You should have no problem. Keep them in the original containers. Shouldn't be a problem in carry on or checked in luggage. If I were you, though, I'd take an unopened and sealed bottle of creatine.
People Also Ask
The TSA website clearly states that yes, packing vitamins is are allowed in both your carry-on bag and checked baggage. [7] As long as they are in solid form, such as capsules, tablets, or gummies, you are permitted to pack as many supplements as you like, and they don't have to be labeled.
Checked Bags: YesPowder-like substances greater than 12 oz. / 350 mL must be placed in a separate bin for X-ray screening. They may require additional screening and containers may need to be opened. For your convenience, we encourage you to place non-essential powders greater than 12 oz.
Powder-like substances greater than 12 oz. / 350 mL must be placed in a separate bin for X-ray screening. They may require additional screening and containers may need to be opened. For your convenience, we encourage you to place non-essential powders greater than 12 oz. in checked bags.
If the original container is less than 12 ounces (350ml) of powder, you can pack your protein in your carry-on without worry. However, TSA will require any powder or supplement containers greater than 12 ounces to be placed in a separate bin for screening at airport security.