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RESPIRATORY DEPRESSION and Methadone

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RESPIRATORY DEPRESSION Symptoms and Causes

Respiratory failure happens when not enough oxygen passes from your lungs into your blood. Your body's organs, such as your heart and brain, need oxygen-rich blood to work well. Respiratory failure also can happen if your lungs can't remove carbon dioxide (a waste gas) from your blood. Too much carbon dioxide in your blood can harm your body's organs.

Diseases and conditions that affect your breathing can cause respiratory failure. Examples include

  • Lung diseases such as COPD (chronic obstructive pulmonary disease), pneumonia, pulmonary embolism, and cystic fibrosis
  • Conditions that affect the nerves and muscles that control breathing, such as spinal cord injuries, muscular dystrophy and stroke
  • Damage to the tissues and ribs around the lungs. An injury to the chest can cause this damage.
  • Drug or alcohol overdose
  • Injuries from inhaling smoke or harmful fumes

Treatment for respiratory failure depends on whether the condition is acute (short-term) or chronic (ongoing) and how severe it is. It also depends on the underlying cause. You may receive oxygen therapy and other treatment to help you breathe.

NIH: National Heart, Lung, and Blood Institute

Check out the latest treatments for RESPIRATORY DEPRESSION

RESPIRATORY DEPRESSION treatment research studies

Methadone clinical trials, surveys and public health registries


Find Drug Side Effect reports



Methadone Side Effects

Toxicity To Various Agents (601)
Cardiac Arrest (334)
Respiratory Arrest (316)
Completed Suicide (256)
Overdose (197)
Death (147)
Electrocardiogram Qt Prolonged (142)
Torsade De Pointes (97)
Respiratory Depression (82)
Cardio-respiratory Arrest (73)
Somnolence (65)
Accidental Overdose (59)
Nausea (57)
Pulmonary Oedema (57)
Loss Of Consciousness (54)
Vomiting (51)
Confusional State (47)
Pneumonia (40)
Dyspnoea (39)
Syncope (39)
Mental Status Changes (38)
Pain (37)
Fall (37)
Sedation (36)
Bronchopneumonia (36)
Dizziness (35)
Hypotension (31)
Convulsion (31)
Hyperhidrosis (31)
Malaise (30)
Depressed Level Of Consciousness (30)
Coma (29)
Unresponsive To Stimuli (27)
Intentional Overdose (27)
Constipation (27)
Feeling Abnormal (26)
Hypokalaemia (26)
Pulmonary Congestion (26)
Renal Failure Acute (26)
Ventricular Tachycardia (25)
Headache (25)
Fatigue (25)
Brain Oedema (25)
Lethargy (24)
Rhabdomyolysis (24)
Respiratory Failure (24)
Incorrect Dose Administered (23)
Bradycardia (23)
Accidental Poisoning (23)
Miosis (22)

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Recent Reviews

Good afternoon doc,my name dimasautisme,i comefrom indonesia ? im methadoners with 120 mg,im drink ARV to?please private my status? i just want quesstion i want to detox,where i must go to hospital doc? please help me :-D :)

I have been on methadone for two years. Went fro 70 mgs a day to 20. I do for pain and I have been prescribed klonipin also recently for severe panic attacks and I read online that it's a deadly combo. I take my methadone at 9 am. And have panic

Ive been takeing 90mls of methadone for approxamitley 2 years on and off but properly this time for a total off 7 months i get servere sweating from taking my methadone and feel very hot like im burning up and dripping with sweat why is this happenin

Methodone Side Effects, I have had many trips to Emergency Unit at my Town, having tight painful heart problems. But when they do the Tests for Heart attacks, I jave always been told I have no problem my heart is fine. I have had ECG Tests, all fine.

Zosert was prescribed by my cardilogist, but luckily seeing the side effects in this net, I have not started taking the tabs. Further when I am not having depression, I don't understand, why I have been prescribed this dangerous medicine

Although I have had a lifetime problem with depression (no treatment) I have noticed that since I started taking Zolipdem the depression is much worse even though I am sleeping better.

hi im 14 weeks pregnant and have taken 5mg cipralex for five days now at night for depression and anxiety,i feel better though very sleepy even during the day but im concerned for my unborn baby

Side effects I have from Nadolol are confusion, dizziness, lightheaded, increased depression and anxiety, and mild nausea.

