I Have Been Taking Doxycycline For About 3-4 Months To
Doesn't seem related to doxycycline.
Detailed Answer:
Hello dear, welcome to Ask a doctor's service.
I read your query and here is my advice.
I think that the erectile dysfunction and low libido you are having may not be related to doxycycline usage.
Doxycycline is not known to affect the sexual drive and activity.
Tell me if you are taking other supplements such anabolic steroids which are known to cause low libido and erectile dysfunction.
Taking vitamins such B3, B9,D,C, can help you with it. Also other supplements such horny goat weed is known to be a herbal supplement which increases libido, testosterone levels and improve erectile dysfunction.
Hope I have answered the question.
Let me know if I can assist you further.