Was Just Diagnosed With Hyperthyroidism...and Have Been Prescribed A Generic

Was just diagnosed with hyperthyroidism...and have been prescribed a generic form of synthroid. Would it be better to take Actalin instead? or Armour Brand? or Nature Thyroid? Can I take Actalin with any of these other thyroid meds? Know these are several questions in one, so thank you for taking time to give your opinion.