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.
Some studies suggest that if you use marijuana during pregnancy, your baby may have problems, including: 1  Premature birth. This is birth that happens too early, before 37 weeks of pregnancy. 2  Fetal growth restriction (also called growth-restricted, small for gestational age and small for date) and low birthweight.