Have just taken my first does of Loxalate 20mg for severe depression

When I read your literature, does it mean that bif vI have major depression and am taking cardizem and have photophobia that vthere is a chance for CHF, and myocarditis and that the medication should be changed? Beta blockers are out of the question

i had pounding heart and severe depression and anxiety while takeing candersartan. im waiting to see a cardioligist to see if i have done any damage. feel so much better now i have stopped takeing them

Thankyou for witing out this article I have been on 120mgs of Zeldox since November 2010 at first it seemed to work and now it has me stuck in a depression state . I was prior to that on olanzapine which held me also in a depressed state I

<span style=' '>Lexapro is a permanent life long cure for any depression if you can survive the treatment.<span style='mso-spacerun: yes;'> I was prompted by a marriage counselor to go to my doctor and requ

<span style='font-family: Calibri; '>I am experiencing severe irritability and moderate depression since I started taking Fenofibrate 160 mg 3 weeks ago, which is not at all normal for me.

RESPIRATORY DEPRESSION Clinical Trials and Studies

Treatments might be new drugs or new combinations of drugs, new surgical procedures or devices, or new ways to use existing treatments. The goal of clinical trials is to determine if a new test or treatment works and is safe. Clinical trials can also look at other aspects of care, such as improving the quality of life for people with chronic illnesses. People participate in clinical trials for a variety of reasons. Healthy volunteers say they participate to help others and to contribute to moving science forward. Participants with an illness or disease also participate to help others, but also to possibly receive the newest treatment and to have the additional care and attention from the clinical trial staff.
Rank Status Study
1 Recruiting The Use of Methadone in Newborn Infants
Conditions: Premature Birth of Newborn;   Critically Ill
Intervention: Drug: Methadone
Outcome Measures: Methadone PK and EDDP;   DNA
2 Recruiting Methadone in Pediatric Anesthesiology II
Condition: Pain
Interventions: Drug: Group 1- 0.4mg/kg IV Methadone HCl;   Drug: Group 2 - 0.5mg/kg IV methadon HCI;   Other: Group 3 - control no Methadone
Outcome Measures: Morphine consumption;   Pain scores;   Methadone clearance
3 Recruiting CYP2B6 Polymorphisms in Methadone
Condition: Healthy Volunteers
Interventions: Drug: racemic Methadone HC1;   Drug: Oral deuterated racemic Methadone HCl,
Outcome Measures: The effects of Methadone on healthy volunteers;   Methadone and bupropion concentration;   Methadone and bupropion clearance from the body;   Oral Methadone and bupropion absorption;   Influence of CYP2B6*6 hetero or homozyge genotype on the above primary and secondary outcomes
4 Unknown  Compare Methadone Combined With N-Acetyl-Cysteine (NAC) and Methadone Alone for Opioids Astaining
Condition: Opioids Use
Interventions: Drug: Methadone; NAC;   Drug: Methadone
Outcome Measure:
5 Recruiting Treatment of Pain in Head-and-Neck Cancer Patients: is Methadone More Effective?
Conditions: Pain;   Cancer of Head and Neck
Interventions: Drug: fentanyl;   Drug: Methadone
Outcome Measures: significant pain relief (reduction of Numeric Rating Scale (NRS) of 50%);   time to achieve significant pain relief;   side-effect profile
6 Recruiting Methadone vs Magnesium in Spinal Fusion
Condition: Idiopathic Scoliosis
Interventions: Drug: Methadone hydrochloride;   Drug: Magnesium Sulfate;   Drug: Remifentanil
Outcome Measures: Intra- and Post-operative Pain Relief;   Intra-operative parameters
7 Not yet recruiting Drug Interaction & Methadone & Buprenorphine
