003c\/div\u003e\n\n  \u003cp\u003e\u003cem\u003eA 49.5g jar typically lasts anywhere from around two weeks to several months depending on your dog's size and whether S. Boulardii is used during an antibiotic course, for acute support, or as an ongoing supplement.\u003c\/em\u003e\u003c\/p\u003e\n\n  \u003cdiv class=\"wl-callout\"\u003e\n    \u003cstrong\u003eCaution.\u003c\/strong\u003e\u003cbr\u003e\n    Safe use in pregnant or lactating dogs has not been proven. Dogs with compromised immune systems or yeast allergies should consult a veterinarian before use — although S. boulardii is a beneficial yeast distinct from Candida and other problematic yeasts, individual sensitivity varies. If your dog's condition worsens or doesn't improve, discontinue and consult your veterinarian.\n  \u003c\/div\u003e\n\n  \u003cspan class=\"section-heading\"\u003eStorage\u003c\/span\u003e\n\n  \u003cp\u003eRefrigerate after opening to preserve the probiotic yeast — S. boulardii is living and degrades faster at warmer temperatures. If refrigeration isn't possible, store in a cool, dark place and use within 30 days of opening. Keep the lid tightly sealed.\u003c\/p\u003e\n\n  \u003cspan class=\"section-heading\"\u003eFrequently Asked Questions\u003c\/span\u003e\n\n  \u003cdiv class=\"faq-block\"\u003e\n    \u003cp class=\"question\"\u003eWhat is the difference between Protect, Gut Guard, BiFido for Fido, and Saccharomyces Boulardii?\u003c\/p\u003e\n    \u003cp class=\"answer\"\u003eAll four support gut health but in different ways. Here is how they compare:\u003c\/p\u003e\n\n    \u003cdiv class=\"flr-table-wrap\" style=\"margin-top: 0.75rem;\"\u003e\n      \u003ctable class=\"flr-table\"\u003e\n        \u003cthead\u003e\n          \u003ctr\u003e\n            \u003cth\u003eFeature\u003c\/th\u003e\n            \u003cth class=\"center\"\u003eProtect\u003c\/th\u003e\n            \u003cth class=\"center\"\u003eGut Guard\u003c\/th\u003e\n            \u003cth class=\"center\"\u003eBiFido for Fido\u003c\/th\u003e\n            \u003cth class=\"center\"\u003eS. Boulardii ★\u003c\/th\u003e\n          \u003c\/tr\u003e\n        \u003c\/thead\u003e\n        \u003ctbody\u003e\n          \u003ctr\u003e\n            \u003ctd class=\"bold\"\u003eSpore-forming soil-based probiotics\u003c\/td\u003e\n            \u003ctd class=\"center\"\u003e✓\u003c\/td\u003e\n            \u003ctd class=\"center\"\u003e✓\u003c\/td\u003e\n            \u003ctd class=\"center\"\u003e—\u003c\/td\u003e\n            \u003ctd class=\"center\"\u003e—\u003c\/td\u003e\n          \u003c\/tr\u003e\n          \u003ctr\u003e\n            \u003ctd class=\"bold\"\u003eProbiotic yeast (S. boulardii)\u003c\/td\u003e\n            \u003ctd class=\"center\"\u003e✓\u003c\/td\u003e\n            \u003ctd class=\"center\"\u003e—\u003c\/td\u003e\n            \u003ctd class=\"center\"\u003e✓\u003c\/td\u003e\n            \u003ctd class=\"center\"\u003e✓\u003c\/td\u003e\n          \u003c\/tr\u003e\n          \u003ctr\u003e\n            \u003ctd class=\"bold\"\u003eMulti-strain lactic-acid probiotics\u003c\/td\u003e\n            \u003ctd class=\"center\"\u003e—\u003c\/td\u003e\n            \u003ctd class=\"center\"\u003e—\u003c\/td\u003e\n            \u003ctd class=\"center\"\u003e✓\u003c\/td\u003e\n            \u003ctd class=\"center\"\u003e—\u003c\/td\u003e\n          \u003c\/tr\u003e\n          \u003ctr\u003e\n            \u003ctd class=\"bold\"\u003eHeavy metal \u0026amp; toxin clearance (chlorella, humic\/fulvic)\u003c\/td\u003e\n            \u003ctd class=\"center\"\u003e✓\u003c\/td\u003e\n            \u003ctd