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.
There are no known major side effects for melatonin when given to dogs. Even where melatonin has been given to dogs over an extended period there have not been many reports of adverse reactions. So to all intents and purposes melatonin is quite safe for dogs. That said, itâs not advisable to give melatonin to very young dogs. Nor should it be given to pregnant dogs.