Rules for Travelling to the USA with Prescription Medicines

Petr Novák

Are you traveling to the USA and need to bring medications with you, whether prescription or over-the-counter? The import of medications into the United States is only allowed if it complies with the rules set by the Food and Drug Administration (FDA), the U.S. Customs and Border Protection (CBP), and the Drug Enforcement Administration (DEA). Strict regulations apply, especially to medications containing controlled substances or substances with a potential for abuse, requiring declaration and appropriate documentation.

Rules for Travelling to the USA with Prescription Medicines | © Unsplash.com

  1. Table of Contents
    1. How to Travel to the USA with Medications
    2. Permitted and Prohibited Medications in the USA
    3. Confirmation for Medication Use During Travel to the USA

    How to Travel to the USA with Medications

    When traveling with medications to the United States, follow these rules established by the U.S. Customs and Border Protection.

    💊 Medications Should Be in Original Packaging

    All medications must be kept in their original pharmacy packaging with accompanying package inserts or instructions from your physician. If the original packaging is unavailable, you must provide a copy of the prescription or a medical certificate explaining your condition and why the medication is necessary.

    💊 Bring Only the Amount Needed for Your Stay

    Travel with only the amount of medication required for your stay in the United States. The general recommendation is not to carry more than a 90-day supply.

    If your stay exceeds 90 days, you can have additional medication shipped to you. In such cases, you must prove the medications are for personal use during your stay. Proof can include a copy of your visa, passport, a doctor’s statement, and an English copy of the prescription.

    More information can be found on the FDA website.

  2. Permitted and Prohibited Medications in the USA

    It is prohibited to bring medications containing narcotics or substances with a high potential for abuse into the United States, regardless of whether they are legal or prescribed in other countries.

    ⚠️ List of Medications Prohibited in the USA

    If a medication is not approved by the FDA, it cannot be legally brought into the country. Such medications will be confiscated during customs inspections. A complete list of controlled drugs and substances can be found on the U.S. Department of Justice website.

    In the USA, some drugs may be marketed under different trade names. Verify the active ingredients of your medication. For assistance, consult a travel medicine center.

    ⚠️ Categories of Controlled Substances in the USA

    Controlled substances in the United States are divided into Schedules I-V, based on their potential for abuse. The following rules apply to the import of controlled substances:

    • Schedule I: Import is prohibited for personal use as these substances are not recognized for medical use in the USA.
    • Schedule II: Import is allowed under strict conditions. You must have a doctor’s certificate, the medication in its original packaging with a package insert, and a supply not exceeding 90 days. All medications must be declared at customs.
    • Schedule III: The same conditions as Schedule II apply.
    • Schedule IV: The same conditions as Schedule II apply.
    • Schedule V: The same conditions as Schedule II apply, but a doctor’s prescription is sufficient instead of a formal certificate.

    Commonly regulated medications in the USA include Rohypnol, GHB, and substances like Phentermine.

    ⚠️ Traveling with Medications Containing Controlled Substances

    If you need to bring medications containing potentially addictive substances (e.g., sleeping pills, antidepressants, stimulants, or sedatives) into the USA, follow official instructions.

    Declare all such medications to a customs officer and ensure they are stored in their original pharmacy packaging. Travel only with an amount that corresponds to your medical needs (e.g., chronic pain) and personal consumption. Provide a written statement in English from your physician confirming the medications are prescribed under medical supervision and are necessary for your travel.

    Before departure, ensure you arrange travel insurance for the USA with sufficient coverage. For medical care, a minimum coverage limit of $100,000 is recommended.

  3. Confirmation for Medication Use During Travel to the USA

    Request a certificate confirming the use of your prescribed medications from your attending or general physician. Below is an example of the document format.

    📝 Sample Certificate for Importing Medications to the USA for Personal Use

    May 28, 2025

    Name of the patient: [Full name of the patient]
    Date of birth: [Patient’s date of birth]
    Sex: [Gender]

    To Whom It May Concern,

    My patient [Full name of the patient] has [name of the medical condition] and requires the following medications and devices to treat [his/her] condition:

    • [List of medications, including specific details, e.g., Dasselta 5mg tablets]
    • [List of medical devices, e.g., syringes]

    The above medications and supplies are for the patient’s personal use and must stay with the patient at all times. If you have any questions regarding the treatment of this patient, please contact me at [physician’s phone number].

    Sincerely,
    [Physician’s name and stamp]
    [Name and address of the medical office]

Discussion (16)

I am traveling to America for 3weeks and I need to take co codamol for my. Knee pain prescribed by doctor due to arthritis. Will this be ok if I take my prescription

Odpovědět

@Robert Lane: Hi Robert,

medications containing codeine are controlled substances in the US. I recommend that you consult your physician about your situation so that you can avoid potential problems.

Have a safe trip to the USA. :-)

Odpovědět
L

My son has severe ADHD and Autism. He needs Vyvanse and Intiniv to help him function. I am headed to the U.S via the border with my family for a 2 week stay with friends in Seattle. What do I need for these medications? I assume they are controlled substances just want to ensure we got all we need before we leave in March.

