You should therefore ensure you use a reputable supplier.
A generic drug from reputable suppliers costs only $10 a month in India.
We bought from a local reputable supplier and they have been very helpful on the few occasions when needed to phone them up for advice.
That's why I asked for a reputable pharmacy assuming they buy from reputable suppliers.
You should always buy potatoes from a reputable supplier.
Ensure the plants have been grown from certified stock which is free from virus by buying from a reputable supplier.
Always buy certified disease-free plants from a reputable supplier.
Make sure it's from a reputable supplier and check that customers aren't listed with the telephone preference service if you're planning to call them.
You should always use a reputable supplier, establish its source and analyse whether it is appropriate for your intended purpose.
However, having had extensive experience with both, I suggest you simply purchase distilled water from a reputable supplier.