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.
Not all dogs are suitable for treatment with this medicine. Some of the common side effects can be uncomfortable, and it is known to cause abortion when given to pregnant pets (which is also the case with other glucocorticoids). It should not be given to any dogs under 6 months of age as the immunosuppressant properties could be damaging.