No. 02A year of capsules
Is a year of Melonex longer than the research?
Yes. The trials behind the ingredients ran for weeks, and a 6-bottle pack runs for about a year.
The 8 citrulline trials in one review lasted 1-17 weeks (Barkhidarian 2019, citrulline and BP). The Office of Dietary Supplements notes that the effects of high arginine doses beyond three months are unknown, and that citrulline safety is not well studied (NIH ODS, arginine and citrulline).
Those are different amounts from a 500 mg blend, so we are not saying a year is unsafe. We are saying nobody has tested this exact capsule across twelve months, and a longer supply means a longer stretch with no study to lean on.
A sensible plan is to check in with your doctor or pharmacist before you start, and again at day 60. Keep taking any prescribed medicine as directed.