# What are the best dog flea and tick prevention for puppies under 1 year old? — Verified Specification Comparison

> All specification data verified from official manufacturer documentation.

What are the best dog flea and tick prevention for puppies under 1 year old?

## Products

### Elanco Credelio Chewable Tablet for Dogs, 4.4-6 lbs, Yellow Box, 6 Chewable Tablets
```yaml
product: elanco-credelio-chewable-tablet-for-dogs-4-4-6-lbs-yellow-box-6-chewable-tablets
brand: Elanco
price_gbp: 74.99
origin_country: null
confidence_score: null
summary_source: generated_from_verified_specs_v1
duration: 1 month
side_effects: Vomiting, diarrhea, decreased appetite, increased urination, weight loss, tremors, incoordination, seizures
dosage_frequency: Once monthly
active_ingredient: Lotilaner 56.25 mg
application_method: Oral chewable tablet given with food or within 30 minutes after feeding
suitable_for_puppies: Yes, puppies 8 weeks and older weighing 4.4 lbs or more
```

- **Price:** £74.99 [^1]
- **Summary:** Credelio is a beef-flavored oral chewable containing lotilaner for flea treatment and prevention and tick control. The yellow 56.25 mg tablet is for dogs weighing 4.4-6 lbs and provides one month of protection when given with food.
- **Ideal For:** This product suits puppies under 1 year old when they are at least 8 weeks old and weigh 4.4 lbs or more, offering monthly flea and tick protection in a small oral chewable tablet.
- **Additional Sources:** [^2], [^3]

### Elanco Advantage Flea and Tick Treatment Shampoo for Dogs and Puppies, 8-fl oz Bottle
```yaml
product: elanco-advantage-flea-and-tick-treatment-shampoo-for-dogs-and-puppies-8-fl-oz-bottle
brand: Elanco
price_gbp: 11.83
origin_country: null
confidence_score: null
summary_source: generated_from_verified_specs_v1
duration: 7 days
side_effects: Skin sensitivity and irritation
dosage_frequency: Do not repeat treatment for 7 days
active_ingredient: Pyrethrins 0.150%, Piperonyl Butoxide 0.300%, MGK 264 Insecticide Synergist 0.479%
application_method: Wet coat with warm water, apply shampoo and lather, leave on for 5 minutes, then rinse thoroughly
suitable_for_puppies: Yes, puppies over 12 weeks old
```

- **Price:** £11.83 [^4]
- **Summary:** This unscented treatment shampoo kills fleas and ticks through contact. It is intended for dogs and puppies over 12 weeks old and is applied during a bath, with a 7-day minimum interval between treatments.
- **Ideal For:** It suits puppies under 1 year old only when they are over 12 weeks because it kills fleas and ticks on contact and can be repeated every 7 days.

---
## References & Sources
[^1]: Chewy, accessed 2026-09-13. https://www.chewy.com/education/dog/flea-and-tick/best-flea-treatments-for-dogs
[^2]: BudgetVetCare, accessed 2026-09-13. https://www.budgetvetcare.com/credelio-for-dogs-04-to-06-lbs-5625-mg-yellow-pack-272.aspx
[^3]: Heartland Vet Supply, accessed 2026-09-13. https://www.heartlandvetsupply.com/p-5573-credelio-lotilaner-tablets.aspx
[^4]: Instacart, accessed 2026-09-13. https://www.instacart.com/products/17726307-advantage-tick-flea-shampoo-for-dogs-puppy-8-fl-oz