- Weigh your dog before starting the treatment to ensure dosage accuracy.
- Administer orally once a month as directed.
- Offer the chewable either directly or by mixing with food.
- Ensure the full dose is consumed, and if a dose is missed, re-dose immediately.
- For optimal parasite control, treat your dog on or about the same day each month.
NexGard Spectra Dosage for Dogs
| Dog weight (lbs) |
Pack color |
Dog Size |
Afoxolaner per chew (mg) |
Milbemycin oxime per chew (mg) |
Number of chews per month |
| 4.4-7.7 |
Orange |
Very Small |
9.4 |
1.9 |
One |
| 7.7-16.5 |
Yellow |
Small |
18.8 |
3.8 |
One |
| 16.5-33 |
Green |
Medium |
37.5 |
7.5 |
One |
| 33-66 |
Purple |
Large |
75.0 |
15.0 |
One |
| 66-132 |
Red |
Extra Large |
150.0 |
30.0 |
One |
For dogs over 132 lbs, administer the appropriate combination of NexGard Spectra Chewables.