Vitamin D and where it comes from
Vitamin D is one of the most common nutrients in men's formulas, and it's worth understanding why it's on so many panels. Sunlight exposure is the main natural source, and many people in urban Indonesia spend most of the day indoors, so the nutrient sits on a great many labels for the same reason.
Supplement labels usually state IU or mcg per serving. The two units measure the same nutrient at different scales, so convert before comparing products. A bottle in IU and a bottle in mcg can look wildly different while describing the same amount.
Practical note: if you are keeping a personal list of what you take, record the unit alongside the number. "25" means nothing on its own six months later.