It is not wise to take the two together, The injections should be spaced out. take a shot of Gh in the AM and then wait atleast 2-3 hours before taking a shot of insulin because in those 2-3 hours your gh levels will spike. When taking them together its counterproductive because insulin decreases the amounts of Gh levels released in the body. The best time to take insulin is after your workout with an ultrafuel, 50 grams of whey protein, 5 grams of creatine and 10 grams of glutamine mixed as a shake.