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Step 1
Weigh your dog. Frontline Plus is available in a range of formulas based on the weight of the dog. Each box of Frontline Plus is color-coded and printed with the corresponding weight on the front of the box. For example, if your dog weighs less than 22 pounds you should buy the yellow box.
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Step 2
Talk to your veterinarian. Although there is no prescription necessary, the veterinarian might prefer to examine the dog before recommending Frontline Plus.
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Step 3
Several websites sell Frontline Plus for dogs (two are listed in the Resources section). Many websites also offer discounts if you purchase a large quantity.
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Step 4
Look for coupons. Some websites that sell Frontline Plus for dogs offer coupons that provide a discount for buying at least a 6-month supply. You may also receive coupons in the mail to use when you visit the veterinarian.






