No need for a pharmacy. What you have will be fine for container-grown tomatoes.

Aside from other view and issues(MG, organic), I think that TIME RELEASE fertilizer fits best for pot/container growing, because it will leach out at much slower rate.

S...the time-release aspect appeals to me, as well. Less chance of burn...and does not dissipate quickly and fall through drain holes.

I think tomato is no different from any other fruits bearing garden veggies. It requires all the basic ingredient (all purpose) early on and later less "N" and more "P" and some "K" when starts setting fruits.

I have seen pictures of towering tomato plants. And I think I know how that happens.

Ideally you would want to vary the fertilizer amount and makeup as your growing and fruiting season progresses since plant nutrient needs change and you can find specificic recommendations for tomatoes from various university hort websites. But I also like the idea of a slow release fertilizer for container gardens since research with most flowering plants shows an advantage of using them.

Actually, my 3 containers (Cherokee Purple, Brandywine, and Early Girl) are all healthy and giving good fruit. I am a bit surprised that the height of these only remains around 3-3 1/2 feet...with slow growth now (not complaining). My very un-scientific fertigation program (frequent apps of tomato tone, MG, and Foliage Pro) seems to be acceptable. I bet I could improve...just not sure how. I think the fast-draining mix is key...