Grape seed oil may provide some health benefit. A 1993 study supports the claim that grape seed oil increases high-density lipoprotein (HDL-C or "good cholesterol") levels and reduces LDL levels.
Although grape seeds contain antioxidants and other biologically active compounds,the cold-pressed grape seed oil contains negligible amounts due to their insolubility in instance, sufficiently high amounts of resveratrol occur in grape seed for it to be extracted commercially, yet it is almost entirely absent in the grape seed oil.
I've been on these products for 3 months, I started doing 100 mcg each 3 times a day so: on workout days in the morning 20/30 minutes before breakfast, 20/30 minutes before lunch, and immediately after the workout . on days I did not train the pin I did right after training I did it 20/30 minutes before dinner. after a few days I noticed more fullness in the muscles and more vascularization, my hunger was crazy, after about a week I put on 2 kg, I also saw some water retention, so I decided to lower the dosage to 80 mcg of each, hunger has stabilized and water retention is gone.