CVM is especially concerned that pet owners are going online to buy two types of commonly used prescription veterinary drugsânonsteroidal anti-inflammatory drugs (NSAIDs) and heartworm preventives. Both drugs can be dangerous if there is no professional involvement, says Hartogensis.
Fetal growth may be further impaired by the tendency of marijuana to increase the heart rate and blood pressure28 of the mother, thus reducing placental blood flow to the fetus. In addition, cocaine and marijuana, when used together, may exert a synergistic effect on both heart rate and blood pressure.29.
It is difficult to be certain about the specific effects of marijuana on pregnancy and the developing fetus, in part because those who use it often use other drugs as well, including tobacco, alcohol, as well as the influence of social and genetic factors13, and ethical and practical problems in conducting prospective longitudinal studies.