Ultimately, you can read news articles adn websites all you want, but the best way to know for sure is to talk to your doctor he/she will be able to tell you the correct dosage for you. That is the safest way.
I hope this was helpful!
I also think that it can be harmful. If you don't know a proper dose, you can easily check this info online. Personally I use Canadian Pharmacy Online to find out side effects, doses and contraindications of the meds I'm going to take.
It's called drug poisoning.
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