I'm wondering if two medicines share the same active ingredients, do they share the same effect?
For example I have 2 medicines that have the same active ingredients but different in amount:
Medicine 1: 250mg Atovaquone and 100mg Proguanil HCl
Medicine 2: 62,5mg Atovaquone and 25mg Proguanil HCl
Do they share the same effect? If my prescription contain the first one but I can't buy it, can I replace it by the second one?
Should I care about thing like allergy (or anything) that cause by the minor ingredients of the medicine?
Thank you very much.