Ceza Hukuku

Home/Articles/Ceza Hukuku
Ceza HukukuAv. Mustafa MALGIRAugust 2, 2026

Drug Offenses — Distinction Between Personal Use, Possession and Trafficking

Drug Offenses — Distinction Between Personal Use, Possession and Trafficking

Drug offenses are among the offense types for which Turkish criminal law prescribes the most severe sanctions. Article 188 of the Turkish Criminal Code No. 5237 (TCC) regulates the offense of manufacturing and trafficking of narcotic drugs, while Article 191 regulates the offense of purchasing, accepting, or possessing narcotic drugs for personal use, or using narcotic drugs. The distinction between these two offense types creates significant differences in terms of penalty amounts: while the trafficking offense prescribes imprisonment from ten to twenty years, the personal use offense prescribes imprisonment from two to five years and includes treatment and probation measures. This article examines in detail how the use-trafficking distinction is made in drug offenses, Court of Cassation criteria, probation and treatment measures, effective remorse provisions, and practical issues encountered in application.

TCC Art. 188: Offense of Manufacturing and Trafficking of Narcotic Drugs

Pursuant to TCC Art. 188/1, a person who manufactures, imports, or exports narcotic or stimulant substances without a license or contrary to a license shall be sentenced to imprisonment from twenty to thirty years and a judicial fine from two thousand to twenty thousand days. Pursuant to TCC Art. 188/3, a person who sells, offers for sale, gives to others, dispatches, transports, stores, purchases, accepts, or possesses narcotic or stimulant substances without a license or contrary to a license within the country shall be sentenced to imprisonment of not less than ten years and a judicial fine from one thousand to twenty thousand days.

The material elements of the trafficking offense have been defined quite broadly. All acts of selling, offering for sale, giving to others, dispatching, transporting, storing, purchasing, accepting, and possessing are evaluated within the scope of the trafficking offense. The critical point here is whether these acts were committed for the purpose of trafficking. When the same acts (purchasing, accepting, possessing) are committed for personal use, they are evaluated within the scope of TCC Art. 191.

Pursuant to TCC Art. 188/4, if the narcotic or stimulant substances are heroin, cocaine, morphine, synthetic cannabinoid and their derivatives, or base morphine, the penalty shall be increased by half. This regulation aims to impose heavier penalties for the trafficking of substances considered more dangerous to public health [TO BE VERIFIED].

Pursuant to TCC Art. 188/5, if the drug trafficking offense is committed within the framework of a criminal organization's activities, the penalty shall be increased by half. Additionally, pursuant to TCC Art. 188/4-b, the commission of the offense within two hundred meters of schools, dormitories, hospitals, barracks, or places of worship is regulated as an aggravating factor [TO BE VERIFIED]. These regulations are aggravating circumstances aimed specifically at protecting children and society.

TCC Art. 191: Offense of Purchasing, Accepting, or Possessing Narcotic Drugs for Personal Use

Pursuant to TCC Art. 191/1, a person who purchases, accepts, or possesses narcotic or stimulant substances for personal use, or who uses narcotic or stimulant substances, shall be sentenced to imprisonment from two to five years. This offense type prescribes much lighter sanctions compared to the trafficking offense and adopts a treatment-oriented approach.

Pursuant to TCC Art. 191/2, in the investigation initiated for this offense, a decision shall be made to defer the filing of a public prosecution against the suspect for a period of five years. During this period, a probation measure shall be applied against the suspect. The decision to defer the filing of a public prosecution is a regulation specific to the use offense and is not applied in trafficking offenses.

During the deferral period, the suspect is obligated to comply with the probation measure and fulfill the obligations imposed. If, during the deferral period, the person again purchases, accepts, possesses, or uses narcotic drugs for personal use, or acts contrary to the obligations related to the probation measure, a public prosecution shall be filed against them.

The legislator's fundamental purpose in regulating the personal use offense is the treatment and social reintegration of drug addicts rather than their punishment. This approach is consistent with modern criminal law understanding, and similar trends are observed in the drug policies of many countries.

