Side Effects Of Naltrexone Implant

Naltrexone implant prevents intense cravings that are typically encountered when pursuing sobriety. Without these severe urges and cravings, individuals with a substance use disorder have the strength to overcome drug addiction. If you’re considering naltrexone, we can help. At Beat Addiction Recovery, we’ll provide all the information you require on naltrexone implants and how to begin the process.

Side-Effects of Naltrexone Implant

If you’re wondering how to beat your addiction, naltrexone has immense benefits in your recovery journey. Still, the medication has some common side effects such as:

  • Constipation
  • Insomnia
  • Shivering
  • Anxiety
  • Stomach pain or abdominal discomfort
  • Joint or muscle pain
  • Dizziness and headache

Other side effects of naltrexone implant are:

Loss of Appetite

Naltrexone can decrease your appetite, not to mention cause weight loss.


Tiredness and drowsiness are normally symptoms of medications that impact the brain's opioid receptors, such as naltrexone.


Nausea is usually mild, but severe cases could be an indication that something is wrong. Seek medical attention promptly if you:

  • Are unable to drink for at least 12 hours or eat for 24 hours because of nausea.
  • Have persistent nausea for over 48 hours.
  • Have nausea accompanied by confusion, severe headache, excessive diarrhea, fast heartbeat, blurry vision, pain in the arms or jaw, chest pain, or projectile vomiting.

The mild side effects of naltrexone implant last for a couple of weeks of stopping the medication or treatment. At the same time, many side effects improve with time as your body adjusts to the medication. It's crucial to call your provider right away if the symptoms worsen over time or you experience strong side effects.

Severe symptoms of naltrexone implant include:

Liver Injury

Naltrexone can lead to abrupt liver damage. If you notice dark urine, excessive fatigue, intense pain on the right side of your stomach, suddenly losing a lot of weight, clay-colored stool, or sudden vomiting and nausea, contact your provider without delay.

Depression or Suicidal Thoughts

While under naltrexone, some people become depressed or even suicidal. Should you notice any unexplained changes in your mood, thoughts, and behavior, let your doctor know immediately.

Side-Effects of Using Naltrexone Before Finishing Detox

To overcome substance abuse with the help of naltrexone, it’s important to note that you can’t begin treatment until you complete detoxification. That’s when all the opioids are removed from your body. Usually, this takes 7 to 10 days. During this period, you may experience discomfort and unpleasant side effects of withdrawal.

In the event that you start using naltrexone before your body is completely detoxified, you may experience persistent and acute withdrawal symptoms. This happens since naltrexone works by replacing the opioids attached to your brain receptors, causing you to encounter extreme withdrawal.

If you have considerable physiological dependence on drugs, using naltrexone without full detoxification can lead to:

  • High blood pressure
  • Muscle spasms
  • Fast pulse
  • Pain
  • Anxiety
  • Cramps
  • Difficulty breathing
  • Heightened reflexes

Get Help to Overcome Addiction

Support and ongoing, customized treatment are critical to breaking free from drug addiction. By offering our medication-assisted program at Beat Addiction Recovery, we're able to provide people with a substance use disorder the best possible chance at beating addiction. Contact us for help on our toll-free line: 1-888-993-1099.