Epsiprantel: (Cestex) Treatment of choice for tapeworms (2 types) in dogs and cats available by prescription. The drug paralyzes the tapeworm causing it to lose its attachment to the host’s (pet's) intestine and also causing the tapeworm to become susceptible to digestion by the host so that it is not seen in the stool after treatment. Usual Dose and Administration: Dog 2.5 mg/pound by mouth once. Cats 1.25 mg/pound by mouth once. No need to withhold food before treating. The treatment may need to be repeated if the pet eats an infected  intermediate host again. Intermediate hosts the flea, dog louse, rabbit, rodent, uncooked or undercooked meats (like beef, lamb, pork, and venison), uncooked or undercooked fish, and dead livestock/wildlife. Side Effects:   Rare. May see vomiting or diarrhea. Use with caution in pregnant or nursing animals although detrimental effects would be unlikely as the drug is not well absorbed into the body. There are no known drug interactions and there is a wide margin of safety.

Reference: http://www.pfizerah.com/PAHimages/compliance_pdfs/US_EN_CE_compliance.pdf

Fenbendazole (FBZ, Panacur, Safe-Guard): Fenbendazole is used in both large and small animals. Treatment is necessary for three consecutive days. Treatment may require a second course depending on which parasite is being treated. In dogs, it is useful against roundworms, hookworms, and the more difficult to treat whipworms. It is effective against some Taenia species of tapeworm but not against the common tapeworm Dipylidium caninum. It is also effective against Giardia, a protozoan and several species of lungworm and even some flukes. Fenbendazole is not approved and rarely required for feline use but can certainly be used safely in the cat. I’ve used it for lungworm in several cases over the years. Side Effects: There are no significant drug interactions with FBZ, but some animals experience vomiting/nausea after deworming. It is considered safe for use in pregnancy.

Reference for Fenbendazole: http://www.drgecko.com/parasiticide.htm#Fenbendazole%20-%20Panacur

Reference: http://en.wikipedia.org/wiki/Mebendazole

Niclosamide (Nicloside) is used for treating tapeworms.

Reference: http://en.wikipedia.org/wiki/Niclosamide

Praziquantel (Bilitricide, Cesol, Cysticide, Cestaject, Cest-tabs, Profender, Droncit, D-Worm, Tape Worm Tabs, Prazi Pro) is used for most flatworms (trematodes or flukes) and is also used to treat Schistosomaisis (an African disease) and tapeworms. Praziquantel has only recently been available without prescription. This drug is available as a pill or as an injection for pets. Once administered, Praziquantel will dissolve the tapeworm within the intestine, so this worm is not usually seen passed in the stool. Most veterinarians will dispense this medication to current patients (seen within the last 12 months). Your veterinarian may want to see your pet for an accurate weight, as this medication is dosed according to weight.

Pyrantel Pamoate (Equi-Phar, Pro-Tal, Strongid-T, Nemex, and the human brand names: Antiminth, Pin-X, Reese's Pinworm Medicine) Pyrantel pamoate kills adult pinworms. It does not kill pinworm eggs. Pyrantel pamoate is a nonprescription medication commonly used for pinworm infections. It is taken once a definite diagnosis of pinworms has been made by either seeing the worms or doing a transparent cellophane tape test.

In my opinion, the safest, cheapest, easiest, most effective way to worm yourself and your pets of the most common worms (roundworms/ pinworms) is to go to the local feed store and get a bottle of horse or dog roundwormer—Equi-Phar, ProTal, Strongid-T, and Nemex are all trade names of Pyrantel Pamoate. Make sure it says Pyrantel Pamoate on the label and nothing else added. Combination wormers are not always needed and not always safe.  

Use the dose of 5-10 mg/kilogram bodyweight for dogs and humans and 1 ½ times that dose for cats. If you are not good at math, you’ll want to double-check that you are taking the correct dosage with someone who can help you. Although this wormer is so safe that you can take 40 times the amount with no harmful side effects, you don’t want to under-dose or overdose. And, “If a little is good, a LOT is not necessary better.”

If you feel a slight nausea after taking it, eat a few crackers to settle your stomach. Sometimes the worms dying off will cause a bit of nausea.

SIDE EFFECTS of pyrantel pamoate are not very common but may include: Nausea, vomiting, abdominal cramps, and diarrhea. These are the most commonly seen side effects. But one can also experience transient headache, dizziness, and sleeplessness or develop a slight rash in some cases.  If side effects develop after the initial dose, a second dose (normally taken in about two weeks) should not be taken without talking with a health professional. Pyrantel pamoate can be taken with food, milk, or juice, or on an empty stomach. Because pinworm eggs can survive for 2 weeks after treatment with pyrantel pamoate, reinfection can occur. Treatment with a second dose is usually recommended. Do not give pyrantel pamoate to pregnant women, breast-feeding women, or children younger than age 2 without first talking with a health professional. Pyrantel pamoate gets rid of pinworm infections more than 90% of the time. However, reinfection with pinworms is very common.

Reference: http://health.yahoo.com/ency/healthwise/hw49694

Pyrvinium pamoate

Sulfadimethoxine (Albon®, Bactrovet®, or Tribrissen®) is a Sulfamonaide drug. Sufas act as both antibiotic and coccidiostats. Straight sulfa drugs when first discovered caused severe side-affects and were hard on the kidneys. Nowadays, comparatively small amounts of sulfamonaides, such as sulfaquinoxaline, are used. They work only against Eimeria acervulina and Eimeria maxima, not against Eimeria tenella.

Quinacrine

Quinolones: Quinolones are “coccidiostats” that arrest the Coccidia in an early stage of development. An example is Decoquinate (Deccox®). The drugs are used for prevention.

Thiabendazole (TBZ, Mintezol, Tresederm) is used for roundworms, hookworms and helminthes (which includes lice, fleas and ear mites) 

Reference: http://en.wikipedia.org/wiki/Thiabendazole