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Supplements for Opioid Withdrawal: What the Evidence Shows

Medically reviewed by Paul Ballas, D.O.
Posted on October 29, 2026

Key Takeaways

  • Opioid withdrawal can bring on uncomfortable symptoms like nausea, sweating, and diarrhea, and while some people wonder if vitamins or supplements might help, research on this topic is limited.
  • The FDA does not approve dietary supplements to treat opioid withdrawal or opioid use disorder, and products like kratom and tianeptine can be especially dangerous and cause serious harm. Some supplements like vitamin C and magnesium have shown promise in early studies, but the evidence is not strong enough to rely on them, and they can interact with medications or cause side effects at high doses.
  • If you or someone you know is thinking about stopping opioids, reaching out to a healthcare professional before attempting withdrawal on your own is an important first step, and you can also call the SAMHSA National Helpline at 1-800-662-4357 for free and confidential support.
  • View all takeaways

If you’re going through opioid withdrawal, symptoms like nausea, sweating, and diarrhea can make you feel really sick. You may wonder if vitamins and supplements would help you feel better faster.

Research on supplements is limited. There’s no strong evidence that supplements can replace medications approved for opioid use disorder (OUD).

That said, some supplements may be helpful in certain situations. Here’s a rundown of the research and guidelines.

🗳️ Have you found benefits to using supplements for opioid withdrawal?
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What To Know About Supplements for Opioid Withdrawal

Dietary supplements aren’t regulated in the same way as medication. It’s mostly up to supplement manufacturers to ensure there aren’t any misleading claims or dangerous ingredients.

If you see a supplement that’s advertised as a natural way to ease withdrawals, don’t believe the hype. The U.S. Food and Drug Administration (FDA) doesn’t approve dietary supplements to treat, prevent, or cure opioid withdrawal, OUD, or any other medical condition.

Also, keep in mind that even products labeled as natural or healthy aren’t always safe. Supplements might interact with your medications or be toxic at high doses.

Ingredient Concerns

In some cases, supplements don’t even list the right ingredients on the label. Third-party organizations test certain brands to check if the product actually contains what it says. These include consumerlab.com, NSF International, and U.S. Pharmacopeia.

The FDA can also check on supplement companies, especially if there’s a complaint. But supplements don’t need approval before they’re sold. That means quality issues may go unreported until after the product’s been available for a while.

Before trying a supplement, talk with a healthcare professional. This is especially important if you take prescriptions, have health conditions, or are pregnant. The healthcare professional can help you decide if the supplement is safe and whether it’s worth your money.

What Does the Evidence Say About Supplements?

There’s no proven supplement for opioid withdrawal. But researchers have been looking into it. Here are the vitamins, minerals, and herbs mentioned in OUD studies.

Vitamin C

Vitamin C can help shorten colds and support essential body functions. Vitamin C also affects feel-good chemicals in the brain. These include dopamine and serotonin.

People with OUD are more likely to be deficient in vitamin C. In addition, researchers think having low vitamin C levels before starting opioids may increase the risk of developing OUD.

What the Research Says

In 1969, researcher Alexander G. Schauss gave people with OUD vitamin C as part of a supervised detox.

Participants were detoxing at a heroin treatment facility. They were told to drink fruit juice with a form of vitamin C every few hours until their symptoms improved. According to his report, the vitamin C stopped withdrawal symptoms for everyone who tried it.

Other researchers repeated similar studies with promising results. One added the B vitamin niacin to their protocol. Another combined vitamin C with methadone (a prescription drug for OUD).

Despite their effectiveness, these protocols weren’t fully endorsed by medical facilities at the time. Today, some researchers still believe vitamin C may help with OUD in the following ways:

  • Reducing pain and promoting healing, lowering the need for opioids in the first place
  • Improving comfort when tapering down prescribed opioids
  • Helping people who quit opioids abruptly (“cold turkey”) to be more successful

Should You Take Vitamin C?

Vitamin C has likely benefits and few safety risks. As a result, researchers have suggested including it to support other OUD treatments.

Ask your healthcare provider before adding vitamin C to your treatment plan. You may need to avoid vitamin C supplements if you have kidney problems or high iron levels. That’s because vitamin C increases iron absorption.

In high doses, some forms of vitamin C can cause diarrhea. If you take more than your body can handle at once, you could get stomach cramps and nausea. Instead, smaller doses spread throughout the day may be easier to absorb and tolerate.

Magnesium

Magnesium as a supplement is commonly used for heartburn and constipation. Magnesium may also help with migraine headaches.

What the Research Says

Research suggests magnesium could help with opioid withdrawals due to its effect on the glutamate system. Basically, opioids block a receptor in the brain linked with pain. Magnesium has similar effects and may help blunt the increase in pain when stopping opioids.

One clinical trial included 40 people in the emergency room for opioid withdrawal syndrome. Half were given prescribed medications for their symptoms. The other half were given the same prescribed meds plus magnesium.

Both groups saw their symptoms improve after getting treatment. But the magnesium group experienced stronger symptom relief.

