The drugs cause desired short-term disruptions in the brain, but they also cause undesirable long-term changes to the brain and other vital organs in the body, leading to drug addiction. Common drug addictions include: 1  Marijuana. 2  Heroin. 3  Cocaine/crack. 4  Synthetic drugs such as bath salts and spice.
1 Penicillin G, common vet prescriptions known as CrystacillinÂ® or Flo-CillinÂ®, is an antibiotic used to treat and prevent bacterial infections in dogs and cats. 2  This is a natural penicillin and is cultured from the bacteria Penicillium chrysogenum.
Oral Antibiotics. Occasionally a dog requires additional antibiotics, particularly for more persistent, hardy forms of bacteria such as Pseudomonas aeruginosa. Oral antibiotics in the quinolone class, such as enroflaxin and orbiflaxcin are effective at taking on more resistant bacteria. Cephalexin can be useful for stubborn ear infections.