class=\"center\"\u003e—\u003c\/td\u003e\n            \u003ctd class=\"center\"\u003e—\u003c\/td\u003e\n            \u003ctd class=\"center\"\u003e—\u003c\/td\u003e\n          \u003c\/tr\u003e\n          \u003ctr\u003e\n            \u003ctd class=\"bold\"\u003eGut-lining herbs (marshmallow, slippery elm, licorice, L-glutamine)\u003c\/td\u003e\n            \u003ctd class=\"center\"\u003e—\u003c\/td\u003e\n            \u003ctd class=\"center\"\u003e✓\u003c\/td\u003e\n            \u003ctd class=\"center\"\u003e—\u003c\/td\u003e\n            \u003ctd class=\"center\"\u003e—\u003c\/td\u003e\n          \u003c\/tr\u003e\n          \u003ctr\u003e\n            \u003ctd class=\"bold\"\u003eSafe to give during antibiotics\u003c\/td\u003e\n            \u003ctd class=\"center\"\u003e✓\u003c\/td\u003e\n            \u003ctd class=\"center\"\u003ePartial\u003c\/td\u003e\n            \u003ctd class=\"center\"\u003ePartial\u003c\/td\u003e\n            \u003ctd class=\"center\"\u003e✓\u003c\/td\u003e\n          \u003c\/tr\u003e\n          \u003ctr\u003e\n            \u003ctd class=\"bold\"\u003eBest for\u003c\/td\u003e\n            \u003ctd\u003eDaily maintenance + environmental toxin clearance\u003c\/td\u003e\n            \u003ctd\u003eLeaky or irritated gut (60-day courses, then rotate)\u003c\/td\u003e\n            \u003ctd\u003eOccasional digestive distress\u003c\/td\u003e\n            \u003ctd class=\"bold\"\u003eShort-term use during or after antibiotics\u003c\/td\u003e\n          \u003c\/tr\u003e\n        \u003c\/tbody\u003e\n      \u003c\/table\u003e\n    \u003c\/div\u003e\n    \u003cp style=\"font-size: 12px; color: #888; margin-top: 0.5rem;\"\u003e★ You are viewing Saccharomyces Boulardii.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"faq-block\"\u003e\n    \u003cp class=\"question\"\u003eCan Saccharomyces Boulardii be given alongside antibiotics?\u003c\/p\u003e\n    \u003cp class=\"answer\"\u003eYes — this is one of the core reasons to choose S. Boulardii over a bacterial probiotic. Because it's a yeast, S. boulardii is not affected by antibiotics and can be given at the same time as the medication without any interaction concern. Four Leaf Rover specifically recommends S. Boulardii for dogs being treated with antibiotics or other gut-stressing drugs. Continue dosing throughout the antibiotic course and for at least two weeks afterwards to support full gut recovery.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"faq-block\"\u003e\n    \u003cp class=\"question\"\u003eIs S. boulardii the same as the yeast that causes infections in dogs?\u003c\/p\u003e\n    \u003cp class=\"answer\"\u003eNo. Saccharomyces boulardii is a distinct, beneficial species of probiotic yeast — genetically and functionally very different from Candida, Malassezia, and other problematic yeasts that cause ear, paw, and skin infections in dogs. In fact, S. boulardii is sometimes used to help defend against Candida overgrowth. Dogs with confirmed yeast infections can usually still take S. Boulardii safely, but consult your veterinarian if your dog has a history of yeast-related immune issues.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"faq-block\"\u003e\n    \u003cp class=\"question\"\u003eDo I need to give this long-term, or is it for short courses only?\u003c\/p\u003e\n    \u003cp class=\"answer\"\u003eS. Boulardii is a transient probiotic — it doesn't colonise the gut permanently, it works while it's present. Most dogs benefit from short-course use during and after antibiotic treatment, during episodes of digestive upset, or for a few weeks at a time to resolve recurring loose stools. Daily long-term use is also safe if your dog has chronic gut issues that respond well to it. For everyday probiotic maintenance without specific gut stressors, \u003ca href=\"\/products\/four-leaf-rover-protect-soil-based-probiotics\"\u003eProtect\u003c\/a\u003e is the better default choice.