If you are from commerce or arts, not a problem to take medical transcription. In medical transcription, English will dominate rather than medicine. If you are good at English, you can take up. Thousands(lakhs) of MTs are from commerce and arts only.
Initially, you will earn 6000 to 9000, once you are understanding dictation, then you can earn more. You can submit your request form at http://www.andhrascribe.com/
they will get back to you with details.
If you have doubts, you can view their group and understand what their members are discussing.