Identify TWO different diseases/disorders for which named drugs in use in the clinic target voltage-gated calcium (Cav)

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Identify TWO different diseases/disorders for which named drugs in use in the clinic target
voltage-gated calcium (Cav)
or voltage-gated sodium (Nav) channels.
For EACH disease,
d) Describe the
pathology
associated with the disease/disorder and identify the channeltargetted;
How the drug
acts at molecular, cellular, organ and organismal level
to treat the disease/disorder;
Disadvantages or common adverse effects of the use of the drug;
How the drug has been developed from predecessor versions to improve its usefulness
Could you help me
solve all of them? The reason is that they are connected together.
thank you so much!