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"faq-block\"\u003e\n    \u003cp class=\"question\"\u003eCan I give S. Boulardii with other Four Leaf Rover probiotics?\u003c\/p\u003e\n    \u003cp class=\"answer\"\u003eYes. S. Boulardii can be combined with \u003ca href=\"\/products\/four-leaf-rover-protect-soil-based-probiotics\"\u003eProtect\u003c\/a\u003e, \u003ca href=\"\/products\/four-leaf-rover-gut-guard\"\u003eGut Guard\u003c\/a\u003e, or \u003ca href=\"\/products\/four-leaf-rover-bifido-for-fido\"\u003eBiFido for Fido\u003c\/a\u003e — they target different mechanisms and don't conflict. A common pairing: S. Boulardii alongside an active antibiotic course (the yeast survives where bacteria wouldn't), then transitioning to Protect or BiFido afterwards to rebuild the bacterial microbiome.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"faq-block\"\u003e\n    \u003cp class=\"question\"\u003eWhy does the ingredient list look so short?\u003c\/p\u003e\n    \u003cp class=\"answer\"\u003eBecause Four Leaf Rover chose to make this a clean single-strain product. Most probiotic supplements on the market bulk out their ingredient list with maltodextrin — a high-glycemic filler that adds no value — alongside various flavourings, preservatives, and stabilisers. Saccharomyces Boulardii contains just two things: the probiotic yeast itself, and organic inulin from Jerusalem artichoke as its whole-food prebiotic fuel. The short ingredient list is the point.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"faq-block\"\u003e\n    \u003cp class=\"question\"\u003eDoes Saccharomyces Boulardii need to be refrigerated?\u003c\/p\u003e\n    \u003cp class=\"answer\"\u003eYes — refrigeration after opening is recommended. S. boulardii is a living organism and keeps its potency best at cool temperatures. If refrigeration isn't possible, store in a cool, dark pantry and use within 30 days of opening. Unopened jars can be stored in a cool, dry place at room temperature.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"faq-block\"\u003e\n    \u003cp class=\"question\"\u003eIs Saccharomyces Boulardii suitable for puppies and small dogs?\u003c\/p\u003e\n    \u003cp class=\"answer\"\u003eYes, using the appropriate weight-based dose — starting at ⅛ tsp for dogs up to 11 kg. For very young puppies, consult your veterinarian first, particularly if the puppy is being treated with antibiotics. For adult small dogs, the ⅛ tsp dose is conservative and well-tolerated.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"faq-block\"\u003e\n    \u003cp class=\"question\"\u003eWhere can I buy Four Leaf Rover in Singapore?\u003c\/p\u003e\n    \u003cp class=\"answer\"\u003eWoof Living stocks the Four Leaf Rover range in Singapore. Shop online at woofliving.com with free delivery on orders above $49, or visit us in store at Wheelock Place, 501 Orchard Road #01-K3.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Four Leaf Rover","offers":[{"title":"Default Title","offer_id":44242600984851,"sku":"FL-SB","price":49.0,"currency_code":"SGD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2987\/2888\/files\/saccharomyces-boulardii-2789007.webp?v=1776841566","url":"https:\/\/woofliving.com\/products\/four-leaf-rover-saccharomyces-boulardii","provider":"Woof Living","version":"1.0","type":"link"}