Deworm不需要那么频繁，只有查到狗狗粪便内有寄生虫卵时才需要，见内

Deworm有许多副作用，下边链接这篇文章的第二页说的比较清楚。也就是说在deworm之前，必须先做检查，有必要才吃药，否则就不需要

pets.webmd.com/dogs/deworming-dogs-puppies

Most veterinarians recommend that adult dogs be dewormed only when there is specific reason to do so, such as when eggs or parasites are found during a fecal examination. Dogs can also be kept on a yearlong heartworm preventive that also protects against many of the intestinal parasites. All dogs should have a fecal examination done at least once a year.

Most dogs carry ascarids as encysted larvae, but intestinal infestation by the adult worm is rare in the healthy dog. Hookworms are likely to be a problem in adults only during periods of stress. Only milbemycin (Interceptor) is effective against encysted hookworm larvae.

下边是deworming对狗狗的副作用
www.ehow.com/facts_5523289_side-effects-worming-dogs.html

所有跟帖： 

• 那就每年夏天6片revolution?副作用小，还防flea. 觉得vet给的这广谱deworm的药有点多余。 -COOOLCANADA- ♀ (0 bytes) () 04/15/2014 postreply 10:15:49

• 狗狗经常出门吗？出门是否乱吃乱咬？一般防皮毛寄生虫即可。至少丘丘除了必打的 -Churchill- ♀ (123 bytes) () 04/15/2014 postreply 10:21:59

• 每天出门。什么是必打的？Frontline是和revolution差不多的？ -COOOLCANADA- ♀ (0 bytes) () 04/15/2014 postreply 10:31:11

• 我自己给丘丘定下的核心疫苗是Canine Distemper和Rabies, -Churchill- ♀ (380 bytes) () 04/15/2014 postreply 11:16:32

• 对，作用是一样的。我的Vet建议用Frontline，因为其中不含有一种有害成分 -Churchill- ♀ (86 bytes) () 04/15/2014 postreply 11:19:10