How Is the Use-Trafficking Distinction Made? Court of Cassation Criteria

The distinction between use and trafficking is the most critical issue in drug offenses. This distinction determines whether the defendant will receive imprisonment of not less than ten years or imprisonment from two to five years. The Court of Cassation has developed various criteria for making this distinction. These criteria are evaluated not individually but collectively.

Quantity Criterion

The quantity of narcotic drugs seized is one of the most important criteria in the use-trafficking distinction. According to Court of Cassation precedents, the seizure of narcotic drugs in quantities exceeding the personal use limit indicates a trafficking purpose. However, there is no definitive legal regulation on what constitutes the personal use quantity, and this matter has been shaped by Court of Cassation precedents.

In various decisions of the Court of Cassation, approximate values for annual personal use needs have been determined. However, these quantities are not absolute limits and may vary according to the circumstances of the specific case. As a general assessment:

Type of Narcotic DrugAnnual Personal Use Quantity (Approximate)Source
Cannabis (marijuana)Around 600 grams - 1 kgCourt of Cassation precedents [TO BE VERIFIED]
HeroinAround 30 gramsCourt of Cassation precedents [TO BE VERIFIED]
CocaineAround 30-50 gramsCourt of Cassation precedents [TO BE VERIFIED]
MethamphetamineAround 30 gramsCourt of Cassation precedents [TO BE VERIFIED]
Synthetic cannabinoid (bonzai)Quantity variesCourt of Cassation precedents [TO BE VERIFIED]

The quantity criterion is not determinative on its own. Even if the quantity is below the personal use limit, trafficking may be established in the presence of other criteria; even if the quantity is above the personal use limit, the personal use offense may be accepted if other conditions support a personal use purpose.

Variety Criterion

The seizure of more than one type of narcotic drug is an important indicator supporting a trafficking purpose. According to Court of Cassation decisions, the simultaneous possession of different types of narcotic drugs suggests that they were prepared for sale. For example, the finding of cannabis, heroin, and synthetic drugs on the same person is a factor evaluated in favor of trafficking.

Possession of a single type of substance generally supports a personal use purpose. However, if a single type of substance is seized in very large quantities, trafficking may still be at issue. Therefore, the variety criterion must also be evaluated together with other criteria.

Packaging and Preparation Criterion

The possession of narcotic drugs in small packages ready for sale is one of the strongest indicators of trafficking purpose. The Court of Cassation accepts the existence of packages prepared for sale (bagged, weighed, dosed) as material evidence of the trafficking offense. The seizure of precision scales, packaging materials, and similar tools is also evaluated in this context.

In contrast, the possession of narcotic drugs in a single piece, unpackaged, supports a personal use purpose. Users generally purchase the substance in a single transaction and keep it for their own use; they do not package it for sale.

Location and Manner of Possession

Where and how the narcotic drug is possessed is also taken into consideration in the distinction. The storage of narcotic drugs at multiple locations, the use of different concealment methods, and the possession of narcotic drugs at a location suitable for sale are factors evaluated in favor of trafficking. For example, a person storing narcotic drugs at their home, in their vehicle, and at their workplace may indicate a trafficking purpose.

Communications and Witness Statements

The defendant's phone records, messages, and social media communications are important evidence revealing trafficking purpose. Communication records relating to conversations with buyers, price negotiations, and meeting arrangements are frequently used in proving the trafficking offense. Encrypted or coded communication patterns are also evaluated as indicators of trafficking activity.

Witness statements, particularly the testimonies of persons who declare that they purchased narcotic drugs, can be determinative in the distinction. Multiple persons declaring that they purchased narcotic drugs from the defendant constitutes one of the strongest pieces of evidence for the trafficking offense.

Economic Situation

The disproportionality between the defendant's income level and standard of living is also a criterion evaluated in favor of trafficking. A person without regular income leading a luxurious lifestyle or having unexplained income sources may be accepted as evidence of drug trafficking. Money movements, bank accounts, and cash flow are examined in this context.

Probation and Treatment Measures (TCC Art. 191)

In the offense of possessing narcotic drugs for personal use (TCC Art. 191), the legislator has adopted a treatment and rehabilitation-oriented approach instead of punishment. Pursuant to TCC Art. 191/2, in the investigation initiated for this offense, a decision shall be made to defer the filing of a public prosecution against the suspect for a period of five years.

