Naltrexone Shot Naltrexone is a drug that was originally used to treat opioid addiction. It reduces the effects of opioids in the brain, and can therefore help people who are addicted to opioids stay off them. But naltrexone has also been approved by the U.S. Food and Drug Administration as a treatment for alcohol dependence.
Naltrexone has been shown to be effective at reducing heavy drinking in patients with alcohol use disorders (AUDs).
The drug works by blocking the effects of alcohol on your brain’s opioid receptors, which makes it harder for you to feel pleasure from drinking. This reduces your urge to drink and gives you more time between drinks so that you don’t consume as much alcohol overall.
Naltrexone comes in two forms: a pill or an injectable shot called Vivitrol (also known as naltrexone hydrochloride). The shot lasts longer than the pill form because it’s injected into muscle tissue instead of being digested like pills are. It takes about 10 minutes to administer a Vivitrol shot once it’s prescribed by your doctor; however, some patients may experience side effects such as pain at the injection site or fatigue after receiving this medication
What does naltrexone shot do?
Naltrexone is a drug that works to block the effects of opioids in the body. It’s used to help people stop taking opioid drugs, such as heroin or prescription pain relievers like oxycodone (OxyContin®), hydrocodone (Vicodin®), codeine, morphine and fentanyl (Duragesic®).
Naltrexone may be prescribed along with counseling and other behavioral therapies to help you stop using these drugs. You’ll usually get naltrexone as an injection or implant under your skin. The medicine can also be taken as a pill, but this form isn’t as effective for treating opioid addiction — it’s more likely to cause withdrawal symptoms than other forms.
The Food and Drug Administration (FDA) approved several different versions of naltrexone for the treatment of opioid dependence in 1994. The FDA has approved a new form of extended-release naltrexone called Vivitrol® for treating alcohol dependence and prevention of relapse into opioid use disorder treatment, but not for treating heroin use disorder or other types of opioid use disorders. Vivitrol® is available in two dosage strengths: 380 mg once monthly injection or 380 mg once quarterly injection.
Is there a naltrexone injection?
Yes, there is a naltrexone injection. It is called Vivitrol. Naltrexone is an opiate blocker that helps reduce cravings for opioids and alcohol. When taken on a daily basis, it blocks the effects of heroin or other opiates. When injected in a clinic, it helps reduce cravings for up to 30 days at a time.
How does Vivitrol work?
Vivitrol works by blocking the effects of opiates and alcohol on your brain’s pleasure receptors. By blocking these receptors, you won’t get the same feeling of pleasure when using drugs or drinking alcohol as you normally would. This can help reduce cravings for both drugs and alcohol because they no longer provide any positive feelings (euphoria).
Is Vivitrol safe?
Vivitrol has been approved by the Food and Drug Administration (FDA) as an effective treatment option for alcohol dependence and opioid addiction. It’s safe when taken as recommended by your doctor and shouldn’t cause any side effects if you are taking it correctly. However, if you stop taking Vivitrol suddenly, you might experience withdrawal symptoms like nausea, sweating, trembling and insomnia
How does naltrexone make you feel?

You might feel a bit less depressed or anxious. But the drug can also make you feel worse.
Naltrexone is used to treat alcoholism and opioid addiction. It works by blocking receptors in your brain that are affected by these drugs. This means you’ll have less of an urge to drink alcohol or use opioids.
Naltrexone doesn’t get rid of your dependence on alcohol or opioids completely, though. You’ll still need to take other steps to create new habits — such as avoiding friends who drink — so that you don’t relapse into old behaviors.
Naltrexone is used in combination with counseling and support groups for people who want to stop drinking alcohol or using opioids like heroin or prescription painkillers.
It’s not known exactly how naltrexone works, but it has been shown to reduce cravings for alcohol and reduce the risk of relapse compared with placebo (a “sugar pill” that does nothing).
Does Vivitrol cause weight loss?
Vivitrol is a long-acting drug that can help you beat your addiction to alcohol, heroin or painkillers. But what about weight loss? Vivitrol is a synthetic version of naltrexone, which blocks the effects of opioids and alcohol on the brain. While it’s not likely to cause weight loss on its own, some people do lose weight when they go off Vivitrol.
Vivitrol is a prescription drug approved by the U.S. Food and Drug Administration (FDA) for treating alcoholism by reducing cravings for alcohol. It’s also used for treating opioid dependence such as heroin or morphine addiction, but it’s not as effective in this case because it doesn’t block all opioid receptors like it does with alcohol (1).
Vivitrol is an opioid antagonist that works by blocking the effects of opioids on brain receptors, which helps reduce cravings for them. It also reduces the pleasurable effects of drinking alcohol, which makes drinking less appealing (2).
Vivitrol side effects include headaches, nausea and vomiting, dizziness and insomnia (3). It can also cause liver damage when taken with other drugs known to damage this organ like acetaminophen
Does naltrexone give you energy?
Naltrexone is a drug used to treat alcoholism and opioid addiction. It blocks the effects of opioids in the brain, which helps prevent people from abusing them.
Naltrexone can also help people overcome alcohol addiction by reducing the pleasurable effects of drinking. But some people who take naltrexone experience side effects such as headaches, dizziness, and insomnia. These symptoms are usually mild and don’t last long.
Does Naltrexone Give You Energy?
Naltrexone doesn’t have any direct effects on your physical energy levels or ability to perform physical tasks. However, it does decrease some of alcohol’s sedative effects, so people who drink while taking naltrexone may feel less tired than usual and be able to stay awake longer than they would otherwise (1). This may translate into increased energy levels over time because you’re awake more often during the day.