NaltrexonePrices, Coupons & Savings

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*Based on the difference between the U&C price submitted and the price the patient paid, as of April 2023.

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  2. Naltrexone HCl
    Generic for ReVia
    30 tablets $16.2 USD
    Save $85.80
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Save up to 90% of your branded or generic medications using the Now Patient Rx Advantage Card

Do you need a prescription for naltrexone?

Yes, naltrexone is only available with a valid physician Rx.

How much is naltrexone without Insurance in the US?

Our website gives two competitive savings options to US customers who wish to purchase naltrexone, as either a brand or generic, if available. The first is access to medications through our mail-order online pharmacy. The second is by using the Now Patient Rx Advantage Card, which can be used in over 65,000 pharmacies nationwide, across America. If you are insured, then in most cases, the cash price will be significantly cheaper than the copay.

What will my out-of-pocket cost be for naltrexone in the US?

There are no out-of-pocket (OOP) costs because we are currently only offering a cash-based option to purchase medications.

Is Now Patient a naltrexone savings card?

Yes. Save up to 90% on your naltrexone with the FREE Now Patient Rx Advantage card*.
*Based on the difference between the U&C submitted by the pharmacy and the price the patients pay.

Can you handle Rx transfers for home delivery in the US?

Yes. If you use the mail-order online pharmacy option, then we can handle requests by you to have your prescription transferred to our pharmacy for home delivery. We can even help you manage your refills by giving you timely reminders, so you do not run out of your medication.

Is Now Patient a naltrexone coupon provider in the US?

No. Now Patient does not provide naltrexone coupons or FREE naltrexone samples.

Do you accept commercial, Medicare or Medicaid coverage for naltrexone in the US?

No. Currently, we only offer cash-based options for purchase, therefore we do not require your insurance benefit details. In the future, our plan is to be able to handle commercial insurance, Medicare and Medicaid including cases where you have multiple health plans that provide benefit coverage (e.g. Medicaid and Commercial). We also anticipate being able to handle more complex scenarios such as using primary insurance combined with a manufacturer copay assistance program.

Does Now Patient work with Medicare?

Our cash-based prices for medications are typically cheaper than Medicare copays. We do not bill Medicare Part D (standalone drug coverage) or Medicare Advantage (combined health and drug coverage). When you purchase your medication from Now Patient, you will be doing so out of your pocket. The spend will not count towards your plan deductibles or gaps.

Does Now Patient work with Commercial Insurance?

Our cash-based prices for medications are typically cheaper than commercial plan copays. We do not bill your commercial plan. When you purchase your medication from Now Patient, you will be doing so out of your pocket. The spend will not count towards your plan deductibles or gaps.

What should you do if you use too much naltrexone?


Call your doctor right away or seek immediate medical attention if your symptoms do not improve or they become worse after using naltrexone. You can also call 800-222-1222 to reach the American Association of Poison Control Centers or use its online resource if you think you’ve used too much naltrexone. But if you have severe symptoms, call 911 (or your local emergency number) immediately or go to the nearest emergency room.


If you think it is an emergency, call 999 or find your nearest A&E
If you need help now, but it’s not an emergency go to 111.nhs.uk or call 111. Alternatively you can speak to one of our pharmacists or use the Now Patient app to make an appointment with your GP.

What should I do if I miss my dose?

There are occasions when people forget to take their medication at correct prescribed times. This may not only have an effect on potentially making the medication less effective but it may also inadvertently lead to taking doses too close together, thereby increasing the risks of side effects.

Click here to find out what to do if you forgot to take your medication

US brand name of naltrexone and manufacturer

Naltrexone is approved by the Food and Drug Administration (FDA) in the US under the brand name Revia, which is manufactured by DuPont.

UK brand name of naltrexone and manufacturer

Naltrexone is available as a generic in the UK.

Is naltrexone available in the UK on the NHS?

Yes, naltrexone is available on the NHS in the UK.

Prescription requirement for naltrexone

Naltrexone is a prescription medication and requires a prescription from a healthcare provider.

Active ingredient of naltrexone and mechanism of action

Naltrexone is an opioid antagonist. Its active ingredient, naltrexone hydrochloride, works by blocking the effects of opioids in the brain. It binds to opioid receptors and prevents opioids from binding, thereby reducing the rewarding effects of opioids and helping to prevent relapse in individuals with opioid dependence.

Uses of naltrexone

Naltrexone is primarily used for the treatment of alcohol use disorder (AUD) and opioid use disorder (OUD). It is used as part of a comprehensive treatment plan that includes counseling and psychosocial support. Naltrexone helps to reduce the cravings of opioid addiction and discourage drug abuse by blocking the pleasurable effects of opioid drugs.

Naltrexone is also used in the treatment of alcohol dependence. It can help reduce the desire to drink alcohol and decrease the rewarding effects of alcohol consumption.

Forms of naltrexone

Naltrexone treatment is available in various forms, including oral tablets and extended-release injectable formulations. The specific form and strength will depend on the intended use and the prescribing healthcare provider’s recommendations.

Dosage of naltrexone

The dose of naltrexone will vary depending on the individual and the specific condition being treated. It is important to take naltrexone according to the medical advice provided by a healthcare professional. For opioid dependence, naltrexone is typically initiated after a period of opioid detoxification. The extended-release injectable form is administered once a month, while the oral tablets are usually taken once daily.

Precautions and warnings for naltrexone

  • It is important to inform your healthcare provider about any other medications you are taking, as certain medications may interact with naltrexone and affect its effectiveness or increase the risk of side effects
  • Naltrexone may cause liver damage in rare cases, so regular monitoring of liver function is typically recommended during treatment. Tell your healthcare provider if you have liver disease or acute hepatitis
  • Naltrexone should not be taken if you have a known allergy to naltrexone or any of its components
  • Naltrexone must not be used when taking opiates, including methadone. Doing so can cause sudden opioid withdrawal symptoms
  • Let your doctor know if you have an allergy to naltrexone, naloxone, other opioid medications
  • Naltrexone passes into breast milk. Speak to your doctor before breast-feeding

Side effects of naltrexone

Common side effects of naltrexone may include nausea, vomiting, diarrhea, headache, dizziness, tiredness, abdominal pain, constipation, loss of appetite, and joint or muscle pain. These side effects are usually mild and temporary. However, if you experience serious side effects such as dark urine, yellowing of the skin or eyes, or upper stomach pain contact your doctor right away.

Interactions with other drugs

Naltrexone may interact with certain medications, including opioid medications, and decrease their effectiveness. It is important to inform your caregiver about all the medications you are taking, including prescription drugs, over-the-counter medications, and herbal supplements to help avoid drug interactions.


  • Vivitrol (Naltrexone) Prescribing Information – Alkermes, Inc.
  • Naltrexone – NICE Clinical Knowledge Summaries.


Now Patient has taken all reasonable steps to ensure that all material is factually accurate, complete, and current. However, the knowledge and experience of a qualified healthcare professional should always be sought after instead of using the information in this page. Before taking any drug, you should always speak to your doctor or another qualified healthcare provider.

The information provided here about medications is subject to change and is not meant to include all uses, precautions, warnings, directions, drug interactions, allergic reactions, or negative effects. The absence of warnings or other information for a particular medication does not imply that the medication or medication combination is appropriate for all patients or for all possible purposes.

Stefano Mirabello Medical Reviewer
Pharmacist / B.Pharm
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