# NexGard (Afoxolaner) Dose for Dogs: Strengths & Dose Calculator

> NexGard is a monthly afoxolaner chewable for fleas and ticks in dogs and puppies from 8 weeks of age and 4 lb, at a minimum of 2.5 mg/kg. The chewable is chosen…

- Source page: https://wevet.in/vet-products/nexgard-afoxolaner/
- Type: Vet product
- Publisher: WeVet
- Updated: 2026-11-02
- Medically reviewed by: Dr. Ravi Baraiya, B.V.Sc. (2026-11-02)
- Audience: veterinarians and veterinary students

NexGard is a monthly afoxolaner chewable for fleas and ticks in dogs and puppies from 8 weeks of age and 4 lb, at a minimum of 2.5 mg/kg [1]. The chewable is chosen by weight band: 11.3, 28.3, 68 or 136 mg [1].

- Brand: NexGard
- Contains: Afoxolaner
- Company: Boehringer Ingelheim Animal Health
- Label species: Dogs
- Data from: USA (FDA label)

## Strengths

- NexGard chewables: Afoxolaner strength not confirmed (verified, [1])
  - 4–10 lb: NexGard 11.3 mg
  - 10.1–24 lb: NexGard 28.3 mg
  - 24.1–60 lb: NexGard 68 mg
  - 60.1–121 lb: NexGard 136 mg

## Dose by species

| Species | Use | Dose | Route | How often | Basis |
|---|---|---|---|---|---|
| Dogs | Fleas and ticks (Minimum dose.) | 2.5 mg/kg [1] | PO | Once a month | Label |

## Label directions

- Give orally once a month at a minimum of 2.5 mg/kg, using the chewable for the dog's weight band [1].

## Warnings and precautions

- Isoxazolines have been linked to tremors, ataxia and seizures, even in dogs without a seizure history — use with caution in dogs with seizures or neurologic disorders [1].
- Not evaluated in dogs under 8 weeks or under 4 lb [1].


Interactive dose calculator (strength prefilled only when confirmed): use the page link above.

## Frequently asked questions

### Which NexGard size for my dog?

4–10 lb: 11.3 mg; 10.1–24 lb: 28.3 mg; 24.1–60 lb: 68 mg; 60.1–121 lb: 136 mg; over 121 lb: a combination of chewables [1].

### How often is NexGard given?

Once a month [1].

## References

[1] NEXGARD (afoxolaner) chewable — label — DailyMed (US NLM) — FDA-approved label, Boehringer Ingelheim (2026). https://dailymed.nlm.nih.gov/dailymed/drugInfo.cfm?setid=e10f7434-d00c-44de-af79-7b0886b2e948

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Numbers in [brackets] cite the references above. For veterinary professionals. Information supports — never replaces — clinical judgement; always check the current product label and local regulations.
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