Odpovědět

@Lisa Hannigan: Hi Lisa,

When traveling to the U.S. with prescription medications, especially controlled substances like Vyvanse, it is essential to be well-prepared with the proper documentation. Ensure that all medications are in their original packaging, clearly labeled with your son’s name, the prescribing physician’s details, and dosage information. It is highly recommended to carry a copy of the prescription along with a letter from the prescribing doctor that outlines the diagnosis, the necessity of the medications, and the treatment plan.

For Vyvanse, which is classified as a Schedule II controlled substance in the U.S., the additional documentation will help demonstrate that the medication is for personal use. :-)

Odpovědět
B

I have a prescription from Switzerland for the antibiotic clindamycin, for an abscess, which was filled after my departure for the US. Can my husband mail it to me from Switzerland to the US?

Odpovědět

@Beverly Cordel: Hi Beverly,

mailing prescription medications from abroad can be complicated due to strict U.S. import rules. Even if clindamycin is FDA-approved, Customs may flag or return the package. The safest, fastest solution is to see a U.S.-licensed doctor and fill the prescription at a local pharmacy, ensuring compliance with U.S. regulations and avoiding delivery issues. :-)

Odpovědět

Is it okay to have the medicine in my suitcase, as long as I declare it at customs? I have to take medicine with me for a longer stay and would rather not carry all the packaging in my hand bag.

Odpovědět

Hi Annika, yes, it is generally okay to carry your medicine in your checked suitcase when traveling to the United States, as long as the medication is for personal use and properly declared at customs. :-)

Odpovědět

Hopefully I am not repeating someone else’s question. I will be travelling to Chicago next month. One of my regular medications is Pregabalin. I have requested a letter from my GP to say which medications I will be travelling with. Will this be sufficient?

Odpovědět

@Lisa Nesbitt: Hi Lisa,

Yes, a letter from your GP listing your medications, including Pregabalin, is a very good step and often sufficient for personal use when traveling to the U.S. However, to avoid any issues at customs, make sure the letter is in English, includes your full name, dosage, reason for prescription, and is signed and dated by your doctor.

Bring medications in their original packaging with prescription labels clearly showing your name. While Pregabalin is not a controlled substance in the U.S., it is in some countries, so U.S. Customs may still ask questions. Carry the letter in your hand luggage and declare the medication if asked.

Only bring a quantity appropriate for the duration of your stay. :-)

Odpovědět

I am an American citizen returning to the USA. I have been prescribed an Osteoporosis medicine by my Belgian Rhematologist. It is in the form of syringes and 2 syringes must be administered one time per month for 12 months.
I will have 11 boxes each with 2 syringes as I will have taken the first month dose before departing.

May I enter the USA with this medication?

Odpovědět

I would prefer to remove the packaging for ease of transport.

Odpovědět

May I remove the packaging?

Odpovědět

@Alice: Hello Alice,

probably not in the full quantity – and do not remove the packaging. As a returning U.S. traveler you are still subject to FDA and CBP rules.

FDA and CBP typically use enforcement discretion for personal-use quantities, with the rule of thumb being no more than a 90-day supply, in original packaging, and with an English prescription or doctor’s letter. Eleven monthly boxes exceeds that threshold and may be detained or refused on entry.

Pack the syringes and medication in your carry-on, declare them to CBP on arrival, and tell TSA at security.

Unused syringes are permitted when accompanied by injectable medication, but they must be declared for inspection. Do not discard the outer box or labels. Removing the packaging would both complicate admissibility (and violate labeled storage instructions).

Odpovědět

Affedersiniz, konuyu daha iyi anlamak için bir kaynaktaki kurallara dayanarak şu soruyu yöneltiyorum: ABD’ye ilaçla seyahat ederken yaşamı için kritik olan insülin gibi ilaçlar için taşıma kabin içi mi yoksa kontrol edilmiş bagaj mı tercih edilmelidir ve bununla ilgili FDA/CBP/DEA yönergelerinde hangi özel şartlar (orijinal ambalaj, reçete/doktor mektubu, saklama sıcaklığı vb.) uygulanır? Bu konudaki ayrıntıları örneklerle açıklayan kaynağı şu linkte bulabilirsiniz: https://wikiusa.org/en/traveling-to-usa-with-medications

Odpovědět

@Latoya: Hi Latoya,

carry all life-critical medicines such as insulin in your cabin bag, not in checked baggage, because the aircraft hold can freeze or overheat and bags can be lost. U.S. authorities explicitly allow medically necessary liquids and supplies in “reasonable quantities”.

So tell the TSA officer at screening, separate them from other items, and expect extra screening if something alarms – ice or gel packs used to keep medicine cool are allowed even if partially melted; unused syringes are permitted when accompanied by injectable medication, and used ones should travel in a sharps container.

If you wear an insulin pump or CGM, inform the officer and request alternative screening if you prefer not to have the device X-rayed, you are not required to remove a device attached to your body – for documentation, keep medicines in original pharmacy packaging with your name and the prescription label, carry a prescription copy or a doctor’s letter in English, and bring only personal-use quantities with a common rule of thumb being up to a 90-day supply.

Insulin is not a controlled substance but if you travel with controlled medicines you should carry clear documentation and confirm they are legal to bring; for storage, keep insulin cool but not frozen, avoid direct ice or heat, and use insulated pouches or gel packs so the medicine stays within the temperature range on its label.

Odpovědět

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