1 Hoarseness is an abnormal change in the voice. 2  The most common cause of hoarseness is acute laryngitis.  The underlying cause of hoarseness can usually be diagnosed by a health care professional based on the patient's history and physical exam.
The effects usually stop after 3 or 4 hours. Smoking pot can increase your heart rate by as much as two times for up to 3 hours. Thatâs why some people have a heart attack right after they use marijuana. It can increase bleeding, lower blood pressure, and affect your blood sugar, too.
Side Effects of Marijuana: Respiratory Issues. Medical Marijuana Side Effect: Respiratory Issues. Smoking marijuana releases tar, carbon monoxide and other chemicals, which may cause respiratory issues in medical marijuana patients. Also, smoking marijuana exacerbates problems for people who already have upper respiratory problems such as asthma, so people who already have lung problems are not advised to use marijuana by means of smoking it.