{"product_id":"heartworm-tablets-for-dogs-heartworm-prevention-for-dogs","title":"Heartworm Tablets for Dogs - Heartworm Prevention for Dogs","description":"\u003cstyle\u003e\n.pmm-hw{--navy:#17324d;--blue:#eaf5ff;--teal:#e9f8f5;--gold:#fff6dc;--rose:#fff0f0;--ink:#24313d;--line:#dce5ec;color:var(--ink);font-family:inherit;line-height:1.65;max-width:920px;margin:0 auto;overflow-wrap:break-word}\n.pmm-hw *{box-sizing:border-box}\n.pmm-hw h2,.pmm-hw h3{color:var(--navy);line-height:1.25}\n.pmm-hw h2{font-size:clamp(1.5rem,5vw,2.05rem);margin:0 0 12px}\n.pmm-hw h3{font-size:clamp(1.15rem,4vw,1.4rem);margin:0 0 10px}\n.pmm-hw p{margin:0 0 12px}\n.pmm-hw ul,.pmm-hw ol{margin:8px 0 0;padding-left:22px}\n.pmm-hw li{margin:5px 0}\n.pmm-hw a{color:#075f9c;font-weight:700;text-underline-offset:3px}\n.pmm-hw .pmm-card{border:1px solid var(--line);border-radius:16px;padding:clamp(16px,4vw,24px);margin:18px 0;background:#fff;box-shadow:0 4px 16px rgba(23,50,77,.06);min-width:0;overflow:hidden}\n.pmm-hw .pmm-blue{background:var(--blue)}\n.pmm-hw .pmm-teal{background:var(--teal)}\n.pmm-hw .pmm-gold{background:var(--gold)}\n.pmm-hw .pmm-warning{background:var(--rose);border:2px solid #d33b3f;border-left-width:8px;border-radius:14px;padding:16px;margin:0 0 18px}\n.pmm-hw .pmm-warning strong{color:#8e171b}\n.pmm-hw .pmm-fit{background:#edf9ef;border:1px solid #8bc89a;border-radius:12px;padding:12px 14px;margin-top:12px}\n.pmm-hw .pmm-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;margin:18px 0}\n.pmm-hw .pmm-grid .pmm-card{margin:0}\n.pmm-hw .pmm-table-wrap{width:100%;overflow-x:auto;-webkit-overflow-scrolling:touch}\n.pmm-hw table{width:100%!important;max-width:none!important;border-collapse:separate!important;border-spacing:0;border:1px solid #bfd0dc!important;border-radius:12px;overflow:hidden;background:#fff}\n.pmm-hw th,.pmm-hw td{padding:12px!important;text-align:left;border:0!important;border-bottom:1px solid #dce5ec!important;vertical-align:top}\n.pmm-hw th{background:var(--navy);color:#fff}\n.pmm-hw tr:last-child td{border-bottom:0!important}\n.pmm-hw details{background:#fff;border:1px solid var(--line)!important;border-radius:12px!important;margin:10px 0;overflow:hidden}\n.pmm-hw summary{cursor:pointer;font-weight:700;color:var(--navy);padding:14px 16px!important}\n.pmm-hw details\u003ediv{padding:0 16px 14px!important}\n.pmm-hw .pmm-small{font-size:.92rem;color:#4d5d69}\n@media(max-width:640px){.pmm-hw .pmm-grid{grid-template-columns:1fr}.pmm-hw .pmm-card{border-radius:13px}.pmm-hw table{font-size:.94rem;min-width:420px}.pmm-hw th,.pmm-hw td{padding:10px 8px!important}}\n\u003c\/style\u003e\n\u003csection class=\"product-description heartworm-tablets-for-dogs pmm-hw\"\u003e\n\u003cdiv class=\"pmm-card pmm-blue\"\u003e\n\u003ch2\u003eHeartworm Tablets for Dogs\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eHeartworm prevention for dogs\u003c\/strong\u003e on this listing is a once-monthly ivermectin tablet, one by weight (up to 25 \/ 26–50 \/ 51–100 lb), to help prevent canine heartworm disease caused by \u003cem\u003eDirofilaria immitis\u003c\/em\u003e.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"pmm-grid\"\u003e\n\u003cdiv class=\"pmm-card pmm-teal\"\u003e\n\u003ch3\u003eQuick product facts\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eBrand: Vetafarm\u003c\/li\u003e\n\u003cli\u003eUse stated: one correctly sized tablet each month\u003c\/li\u003e\n\u003cli\u003eDoes not treat established adult heartworms\u003c\/li\u003e\n\u003cli\u003eDogs six weeks of age and older when used according to the label\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"pmm-card pmm-gold\"\u003e\n\u003ch3\u003eMonthly use\u003c\/h3\u003e\n\u003cp\u003eHeartworms are transmitted through the bite of an infected mosquito. Monthly prevention is described as eliminating susceptible immature larvae acquired during the preceding month before they develop into adult heartworms.