Should You Take Magnesium?

The study on magnesium for opioid withdrawal is promising, but small. It’s hard to know if these benefits would happen for everyone.

High doses of magnesium from supplements can lead to stomach problems, low blood pressure, heart attacks, and trouble breathing. Most people get enough magnesium from food. So ask your doctor if a supplement is right for you.

Herbal Supplements

Scientists have studied herbs for the treatment of OUD. Here’s what they’ve found.

Passionflower

A small human study added the herb passionflower to clonidine, a prescription medication for opioid withdrawal. The results suggested that passionflower improved mental withdrawal symptoms from opioids compared to clonidine alone.

Although the study was well-designed, it’s more than 20 years old, and no larger or more recent studies have looked at passionflower for OUD.

Other Herbs

Several herbs have been shown to reduce opioid withdrawal symptoms. Research has included the following herbs:

  • Saffron
  • Nigella sativa
  • Zataria multiflora
  • Rosmarinus officinalis
  • Sophora alopecuroides

The effects were similar to those seen with approved treatments for opioid withdrawal symptoms. But all of the studies have a high risk of bias. This means their results can’t be fully trusted.

Should You Take Herbal Supplements?

Herbal supplements shouldn’t replace approved treatments for opioid withdrawal symptoms. These products can come with risks. Plus, it’s hard to predict how your body will react to them.

Like other dietary supplements, herbal products have a risk of contamination. They may contain heavy metals or toxins.

In addition, there’s no established dose for opioid withdrawal symptoms or other uses. Without more information and regulation, supplements aren’t a reliable way to manage opioid withdrawal.

Supplements and Other Products To Avoid

Some products marketed as natural alternatives to opioids have drug-like effects. They carry different risks from ordinary multivitamins or supplements.

Kratom and 7-OH Products

Kratom is a plant with leaves that contain compounds that act on opioid receptors in the brain. Some people use kratom to manage pain, improve energy, or ease opioid withdrawal. But there isn’t evidence that kratom is safe or effective for withdrawal.

Kratom can cause serious liver problems and seizures. Because of these safety concerns, the FDA has outlawed kratom in dietary supplements. Also, the FDA considers kratom-containing dietary supplements adulterated and not lawfully marketed in the U.S.

Products advertising 7-hydroxymitragynine (7-OH) are especially dangerous. Kratom naturally contains very small amounts of 7-OH. But concentrated 7-OH products have even more powerful opioid-like effects and associated risks.

Tianeptine and Other Unapproved Supplements

Tianeptine is a drug used in certain countries to treat mental health conditions. It’s not approved for any medical uses in the U.S. Despite this, some companies sell tianeptine products as supplements or market them as treatments for opioid withdrawal, anxiety, or OUD.

Tianeptine can produce opioid-like effects. It can lead to dependence, overuse, and withdrawal.

The FDA warns against using any products with tianeptine. Taking these products for OUD instead of seeking medical care can delay effective treatment and cause harm.

Evidence-Based Treatment for Opioid Withdrawal

Withdrawal can be difficult. Medical treatment can help make the process safer and more manageable. It can also reduce the risk of returning to opioid use.

Treatment depends on several factors. Your healthcare team will consider the type of opioid used, how long it was used, the severity of your withdrawal symptoms, and your health history.

Medically Supervised Withdrawal

Medically supervised withdrawal involves managing withdrawal symptoms with help from healthcare professionals. Treatment may include prescription medications, fluids, and other supportive care.

Doctors may recommend medications such as clonidine or lofexidine to ease some physical symptoms of withdrawal. Other medications may help manage nausea, diarrhea, muscle aches, or sleep problems.

Medical support is particularly important if you’re pregnant or have other medical conditions. Opioid withdrawal isn’t usually life-threatening. But some people develop dangerous complications, like dehydration.

Medications for Opioid Use Disorder

Medications for opioid use disorder (MOUD) are among the most effective treatments available. Here are the three FDA-approved medications:

  • Buprenorphine — Reduces cravings and withdrawal symptoms. It acts on opioid receptors but has a different effect from full opioid drugs.
  • Methadone — Helps control withdrawal symptoms and cravings while reducing the effects of other opioids.
  • Naltrexone — Blocks opioid receptors. You should wait until you’ve completed opioid withdrawal before starting it.

These medications can be part of a longer-term treatment plan. When used as prescribed, MOUDs can help you regain control of your life and well-being. Treatment with these medications may continue for years or indefinitely when beneficial, and tapering should be a shared decision with your prescribing clinician, not a response to family or other social pressures.

Counseling and Recovery Support

There’s more to recovery than medication. Counseling, behavioral therapies, peer support, and other services can help address the challenges of living with OUD.

If you’re considering stopping opioids, don’t turn to supplements. Talk with a healthcare professional about a treatment plan before attempting withdrawal on your own.

You can also contact the Substance Abuse and Mental Health Services Administration (SAMHSA) National Helpline at 1-800-662-HELP (4357) for free, confidential treatment information and referrals.

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