Given my def. Of founder, no is the answer. But there are possibly helpful supps for helping treat/avoid the initial laminitis that causes founder. Different people use the terms lami & founder to mean different things it seems. IMO, laminitis is the inflammation & subsequent weakening of the lamellar tissue, which is a generally dietary caused metabolic issue. Founder is the mechanical progression of laminitis, if left untreated. The laminae separate & a 'lamellar wedge' can grow between wall & internal structures. Depending a lot on the way the horse is trimmed, shod(or not) & managed, founder can cause 'dropped soles' - that is, the foot 'sinks'(founders) inside the capsule so the sole is thin & coffin bone close to the ground - & it often also includes 'rotation' of the bone inside the capsule, so that the coffin bone is pointing toe first into the ground.
Anyway... Agree thoroughly with luvs2 first & foremost, that lami is generally due to dietary probs, so ensure the horse is kept on a very low-carb diet. Ensuring well balanced nutrition through(grain free) dietary supps will also provide the building blocks for healthy feet.
The major causes are hind gut acidosis due to feeding grain & other sugary/starchy feed, and insulin resistance due to too much high energy(starchy, sugary) feed, which also includes rich or too much grass. This can be a 'one off' or occasional thing, but commonly, IR becomes a 'disease' causing horses to be far more sensitive to sugars. As with human diabetes, it is a condition that overweight & under exercised horses are more susceptible, but even if/when the horse is not overweight, exercised sufficiently, it cannot be treated - it is an incurable 'disease' that takes lifelong management once 'contracted'.
There are products such as Founderguard(antibiotic; http://www.apvma.gov.au/products/review ... in_faq.php
) and KER's EquiShure(slow release magnesium) that are helpful in preventing/lessening hind gut acidosis. These prods are apparently effective, but I would instead recommend changing the diet from 'junk food' to a healthy one rather than adding drugs.
Unfortunately with regard to IR, more exercise, less calories & balanced nutrition are the only 'supps' that are likely to be much help. There is no pill to prevent or lessen insulin related metabolic probs, you can be sure, because otherwise half the western world of humans would be taking it! HOWEVER extra magnesium & other nutrients *may* help a little and there is a product called TRIM; Kohnke's Own Horse Health Care
which has some of these relevant extra minerals.