Helped Over 500,000 patients with 98%+ satisfaction.

Connect & Get Personalized 1-to-1 Answers from Expert Doctors

DoctorSpring > Question Home


Resolved Question:

Can Intramuscular AntiPsychotic medication(Risperidone depot injection) be administered in the Foot?. I have a doubt that I have been injected in the Foot (back side of the foot)?

Category: Psychiatrist

Ask Your Own Question

 19 Doctors Online

Thanks for posting your query at
I have gone through your question in detail and I can understand what you are you going through.
Long acting antipsychotic risperidal consta needs to be given intramuscular for its effect to persist for 2 weeks. Now the bulk of muscle is in the buttocks , thigh and shoulders. If its given in this place then the long acting medicine will work properly.

It is not given anywhere in the foot as there is no muscle mass and hence the medicine may not get absorbed.
Hope this helps.
In case if you need any further clarifications, do let me know.

Kind regards
Dr. Srikanth Reddy MD

Patient replied :

Thank you very much for your answer.
The problem is that I suspect that I have been injected with an AntiPsychotic (which one I am not sure) probably not Risperidone but that which could also be injected Subcutaneously (like fluphenazine decanoate).
Can such an Antipsychotic be injected Subcutaneously in the Feet? (like fluphenazine decanoate )


Fluphenazine decanoate can be given sub cutaneously but the most common site is again the front of thigh or the arms and forearms. The feet have a thick skin and less vasularity with lot of nerve endings. Making it very pain sensitive and also the absorption is not appropriate . So its not the usual accepted place if the doctor has option of other places to give.

Hope this helps
Kind regards
Dr. Srikanth Reddy MD

Patient replied :

Sorry just one more question I would like to ask.
If lets say I was injected with Prolixin standard dose in my feet how long would the effect last?. (considering feet does not have good absorption).

It may last for a maximum period of 3-4 weeks. There after the medicine deteriorates.

Patient replied :

is there any Test to identify Risperidone or Prolixin in body?. This is the last question.

Risperidon concentrations can be measured using HPLC but the facilities are there only in certain special labs. You may get the information from your local lab.

Dr. Srikanth Reddy

Dr. Srikanth Reddy
Category: Sexologist
Doctor of Medicine (MD), Psychiatry Residency Program,2001 – 2012
M.B.B.S,Mahatma Gandhi Institute Of Medical Sciences, Sevagram

Certificate Course in sex Therapy and Counselling, Sexology and Counselling, A
Sexology,Medikon Sexual Sciences, Mumbai

Training in Advanced Neurology at a leading corporate hospital (CARE hospital) in Hyderabad

Child Psychiatry Training in National Institute of Mental Health and Neuro-Sciences, Bangalore

Sex Therapy and Counsellingat MEDIKON Sexual Sciences, Mumbai.
Dr. Srikanth Reddy and 4 other Medical Specialists are ready to help you

Users who read this, also read:

Make informed and better medical decisions.

Join the 500,000 people who found a smarter, quicker way to get Answers, Recommendations & Expert Opinions.

Expert Doctors at fingertips

Recommendation on next step. Second-opinion.Multi-specialty.

Save Time

Average time for answers: 6 hours.

Save Money

$35 for typical specialist consult vs. $120 for a local appointment.

Free Follow-ups

Clarify, ask further questions for free in private conversation.

100% Satisfaction

Money back guarantee for the 1st reply. MEDNET Quality Board.

Start My Consultation



Doctor Spring is a novel online Doctor consultation platform where you can get your medical questions answered by leading Doctors. Just Submit your question and rest assured that you will consult a Doctor easily. Once you submit the question, the Doctor from the concerned specialty will reply within hours. You can always ask more questions or add details with follow-up question options and make it an online doctor chat. You may use this service to consult a specialty or for getting medical second opinion. All paid services come with a MEDNET quality assurance and 100% money back guarantee.

DoctorSpring in news