Our expert says:
Curious. Before a generic version of a drug can be registered for sale, it must submit proof ( admittedly to the enormously inefficient Medicines Control Council ) to prove that it is biologically equivalent to the original drug, that is, that it should behave exactly the same in the body when taken.
I think a full checkup would be wise, as what you're describing isn't a well-recognized or common side-effects of any of these meds.
Its a problem when a pharmacy is out of stock of a particular preparation - but I'd prefer them to give you maybe a week's supply of a valid substitute while they get the prescriebd drug, and then give you the rest of the prescription in the correct version.
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