In general it depends on your horse. If you have the feeling that you might also have a zinc deficiency, we would normally recommend a metabolism booster, as this also has zinc added separately as a trace element. However, if you have a horse that is extremely picky/delicate, we would recommend the Hemp PLUS mixture. This has really been eaten really well by all horses so far. If you have a PSSM1 horse at home, it may be advisable to feed it the Hemp PLUS mixture. In general, it is recommended not to feed PSSM1 horses too much chromium-containing nettle. On the other hand, there are already a lot of positive comments from PSSM-1 horse owners who have fed the booster despite the (rather small) amount of nettle... If in doubt, please always clarify any supplementary feeding for horses with metabolic problems with your treating veterinarian. If you have just completed a treatment with the booster or with hemp, you are welcome to add a magnesium treatment. Magnesium as “the king of minerals” has many key functions and horses that have to perform a bit or sweat a lot in summer often have an increased need for magnesium. Changing the different products from the Horse Vitality Company certainly makes sense in terms of “varied” horse feeding.