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Does smoking marijuana affect penis size?


The following is an actual conversation between an iCliniq user and a doctor that has been reviewed and published as a Premium Q&A.

Medically reviewed by

iCliniq medical review team

Published At March 10, 2024
Reviewed AtMarch 10, 2024

Patient's Query

Hello doctor,

I am a 24-year-old bisexual male. I have been smoking marijuana for one year. I have noticed a strange sexual problem and I guess it is due to the oral sex I gave to a man and drank his semen six months ago. After smoking marijuana the next day, I had seizures, and at night for some time, my penis expanded more than its usual erect size. In the morning I felt shrinking pressure on my penis that continued for three to four days. Now my penis has shrunken in size. I also have limp erections and no ejaculations or morning erections. Since six months, I have been frequently peeing, and also had a white coat all over the tongue, along with fever, and fatigue. I got tested for HIV and VDRL and both were negative. Despite all the blood work being normal, I am not getting my usual length of erection. Kindly help.

Thank you.


Welcome to icliniq.com.

I can understand your concern.

The size of the penis does not increase or decrease in length once an individual achieves puberty. Marijuana is known to precipitate seizures in a lot of individuals but this does not affect the size of the penis.

Probably the fear of getting some sexually transmitted illness has resulted in significant stress and this is resulting in anxiety and the flaccid size appearing small to you. The erection is less because of anxiety and stress. Try to remain relaxed and avoid thinking that you have any sexual problems. Just avoid unprotected sexual encounters in the future and you will see improvement in your anxiety. For poor erection medications like Sildenafil or Tadalafil can be used. Either of these drugs are safe to use and have no serious side effects.

Kindly consult a psychiatrist for an opinion regarding your problem and take the proper prescription of medicines.

I hope this information will help you.

Thank you.

Same symptoms don't mean you have the same problem. Consult a doctor now!

Dr. Seikhoo Bishnui
Dr. Seikhoo Bishnui


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