Codeine Addiction: The Signs, the Dangers and the Other Painkillers That Cause Dependence

Codeine addiction usually starts with real pain. Learn the signs, the daily dangers and the painkillers that cause dependence, then get help.

Codeine addiction in South Africa rarely begins with a decision to use drugs. It usually begins with genuine pain and a pharmacy product that helped. Maybe it was a migraine that Myprodol finally touched, or a cough that only a codeine syrup could settle. The shift from taking codeine for pain to needing it to feel normal often happens quietly, before anyone notices.

Codeine sits behind the counter at almost every pharmacy in the country, which makes it feel harmless. The pharmacology says otherwise. Your liver turns codeine into morphine, and it acts on the same brain receptors as heroin. The signs are recognisable once you know them, and most of the products behind codeine addiction here are sold legally.

How Codeine Addiction Develops

Codeine is an opioid, and that single fact explains most of what follows. When you take a codeine tablet or syrup, your body converts part of it into morphine, the compound hospitals use for severe pain. The brain reads that morphine as relief and, with repeated use, starts to expect it.

Tolerance comes first. After a few weeks of regular use, the dose that once eased your pain stops working, so you take a bit more. Withdrawal comes next, where a missed dose makes your body react with what feels like a flu that keeps returning. By the time both are present, the use has changed from treating pain into preventing withdrawal.

Is codeine addictive?

Yes. Codeine carries a genuine risk of tolerance and dependence, which is why its South African packaging warns against using it for longer than five days without medical advice. Regulators put it plainly: codeine can cause tolerance and dependence, and in high doses it can cause poisoning or death. Most people who take a codeine combination for a few days of acute pain never develop a problem, and the risk climbs with regular, repeated use.

How long does it take to get addicted to codeine?

There is no fixed timeline, which is part of the danger. Tolerance can start within a couple of weeks of daily use. Some people use codeine for months at a low, steady dose without dependence taking hold, while others escalate fast. Genetics matter as well, because people convert codeine into morphine at different speeds, and a portion of the population are ultra-rapid metabolisers who feel stronger effects and can become dependent sooner.

Can you buy codeine over the counter in South Africa?

In most cases yes, within limits. Codeine combination tablets like Myprodol or Mybulen are Schedule 2 medicines, so you can buy them without a doctor’s script, though only from a pharmacist and only in small quantities. The rules cap each pack at a five-day supply and one pack per customer, and the pharmacist is meant to record the sale.

Those controls work inside a single pharmacy. They fall apart when someone buys the same product across several pharmacies in a week, which is how a lot of codeine dependence stays hidden.

The Signs of Codeine Addiction

The symptoms of codeine addiction show up in three places.

Physical signs

The body adapts to codeine regardless of what you want. The clearest physical signs include:

• needing a higher dose to get the relief you once got from less
• withdrawal when a dose is late or missed, felt as sweating, watery eyes, a runny nose and broken sleep
• a “flu that will not go away”, which is usually low-level withdrawal between doses
• constipation that began around the time the codeine did and never settled
• pinpoint pupils after a dose, with drowsiness or nodding off mid-conversation

Behavioural signs

Behaviour usually shifts before anyone admits there is a problem. Watch for:

• buying from several pharmacies so no single pharmacist sees the whole picture
• buying online or from informal sellers once pharmacy purchases draw comment
• small supplies tucked away in a car or a handbag pocket
• buying a cough syrup such as Benylin with codeine when there is no real cough
• mixing codeine syrup into a soft drink, the pattern known as lean
• reaching for codeine before situations that have nothing to do with pain, like a tense meeting or a social event
• getting defensive when a family member asks how much is being used

Psychological signs

The mental signs are the quietest and the most telling:

• thinking about the next dose through the day
• anxiety when supply runs low
• carrying on even after the harm is obvious
• talking yourself into believing the pain is worse than it is, to justify the dose
• reaching for codeine to manage stress or low mood rather than physical pain
• secrecy and shame around something bought at a pharmacy
• the line that gives it away more than any other: “I am not addicted, I just need it for my back”

In clinical terms this pattern has a name: opioid use disorder. It applies to heroin and to a codeine tablet from a respectable pharmacy alike. The label matters far less than the pattern. Recognising yourself or someone you love in these lists matters more than any diagnosis.

