What is the best marketing practice in the pharmaceutical field?

communication strategy

in the pharmaceutical field you usually deal with doctors, so the best Marketing Practice communication strategy is through BTL activities ( Below the Line) : refers to forms of non-media communication, even non-media advertising.
through : seminars, events, price promotion,Gift with purchases, also gifts certificates, coupons, free samples .
in some cases you can use ATL ( above the line ) activities if you are going to promote it to the mass.
it depend on what kind of products or services you offer.