During the deferral period, the suspect is subjected to a probation measure. Within the scope of probation, the following obligations may be imposed on the suspect: participating in designated programs, receiving treatment, periodically providing drug tests, reporting to the probation directorate at specified intervals, and participating in educational programs.

During the probation process, the suspect is monitored by the Probation Directorate. The Directorate supervises whether the suspect complies with their obligations and prepares regular reports. In case of violation of obligations, this situation is reported to the public prosecutor's office.

If the suspect complies with their obligations during the deferral period and does not use narcotic drugs again, a decision of non-prosecution is rendered at the end of the deferral period. Thus, no conviction decision is rendered against the person and no record is entered in the criminal record.

However, if the suspect again uses narcotic drugs or acts contrary to their obligations during the deferral period, a public prosecution is filed. Regarding whether a second deferral decision can be made, legal regulations and Court of Cassation precedents are important. Pursuant to TCC Art. 191/4, if the person again purchases, accepts, possesses, or uses narcotic drugs for personal use during the deferral period, a public prosecution is filed [TO BE VERIFIED].

Effective Remorse in Drug Offenses (TCC Art. 192)

The effective remorse provisions regulated in TCC Art. 192 offer a very important opportunity for penalty reduction in drug offenses. Effective remorse refers to a person who has participated in a crime assisting in the revelation of the crime before or after the official authorities are informed.

Effective remorse provisions are applied at two separate levels:

Type of Effective RemorseLegal BasisResult
Full effective remorse (before authorities are informed)TCC Art. 192/1No sentence imposed
Partial effective remorse (after authorities are informed)TCC Art. 192/3Sentence reduced from 1/4 to 1/2
User's request for treatmentTCC Art. 192/4No sentence imposed

Pursuant to TCC Art. 192/1, a person who, before the official authorities are informed, facilitates the apprehension of criminals or the seizure of narcotic substances by informing the authorities of other accomplices and the places where narcotic substances are hidden or manufactured shall not be sentenced. This regulation results in non-punishment and is called full effective remorse.

Pursuant to TCC Art. 192/3, a person who, after the offenses are reported, voluntarily serves and assists in the revelation of the offense and the apprehension of the perpetrator or other accomplices shall have their sentence reduced from one quarter to one half. This regulation is considered partial effective remorse.

Pursuant to TCC Art. 192/4, if a person who uses narcotic or stimulant substances applies to the official authorities requesting treatment before an investigation is initiated regarding the purchase, acceptance, or possession of narcotic or stimulant substances for personal use, no sentence shall be imposed. This regulation encourages the referral of addicted persons to treatment.

Search and Evidence Collection in Drug Offenses

Search and evidence collection procedures in drug offenses are subject to the CPC's search and seizure provisions (CPC Art. 116-134). A search is, as a rule, conducted by court order; in cases where delay is dangerous, a search may also be conducted by the written order of the public prosecutor, or, if the public prosecutor cannot be reached, by the written order of the law enforcement supervisor.

Unlawful search and seizure procedures in drug offenses result in the inability to use the obtained evidence. Pursuant to CPC Art. 206/2-a, evidence obtained through unlawful means cannot be taken as the basis for a judgment. Therefore, the lawfulness of the search order constitutes one of the most important defense points in drug cases.

The difference between a judicial search and a preventive search is also important in drug offenses. While a judicial search is conducted by court order based on suspicion of a crime, a preventive search is conducted to prevent the commission of a crime. Whether evidence obtained in a preventive search can be used in a judicial investigation is a controversial subject [TO BE VERIFIED].

Points to be considered in the search procedure include the scope of the search order, the manner in which the search is conducted, the presence of witnesses, and the proper preparation of the search record. Failure to comply with these procedures may result in the obtained evidence being deemed unlawful.

Detention and Judicial Control in Drug Offenses

The drug trafficking offense (TCC Art. 188) is among the catalogue offenses listed in CPC Art. 100/3. Therefore, in drug trafficking offenses, the existence of strong suspicion of the crime allows for the presumption of grounds for detention. However, this presumption is of a rebuttable nature depending on the circumstances of the specific case, and detention is not automatic.