Condition: Hepatitis C
Interventions: Drug: Methadone;   Drug: DCV 3DAA FDC;   Drug: BMS-791325;   Drug: Buprenorphine;   Drug: Naloxone
Outcome Measures: Maximum observed concentration (Cmax) of R-Methadone for Part 1;   Area under the concentration-time curve in one dosing interval (AUC(TAU)) of R-Methadone for Part 1;   Cmax of Buprenorphine and Norbuprenorphine for Part 2;   AUC(TAU) of Buprenorphine and Norbuprenorphine for Part 2;   Cmax of S-Methadone and Total Methadone for Part 1;   AUC(TAU) of S-Methadone and Total Methadone for Part 1;   Concentration at 24 hours (C24) of S-Methadone, Total Methadone and R-Methadone for Part 1;   Time of maximum observed concentration (Tmax) of S-Methadone, Total Methadone and R-Methadone for Part 1;   C24 of Buprenorphine and Norbuprenorphine for Part 2;   Tmax of Buprenorphine and Norbuprenorphine for Part 2;   Ratio of metabolite AUC(TAU) to parent AUC(TAU) (MR_AUC(TAU)) of Norbuprenorphine to Buprenorphine;   Cmax of of Daclatasvir (DCV) , Asunaprevir (ASV) , BMS-791325, and BMS-794712;   AUC(TAU) of DCV, ASV, BMS-791325, and BMS-794712;   Concentration at 12 hours (C12) of DCV, ASV, BMS-791325, and BMS-794712;   Tmax of DCV, ASV, BMS-791325, and BMS-794712;   MR_AUC(TAU) for BMS-794712 to BMS-791325;   Incidence of Adverse Events (AEs), Serious Adverse Events (SAEs), death and AEs leading to discontinuation;   Results of vital signs, Electrocardiograms (ECGs), Physical Examinations (PEs) and clinical labs;   Scores of Clinical Opiate Withdrawal Scale (COWS), Subjective Opiate Withdrawal Scale (SOWS), Objective Opiate Withdrawal Scale (OOWS), and Opiate Overdose Assessment (OOA)
8 Recruiting Pharmacokinetics of Multiple Dose Methadone in Children Treated for Opiate Withdrawal
Condition: Opiate Withdrawal Syndrome
Intervention: Drug: Methadone
Outcome Measures: PK Parameters after multiple doses of enteral Methadone;   PK of Methadone's primary metabolite EDDP;   PK of R- and S-enantiomers of Methadone;   Correlation between plasma and DBS samples;   Correlation between plasma and scavenge samples;   Influence of CYP3A4 and CYP3B6 genetic polymorphisms on Methadone PK;   Methadone pharmacodynamics using the WAT-1;   Adverse events
9 Unknown  Perioperative Opioid-induced Hyperalgesia and Its Prevention With Ketamine and Methadone
Conditions: Post Operative Pain;   Hyperalgesia
Interventions: Drug: ketamine infusion;   Drug: Methadone PCA
Outcome Measures: the extent of hyperalgesia area proximal to surgical wound;   pain intensity;   opioids related adverse events
10 Unknown  Methadone Versus Morphine for Orthopedic Surgery Patients
Conditions: Fracture;   Pain, Postoperative
Interventions: Drug: Methadone;   Drug: Morphine
Outcome Measures: Opioid consumption during the 48 hours after surgery;   Time to initial dose of rescue analgesic;   Overall rescue analgesic;   Side effects with special attention paid to respiratory rate and possible respiratory depression, and PONV;   Overall satisfaction of the patient with the analgesic graded on a scale of 1-5
11 Recruiting Evaluation of the Efficacy and Safety of Two Methadone Titration Methods for the Treatment of Cancer-related Pain With Inadequate Pain Relief or Intolerable Side Effects When Treated With Level 3 Opioids.
Condition: Pain Related to Cancer
Intervention: Drug: Methadone
Outcome Measure: Binary main criterion based on success/failure rate related to Methadone switch on Day 4.
12 Unknown  Efficacy of Drug and Risk Counseling Among Methadone Patients in Jakarta, Indonesia
Conditions: HIV Risk Behaviors;   Heroin Injection;   Retention in Methadone Treatment
Interventions: Behavioral: Behavioral Drug and Risk Counseling (BDRC);   Behavioral: Methadone maintenance treatment