The Dangers of Codeine Addiction

What codeine addiction does to your body, in the South African context, is often not what people expect. Almost every common codeine tablet is a combination product. Myprodol pairs codeine with ibuprofen and paracetamol, and Mybulen does the same. To chase the codeine, you swallow rising amounts of the other two, and that is where much of the real damage starts.

What are the side effects of taking codeine daily?

Daily codeine has two layers of harm. The first is the codeine itself. It brings constipation that never clears, because opioids slow the gut. It can also bring rebound headaches, where the very painkiller you take becomes the reason the headaches keep coming back, along with a low mood, a quiet depression the codeine then seems to lift.

The second layer is the one people miss. Paracetamol is safe at normal doses and dangerous in excess, and a paracetamol overdose can destroy the liver, with the warning signs often appearing only a day or two later, once the harm is done. Ibuprofen taken at high doses for months wears at the stomach lining and the kidneys. The result can be a bleeding ulcer or kidney damage, neither of which announces itself early.

Is Myprodol addictive?

Myprodol can be habit-forming because it contains codeine, an opioid. Used for a few days for an injury or after surgery, it does its job and most people stop without trouble. The risk comes from long, repeated use, where the body builds tolerance to the codeine while the daily paracetamol and ibuprofen add up their own harm. The same logic applies to Mybulen and to any other codeine combination on the shelf.

There is also an acute danger. Codeine is an opioid, and in large amounts opioids slow breathing, so the risk of a dangerous overdose climbs sharply when codeine is taken with alcohol or with sedatives such as sleeping tablets. That mix can slow breathing to the point where it stops, which is the scenario behind most codeine-related deaths. It is also why lean, codeine syrup poured into a soft drink and often taken with alcohol, is far more dangerous than its casual image suggests.

South African research into codeine misuse and dependence has tracked it among the substances people are admitted for. The people affected are often in their thirties and frequently women, and many never touched a street drug. 

Other Painkiller Drugs That Cause Addiction

Codeine is the most common painkiller behind dependence in South Africa, but it is not the only one. A handful of stronger prescription painkillers carry the same risk, usually starting from a real script for real pain. Knowing the shape of each one helps you spot it in yourself or someone close to you.

What is the most addictive painkiller?

Among the painkillers covered here, fentanyl is the most potent and carries the highest overdose risk by a wide margin. On the street, illicit fentanyl is the most dangerous opioid of all, though that is mainly a United States problem rather than a South African one. For the medicines South Africans actually encounter, codeine and tramadol cause the most dependence, simply because they are the ones most widely prescribed and sold.

Tramadol (Tramacet, Tramahexal, Tramal)

Tramadol is a prescription-only opioid, a Schedule 5 medicine in South Africa, and it is stronger than codeine for many people. It usually enters someone’s life through a script for back pain or pain after surgery, which can continue for years. Its withdrawal is harder than codeine’s, with more anxiety and disrupted sleep, and it carries a risk of seizures. That risk exists because tramadol acts on serotonin pathways as well as opioid receptors, so stopping it suddenly is a job for medical supervision.

Morphine

Morphine is prescribed for severe pain, the kind that follows major surgery or comes with cancer care. Used under supervision for genuine severe pain, it is a humane and necessary medicine. Dependence develops with regular use, and the hard cases tend to be people whose pain has resolved while their use has not. Morphine withdrawal is thoroughly unpleasant, though not usually a threat to life on its own.

Oxycodone

Oxycodone is prescribed less often in South Africa than in the United States, where it sat at the centre of that country’s opioid crisis. South Africa’s painkiller problem runs mostly through codeine rather than oxycodone, so the scale here is different. The dependence pathway is identical, though: a prescription for real pain that gives way to rising tolerance and use that outlives the injury.