\u003c\/p\u003e\n\u003cp class=\"pmm-small\" style=\"margin-bottom:0;\"\u003eGive the tablet on the same date each month. Oral use, or crushed into food only when the product directions permit it. Do not substitute strengths or divide tablets unless the label or a veterinarian expressly allows it.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"pmm-warning\" role=\"alert\"\u003e\n\u003cp\u003e\u003cstrong\u003eTest first:\u003c\/strong\u003e Dogs should be tested for existing heartworm infection before prevention starts. These tablets do not eliminate established adult heartworms. Contact a veterinarian if status is unknown or monthly use has been interrupted.\u003c\/p\u003e\n\u003cp style=\"margin-bottom:0;\"\u003e\u003cstrong\u003eDogs only.\u003c\/strong\u003e Do not use in puppies younger than six weeks of age. Not for human use. Seek veterinary help if vomiting, diarrhea, weakness, incoordination, tremors, or other unusual signs occur after a dose.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"pmm-card\"\u003e\n\u003ch3\u003eDirections as listed\u003c\/h3\u003e\n\u003cdiv class=\"pmm-table-wrap\" role=\"region\" tabindex=\"0\"\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eDog size\u003c\/th\u003e\n\u003cth\u003eWeight range listed\u003c\/th\u003e\n\u003cth\u003eMonthly dose\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSmall\u003c\/td\u003e\n\u003ctd\u003eUp to 25 lb (11.3 kg)\u003c\/td\u003e\n\u003ctd\u003e1 Small tablet\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMedium\u003c\/td\u003e\n\u003ctd\u003e26–50 lb (11.8–22.7 kg)\u003c\/td\u003e\n\u003ctd\u003e1 Medium tablet\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLarge\u003c\/td\u003e\n\u003ctd\u003e51–100 lb (23.1–45.4 kg)\u003c\/td\u003e\n\u003ctd\u003e1 Large tablet\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOver 100 lb\u003c\/td\u003e\n\u003ctd\u003eOver 100 lb (45.4 kg)\u003c\/td\u003e\n\u003ctd\u003eAppropriate combination of weight-specific tablets, per label or veterinary directions\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cp class=\"pmm-small\"\u003eConfirm your dog’s current weight and follow the pack you receive. Do not give extra doses to make up a missed tablet without veterinary guidance.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"pmm-card pmm-teal\"\u003e\n\u003ch3\u003eOptions and prices on this listing\u003c\/h3\u003e\n\u003cp\u003eVariant labels on this listing differ slightly from the chart above. Small and Medium include 6, 20, and 100 tablet options. Large is 6 or 20 tablets. Large 100-tablet is not a current option.\u003c\/p\u003e\n\u003cdiv class=\"pmm-table-wrap\" role=\"region\" tabindex=\"0\"\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eListing option\u003c\/th\u003e\n\u003cth\u003ePrice\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSmall (Up to 24 lb) \/ 6 Tablets\u003c\/td\u003e\n\u003ctd\u003e$18.95\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSmall (Up to 24 lb) \/ 20 Tablets\u003c\/td\u003e\n\u003ctd\u003e$44.95\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSmall (Up to 24 lb) \/ 100 Tablets\u003c\/td\u003e\n\u003ctd\u003e$119.50\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMedium (25-50 lb) \/ 6 Tablets\u003c\/td\u003e\n\u003ctd\u003e$20.95\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMedium (25-50 lb) \/ 20 Tablets\u003c\/td\u003e\n\u003ctd\u003e$32.95\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMedium (25-50 lb) \/ 100 Tablets\u003c\/td\u003e\n\u003ctd\u003e$134.00\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLarge (51 - 99 lb) \/ 6 Tablets\u003c\/td\u003e\n\u003ctd\u003e$16.79\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLarge (51 - 99 lb) \/ 20 Tablets\u003c\/td\u003e\n\u003ctd\u003e$46.59\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cp class=\"pmm-small\"\u003eMatch the option to the weight range on the pack you receive. The written chart uses up to 25 \/ 26–50 \/ 51–100 lb. The option labels use up to 24 \/ 25–50 \/ 51–99 lb. No milligram strength is stated.