A postoperative patient simply needs a balanced diet that may or may not include nutrient supplementation with vitamins as these are co-factors in your healing. I think you can put your “collagen supplement budget” into a good quality skin care. Collagen supplementation does not improve the collagen in your wound per se. The collagen from your diet does not go into your wound in any way. It is first metabolized and broken down like any protein source and then your body will turn it into the proteins that are necessary in your post recovery period. The long story short is that I would not recommend using them as they have no impact on your healing. I am sure your plastic surgeon, if he is board certified, would concur.