From what I understand you shouldn’t take a Zinc supplement for more than a week or two. Even you will start getting nauseous after popping a pill. That usually means you’ve had to much and need to take a break for a few weeks. Is there a certain Zinc supplement that doesn’t do this?
I totally favor cycling most supplements - particularly ones that affect hormones - but I don’t subscribe to the one-size-fits-all suggestion of limiting zinc to 1 or 2 weeks.
It is true that in excess amounts zinc will be toxic, so if you’ve ever experienced nausea that you think might be attributable to zinc, it would be prudent to (a) avoid excessive doses when you do take it, (b) check the ingredient list on all multi-ingredient supps you take to make sure you are not getting “extra” zinc tucked in somewhere unexpected, and (c) limit the duration of your cycle.
That said, I think zinc deficiencies are fairly common among males who resistance train - and other athletes. Some time ago, I regularly used to take ZMA for periods well in excess of 2 weeks, and I never had an issue.
I remember reading that taste can be a crude indicator of zinc deficiency. Supposedly things containing zinc taste (e.g., Cold-eze) taste strong (and nastier) to folks with sufficient zinc in their systems. I’m not sure the basis of this observation, but I do know my wife would rather succumb to a cold than endure the taste of Cold-eze, whereas I could pop them like candy.
Anyway, I don’t want to recommend reckless conduct, but I think a 1-2 week limit on zinc is unduly restrictive for many.