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"pmm-card pmm-gold\"\u003e\n\u003ch3\u003eOther points\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eFor use in dogs only\u003c\/li\u003e\n\u003cli\u003eListed for pregnant or breeding females, stud dogs, and puppies six weeks or older as monthly ivermectin heartworm-prevention tablets. Confirm that on the label of the exact product supplied\u003c\/li\u003e\n\u003cli\u003eNo milligram strength is stated\u003c\/li\u003e\n\u003cli\u003eStore below 30°C (86°F), unless the package states otherwise, in a cool dry place, container closed, original label kept\u003c\/li\u003e\n\u003cli\u003eTell your veterinarian about all medications and supplements the dog receives\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"pmm-card\"\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhich tablet size do I use?\u003c\/summary\u003e\n\u003cdiv\u003eSmall up to 25 lb (11.3 kg), Medium 26–50 lb (11.8–22.7 kg), Large 51–100 lb (23.1–45.4 kg), one matching tablet each month. Dogs over 100 lb need a combination per the label or a veterinarian. Listing option labels use Up to 24 lb, 25-50 lb, and 51-99 lb — follow the pack you receive.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eHow often are they given?\u003c\/summary\u003e\n\u003cdiv\u003eOne correctly sized tablet once each month. They may be given orally or crushed into food when the product directions permit it.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat packs are on this listing?\u003c\/summary\u003e\n\u003cdiv\u003eSmall and Medium are described as 6, 20, or 100 tablets. Large is 6 or 20 tablets. Large 100-tablet is not a current option. Prices are on the table above.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eDo these tablets treat adult heartworms?\u003c\/summary\u003e\n\u003cdiv\u003eNo. Monthly prevention does not treat established adult heartworms. A dog with heartworm disease needs veterinary evaluation and a treatment plan.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat active drug and strength are listed?\u003c\/summary\u003e\n\u003cdiv\u003eThe safety text refers to monthly ivermectin heartworm-prevention tablets. It does not state a milligram strength or a full active-ingredient panel. Confirm the pack you receive.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eCan puppies take them?\u003c\/summary\u003e\n\u003cdiv\u003eNot for dogs under six weeks of age. They are for dogs six weeks or older when used according to the label. Ask a veterinarian before starting a puppy.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"pmm-card pmm-blue\"\u003e\n\u003cdetails class=\"product-disclaimer\" open=\"\"\u003e\n\u003csummary\u003e\u003cstrong\u003eImportant Safety Notice\u003c\/strong\u003e\u003c\/summary\u003e\n\u003cdiv\u003e\n\u003cp\u003eFor use in dogs only. Not for human use.\u003c\/p\u003e\n\u003cp\u003eTest for existing heartworm infection before starting. These tablets are not an adult-heartworm treatment.\u003c\/p\u003e\n\u003cp\u003eDo not use in puppies younger than six weeks. Choose the tablet that matches current weight. Do not divide or substitute strengths unless the label or a veterinarian specifically directs it.\u003c\/p\u003e\n\u003cp\u003eKeep tablets out of reach of children and animals. Follow the label of the product received.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n\"@context\": \"https:\/\/schema.org\",\n\"@type\": \"FAQPage\",\n\"mainEntity\": [\n{\n\"@type\": \"Question\",\n\"name\": \"Which tablet size do I use?\",\n\"acceptedAnswer\": {\n\"@type\": \"Answer\",\n\"text\": \"Small up to 25 lb (11.3 kg), Medium 26-50 lb (11.8-22.7 kg), Large 51-100 lb (23.1-45.4 kg), one matching tablet each month. Dogs over 100 lb need a combination per the label or a veterinarian. Listing option labels use Up to 24 lb, 25-50 lb, and 51-99 lb.\"\n}\n},\n{\n\"@type\": \"Question\",\n\"name\": \"How often are they given?\",\n\"acceptedAnswer\": {\n\"@type\": \"Answer\",\n\"text\": \"One correctly sized tablet once each month. 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