No, it’s not. But when traveling with any prescription med it must be in it’s original bottle with the pharmacy label. It must have your name on it and not have any other tablets in with the prescription (i.e. Tylenol in with the prescription pain killer)

Generally, they are more worried about controlled substances (vicodin, sleeping pills) at customs, but can get cranky about any perception in your possession that isn’t in your name.

you should be able to as it’s not a illigal drug, and it’s for personel use, depends how much you take i guess.

generaly (for example in USA or Canada) it’s ok when the quantity and purpose are clearly for personal use, and the product does not present an unreasonable risk to the user. but Customs Service may request a sample.

note: but there are contries where importing almost any drug is illegal.