Sorry for late reply.
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You shouldn't take this medicine as this is not suitable for you.
As you have bacterial infection on leg so you can do some self care remedies to prevent further spreading of infection until you see a doctor.
Clean the site with betadine solution and then apply OTC Polysporin ointment and hydrocortisone cream 2-3 times a day.
Also take OTC Advil and Cetirizine which relieve pain,swelling,redness.
You should start multi-mineral & vitamin supplement.
Even elevate your leg.
If it's draining then Polysporin powder can be applied.Cover it with sterile bandage.
If it seems to be getting worse then visit ER.
Feel free for further queries. It's good to discuss rather than quit.
Your satisfaction is our goal.