TevraPet FirstAct Plus Flea Treatment for Extra Large Dogs (89+ lbs) – 3 Doses, Fipronil-Based, Same Active Ingredients as Frontline Plus
TevraPet FirstAct Plus Flea Treatment for Extra Large Dogs (89+ lbs) – 3 Doses, Fipronil-Based, Same Active Ingredients as Frontline Plus
TevraPet FirstAct Plus is a topical flea and tick treatment for extra large dogs weighing 89 pounds and over. Each pack contains three monthly doses of fipronil-based drops that kill fleas, ticks, flea eggs, larvae, and chewing lice on contact. This product uses the same active ingredients as Frontline Plus but at a lower price point, making it a cost-effective option for giant-breed owners seeking reliable parasite control.
How it works and what it covers
Each application delivers fipronil and an insect growth regulator to break the flea life cycle. The formula is waterproof, so it stays effective after swimming or bathing. Protection lasts up to 30 days per dose. It repels and kills fleas and ticks before they can bite, helping to stop reinfestations.
Who it's for
This treatment is formulated for extra large dogs—those over 89 pounds. It is suitable for all life stages, from puppies to seniors, but check with your vet before using on very young or pregnant dogs. The drops are applied topically between the shoulder blades, where your dog cannot lick them off.
Key product details
| Active Ingredient | Fipronil |
| Form | Topical drops |
| Doses per pack | 3 (each dose covers 30 days) |
| Weight range | 89+ lbs (extra large / giant) |
| Item Volume | 0.41 fl oz (total pack) |
| Item Weight | 1.25 oz |
| Product Dimensions | 0.4 x 0.5 x 2 in |
| Manufacturer | Tevra Brands (USA) |
| Model Number | 00015 |
What buyers often ask
Is this the same as Frontline Plus?
Yes. FirstAct Plus contains the same active ingredients (fipronil and an insect growth regulator) as Frontline Plus. The key difference is the brand and price—this is a more affordable alternative.
How often do I apply it?
One tube per month. The pack provides a three-month supply.
Is it waterproof?
Yes. The formula is designed to stay effective even if your dog gets wet or bathed regularly.
Can I use it on my puppy or senior dog?
The product is labeled for all life stages, but we recommend consulting your veterinarian before use on very young, elderly, or sensitive pets.
Made in the USA with a satisfaction guarantee
Every dose of FirstAct Plus is manufactured in the United States and tested for quality and potency. TevraPet backs it with a guarantee: if you or your dog are not satisfied, contact them for a refund.