Pethidine

Pethidine is an older opioid, used mostly in hospitals and rarely prescribed for long-term home use. Its historical dependence pattern showed up most among healthcare workers who had access to it. For the general public it is a small part of the picture, but it belongs on the list.

The painkillers that do not cause addiction

It helps to be clear about what does not belong here. Plain paracetamol such as Panado, taken on its own, does not cause addiction. Nor do anti-inflammatories like ibuprofen or diclofenac. Taking too much of these can still do real harm, paracetamol to the liver and anti-inflammatories to the stomach and kidneys, but that is a medical problem rather than an addiction one.

People often confuse taking a lot of Panado with dependence, and the difference is worth holding onto.

Painkiller	Common SA Brands	Mainly Prescribed For	Signs of Misuse	Withdrawal Severity
Codeine	Myprodol, Mybulen, Benylin with codeine	Mild to moderate pain, dry cough	Rising doses, pharmacy-shopping, use without pain, lean	Uncomfortable, rarely dangerous alone
Tramadol	Tramacet, Tramahexal, Tramal	Moderate to severe pain	Escalating dose, early refills, use beyond the injury	Moderate, seizure risk, needs supervision
Morphine	MST Continus, morphine sulphate	Severe, cancer and post-surgical pain	Use past the point pain resolved, requests for higher doses	Uncomfortable, not usually life-threatening alone
Oxycodone	OxyContin (uncommon in SA)	Severe pain	Rising tolerance, doctor-shopping	Uncomfortable, not usually life-threatening alone
Pethidine	Pethidine (hospital use)	Acute and procedural pain	Access-driven use, often occupational	Uncomfortable

Why Codeine Addiction Is Hard to Recognise

Codeine addiction hides better than almost any other kind, and the reason is simple. In most cases the pain was real. The headache existed and the codeine helped, so the use began for an honest reason. That honest start later becomes the defense that keeps the problem in place.

There is a difference in shame as well. Someone using a street drug usually knows what they are doing. Someone leaning on codeine often believes, with full sincerity, that they are managing a medical condition rather than feeding a dependence.

Pharmacists miss it because South African pharmacies vary in how closely they track Schedule 2 sales, and buying across several shops defeats any single shop’s record. Doctors miss it because a rushed consultation leaves little time to notice a dose creeping upward, and some patients spread their use across more than one practice. A national system to record codeine sales across every pharmacy has been discussed for years and is still not fully in place, which leaves recognition resting on the person and the people around them.

What to Do If You Recognise These Signs

How long do codeine withdrawals last?

Codeine withdrawal usually starts within a day of the last dose and eases over about two to four weeks, with sleep and mood often taking longer to settle. On its own it is draining rather than life-threatening. The picture changes when codeine has been mixed with alcohol or with sedatives, because those withdrawals can be medically serious and need supervision. Stopping suddenly on your own is rarely the safe move it sounds like.

A useful first step is a proper conversation with a doctor, not a quick exchange at a pharmacy counter. A full consultation changes the dynamic, because someone is finally looking at the whole pattern instead of selling the next pack. There is also a medical-aid point most people miss: opioid use disorder is a Prescribed Minimum Benefit in South Africa, even when the opioid is an over-the-counter codeine syrup, so most schemes have to cover assessment and the detox or inpatient care that follows.

Home tapering rarely works for established codeine dependence, because the withdrawal symptoms are very uncomfortable, and often are the barrier to stopping. At Changes Rehab in Johannesburg, the team looks past the codeine itself to the original pain or anxiety that started the use, and builds inpatient care around the whole picture.

Recognising any of this is reason enough to talk to someone who treats it for a living. Changes Rehab runs assessments and structured opioid treatment at its Johannesburg facility, and the admissions team is on 081 444 7000 to answer questions before you commit to anything. You can also read how we make use of medication to support opioid recovery, or reach a 24-hour helpline at any time.