Hello,
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Ofcourse MBBS is better then ayurveda.
If you are not willing to join mbbs then go for BAMS or BDS.
But remember only join if you don't want to join mbbs.
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Coming to ayurveda,it has gained a lot of scope These days,as its treatment is of natural way and believed that ayurvedic treatment which can't be done other.
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If you are going to join ayurveda then you can switch to these carrers.

• Surgeon
• Pharmacist
• Dietician
• Teacher
• Gynecologist

These are the career options for you if you are choosing ayurveda stream and salary will be 15k to 20k per annum.
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Best of luck