Hello this is Mrs Dr. Cheng and not a Sir answering.
It is very kind of you to take care of this dog. You will need to clean his ears daily with medicated ear cleaner. Medicated ear wash should be available at a pet shop. All the rest of the medications are prescription medications.
Ear medications are: Baytril Otic, twice daily in ear; Otomax, twice daily in ear; or Mometamax once daily.
Oral antibiotics that would help would be: Cephalexin at a dose of 25mg per Kg. twice daily for at least 14 to 21 days. Other antibiotic choices are: Ciprofloxacin and Enrofloxacin (Baytril) at a dose of 5 to 10 mg per Kg. twice daily for Ciprofloxacin and once daily for Enrofloxacin (Baytril). Even Amoxicillin would help.
I do not know the size of this dog. Please give me an estimate and I would be glad to give you the proper dose. Could you also please let me know what antibiotics are available to you if different than the ones I have listed? I will tell you what is suitable and what the dose should be. The names may be different in India but the chemical name will be the same. In USA it is difficult to get prescription medications without a prescription, but it may be easier for you in India. There are human equivalents to the medications that I have mentioned here in case you can only locate the human products.
Please post again to answer the questions I have asked so that I can help you and the ear infected dog further. Thanks Dr. Cheng
Does the dog have a head tilt or other neurological symptoms? If not, than it may be unlikely that the maggots ate through his ear drum. It would not be safe to use any Otic solution if the ear drum is ruptured. In this case please just continue to clean the ear daily.
If there are any maggots left it would be best to use Capstar oral medication (or the equivalent) to eliminate them.
The medication that you gave is known as Clavamox in the US. It sounds as if you gave the proper dose for his size but he will need that medication twice daily for 2 to 3 weeks or until completely healed.
Is there a vet available that can just look into the ear with an otoscope?
one more thing to ask that may be maggots ate his ear drum or his ruptured ear drum then there any problem to put your suggested Ear medications are: Baytril Otic, twice daily in ear; Otomax, twice daily in ear; or Mometamax once daily?
Thanks for your reply size of dog is large i think he must be approx 35 to 40 kg
and u just give the chemical name will be the same in India Cephalexin also available here ,
i already gave him amoxycillin & potassium clavulannte tablets ip (Moxikind-cv 625mg) but only one tablet at first day not again if its work then i start it again? or start what u said above
Capstar oral medication i dont get any where here so i buy it from ebay but tell me how give dose i bought Capstar oral green for over 25 lbs 6 tab
1 tab in 24 hour or 12hour and how many days?please explain me so i can start right medication.
Thanks for your wonderful help now he doing well but after one week i seen dog have a head tilt so may there is maggots so i dont want to take any chance and here no otoscope to look inside into the ear