In the offense of possessing narcotic drugs for personal use (TCC Art. 191), the practice of detention is more limited. Since the upper limit of the penalty for this offense is five years and the risk of flight or evidence tampering is low given the nature of the offense, judicial control measures are generally considered sufficient in personal use offenses. Within the scope of judicial control, measures such as travel bans, signature obligations, and similar measures may be applied.

Organizational Connection in Drug Offenses

The commission of the drug trafficking offense within the framework of a criminal organization causes a significant increase in the penalty. Pursuant to TCC Art. 188/5, if the offense is committed within the framework of an organization's activities, the penalty shall be increased by half. Additionally, pursuant to TCC Art. 220, the offenses of establishing and managing a criminal organization and being a member of an organization are separately punished.

In proving the organizational connection, elements such as hierarchical structure, division of labor, continuity, and organization are sought. The Court of Cassation conducts a strict evaluation of evidence in determining the organizational connection in drug trafficking and seeks the establishment of the organizational structure through concrete evidence. The mere fact that the quantity of narcotic drugs is large or that multiple persons acted together is not sufficient for the acceptance of an organizational connection.

Penalty Increase and Reduction Factors in Drug Offenses

There are various factors that increase and reduce the penalty in drug offenses. These factors play an important role in the individualization of the penalty.

Among the aggravating factors are the following: the narcotic substance being heroin, cocaine, morphine, or base morphine (TCC Art. 188/4-a), the offense being committed within the framework of an organization's activities (TCC Art. 188/5), the offense being committed near certain locations (TCC Art. 188/4-b) [TO BE VERIFIED], the sale of narcotic drugs to children or the use of children in the offense, and the offense being committed by members of professions such as physicians, pharmacists, or chemists (TCC Art. 188/8).

Among the mitigating factors, effective remorse (TCC Art. 192), attempt (TCC Art. 35), minority (TCC Art. 31), mental illness (TCC Art. 32), and discretionary reduction (TCC Art. 62) can be listed. These reduction factors may be applied together or separately depending on the circumstances of the specific case.

Practical Issues Encountered

One of the most important issues encountered in practice in drug offenses is the difficulty in making the use-trafficking distinction in specific cases. Criteria such as quantity, variety, and packaging may lead to different evaluations in each specific case, and similar facts may be characterized differently by different courts. This situation creates problems in terms of the principle of legal predictability.

Another important issue is the effectiveness of probation measures. There are criticisms that the probation and treatment measures applied in personal use offenses are insufficient, that substance addiction is not adequately treated, and that individuals reoffend. Strengthening the treatment infrastructure is of key importance in solving this issue.

Unlawful practices in search and evidence collection processes are also among the frequently encountered issues in practice. The inability to use evidence obtained through unlawful searches makes proving the offense difficult and may lead to the dismissal of the case. This situation demonstrates the necessity for law enforcement to meticulously comply with search procedures.

The constantly changing chemical structure of synthetic narcotic drugs also constitutes an important legal issue. The addition of newly synthesized substances to narcotic drug lists takes time, and legal gaps may occur during this period [TO BE VERIFIED].

Conclusion and Evaluation

Drug offenses are among the offense types for which the most severe sanctions are prescribed in Turkish criminal law. The distinction between use and trafficking radically changes the penalty the defendant will receive, and making this distinction correctly is vitally important for the right to a fair trial. Criteria such as quantity, variety, packaging, communication records, and economic situation should be evaluated as a whole, and each specific case should be handled within its own circumstances. The treatment and probation-oriented approach in personal use offenses is an important regulation aimed at rehabilitation rather than punishment, and the effective implementation of these measures is of great importance. Effective remorse provisions function as a critical tool in the illumination of drug offenses and the dismantling of criminal organizations.

Legal Disclaimer: This article has been prepared for general informational purposes and does not constitute legal advice. If you are facing a specific legal issue related to drug offenses, it is recommended that you consult an attorney. Information may vary in line with legislative changes and current judicial decisions.

This article was prepared by Av. Mustafa MALGIR.

Last Updated: August 2, 2026
Write to Us