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.
A drugâs effects on the fetus depend on many things: how much, how often, and when during pregnancy it is used. The early stage of pregnancy is the time when main body parts of the fetus form. Using drugs during this time in pregnancy can cause birth defects and miscarriage.