It depends on the country and sometimes things go through customs fine, and sometimes they don't. Its not really cut and dry on what will and won't work. Its best to order small per order to reduce the chance of seizure, and a bigger loss
I'm in Canada and am having trouble. Bought SARMS June 5th, put in customs June 6th, sent to Health Canada June 13th, and FINALLY tomorrow the representative will evaluate the package, after all this time it still very well could get seized. I'm praying that tomorrow it goes through fine, I just have to pray to God, this has been one hell of a stress, I was supposed to start my sarms bridge last week