Outcome Measures: Injection drug use;   retention in Methadone treatment
13 Unknown  Role of CYP2B6, CYP3A4, and MDR1 in the Metabolic Clearance of Methadone
Condition: Substance-Related Disorders
Interventions: Drug: midazolam(drug), digoxin (drug);   Drug: Bupropion (drug);   Drug: Methadone (drug)
Outcome Measures: Explore if there is a correlation between the areas of the concentration curves of probe substrates for CYP3A4 and/or CYP2B6 and Pgp and the area of the concentration curve of Methadone.;   LC-MS assays will be developed to analyze the plasma content of the probe substrates, Methadone and their metabolites. Specifically, midazolam, 1-OH midazolam, bupropion, t-butyl-hydroxy bupropion, digoxin, Methadone, and EDDP (a Methadone metabolite).;   Isolate and bank the DNA of the subjects for future genotyping of variant alleles that will be identified in this study to be important in Methadone pharmacokinetics.
14 Recruiting Efficacy Methadone for Management Postoperative Pain After the Use of Anesthesia Intravenous in Laparoscopic Cholecystectomy
Condition: Pain, Postoperative
Interventions: Drug: Morphine;   Drug: Methadone;   Drug: TIVA
Outcome Measures: Difference in milligrams of morphine used as rescue analgesia;   Difference in pain scores, using the Numeric Rating Scale
15 Not yet recruiting Pilot Study of Nicotine Nasal Spray and Varenicline on Smoking in Methadone-Maintained Patients
Conditions: Cigarette Smoking;   Methadone Maintenance
Interventions: Drug: Nicotine Nasal Spray;   Drug: Varenicline;   Drug: Placebo Nasal Spray;   Drug: Placebo Varenicline
Outcome Measures: Proportion of daily cigarettes smoked in the 4 hours after receiving Methadone dose;   Cigarettes per day;   Carbon monoxide level
16 Recruiting Pupillometry and Pain Thresholds Patients Substituted by Methadone and Buprenorphine
Conditions: Opiate Dependent;   Previous Illicit Drug Use
Intervention: Drug: Buprenorphine and Methadone Hydrochloride
Outcome Measures: Measurement of the pupil diameter;   - The mechanical punctuate pain threshold as measured by Electronical Von Frey;   - The mechanical pressure pain threshold measured by Algometer on the tibial bone;   - The pupil diameter measured in scotopic .conditions (via infrared camera) at the hypothetical peak effect of either Methadone or buprenorphine.;   - The pupil diameter measured in photopic conditions (via infrared camera) at the hypothetical residual effect of either Methadone or buprenorphine
17 Recruiting Buprenorphine and Methadone for Opioid-dependent Chronic Back Pain Patients
Condition: Low Back Pain
Interventions: Drug: Methadone;   Drug: Buprenorphine/naloxone
Outcome Measures: Analgesia;   Illicit drug use;   Cravings;   Functioning;   Depression;   Treatment retention
18 Recruiting Conversion From Parenteral to Oral Methadone.
Condition: Pain
Interventions: Drug: Parenteral /oral Methadone ratio 1:2;   Drug: Parenteral /oral Methadone ratio 1:1.2
Outcome Measures: Proportion of intoxicated patients in each groups;   Parenteral/oral MTD final ratio in patients considered as "failure"
19 Recruiting Methadone in Pediatric and Adult Sickle Cell Patients
Condition: Sickle Cell Disease
Interventions: Drug: Morphine;   Drug: Methadone
Outcome Measures: To determine the pharmacokinetics of Methadone in children and adults with Sickle Cell disease experiencing a VOE.;   Pain
20 Unknown  Switching From Morphine to Oral Methadone Plus Acetaminophen in the Treatment of Cancer Pain
Conditions: Cancer;   Pain;   Palliative Care
Intervention: Drug: Methadone plus Acetaminophen or Placebo
Outcome Measures: Pain intensity and time to equianalgesic effect;   Degree of nausea, vomiting, obstipation, xerostomia and drowsiness