A drug possession charge in Massachusetts is brought under G.L. c. 94C, § 34. For most substances, a first offense is a misdemeanor punishable by up to 1 year in jail. Heroin and repeat offenses carry more, and a second heroin possession conviction is a felony. The statute also gives first offenders a path to dismissal, and it protects people who call for help during an overdose. Here is what the law says and how these charges are defended.
At a Glance: Drug Possession
Up to 1 year
and/or up to $1,000 for most first offenses
Heroin: up to 2 years
first offense; a second offense is a felony
Knowing possession
without a valid prescription or other authorization
First-offender path
dismissal possible after a CWOF or probation
The law: G.L. c. 94C, § 34
What § 34 Prohibits
Section 34 says: “No person knowingly or intentionally shall possess a controlled substance unless such substance was obtained directly, or pursuant to a valid prescription or order, from a practitioner while acting in the course of his professional practice, or except as otherwise authorized” by Chapter 94C.
Massachusetts sorts controlled substances into five classes, A through E, under G.L. c. 94C, § 31. The class matters most for distribution and trafficking charges. For simple possession, § 34 sets one general penalty, with specific rules for heroin, marijuana, and Class E substances.
Possession with intent to distribute, trafficking, and school-zone charges are different offenses under other sections of Chapter 94C. This article covers simple possession.
What the Commonwealth Must Prove
The Commonwealth must prove beyond a reasonable doubt that:
- The substance was a controlled substance under Chapter 94C.
- You possessed it.
- You did so knowingly or intentionally.
Possession can be actual, meaning on your person, or constructive, meaning you knew where the drugs were and had the ability and intent to control them. Being near drugs is not enough by itself. See constructive possession.
Penalties
- Most controlled substances, first offense: up to 1 year in jail, a fine of up to $1,000, or both.
- Heroin, first offense: up to 2 years in the house of correction, a fine of up to $2,000, or both.
- Heroin, second or subsequent offense: 2½ to 5 years in state prison, or a fine of up to $5,000 and up to 2½ years in jail or the house of correction.
- More than 2 ounces of marijuana, or a Class E substance: up to 6 months in the house of correction, a $500 fine, or both.
- Repeat offenders (except Class E): after a prior § 34 conviction or a Chapter 94C felony, up to 2 years in the house of correction, a fine of up to $2,000, or both.
Only the second-or-subsequent heroin offense carries state prison, so it is a felony. The other § 34 offenses are misdemeanors. See the difference between misdemeanors and felonies.
First Offenders: CWOF, Probation, and Dismissal
Section 34 has its own first-offender provision. If a person charged under § 34 has no prior drug conviction and receives a continuance without a finding or probation, and completes it without violating any condition, “the court may dismiss the proceedings.”
For a first conviction for possessing marijuana or a Class E substance, with no prior Chapter 94C conviction, the statute says the person “shall be placed on probation” unless the person does not consent or the court files a written memorandum explaining why not. When that probation is completed, “the case shall be dismissed.”
Good Samaritan Protection for Overdoses
Under G.L. c. 94C, § 34A, a person who, in good faith, seeks medical help for someone experiencing a drug-related overdose “shall not be charged or prosecuted for possession of a controlled substance under section 34” if the evidence was gained as a result of seeking help. The same protection covers the person who overdosed. It also bars a probation, pretrial release, or parole violation based on that evidence. It applies to possession under § 34, not to distribution or trafficking. See Good Samaritan laws in Massachusetts.
What the 2018 Reform Changed, and What It Did Not
The 2018 criminal justice reform law, Acts of 2018, chapter 69, rewrote parts of the drug laws:
- It added fentanyl, carfentanil, and related synthetic opioids to Class A (section 45 of the Act).
- It replaced the list of Class B opioids such as methadone (section 46).
- It rewrote the Class B and Class C distribution statutes, §§ 32A and 32B (section 47), and added fentanyl and carfentanil trafficking provisions to § 32E (sections 49 to 51).
The Act did not change the § 34 possession penalties described above. A later law did: Acts of 2026, chapter 65, section 9, effective April 19, 2026, raised the marijuana threshold in § 34 from “one ounce” to “2 ounces.”
Defenses
- Unlawful search. If the stop, frisk, or search was unlawful, the drugs may be suppressed.
- No knowing possession. Proximity, a shared car, or a shared apartment does not prove you knew about the drugs or controlled them.
- The substance itself. The Commonwealth must prove what the substance was. Lab testing and chain of custody can be challenged.
- Lawful authorization. A valid prescription or other authorization under Chapter 94C is not a crime under § 34.
- Good Samaritan protection. If the evidence came from a call for help with an overdose, § 34A may bar the charge.
Why a Lawyer Matters
Most possession charges are misdemeanors, but the statute’s first-offender provision, the heroin rules, the Good Samaritan law, and the search issues in nearly every case all affect the outcome. Knowing which applies, and raising it at the right time, matters. In 23 years of defending clients in Massachusetts courts, I have handled many drug cases and know where these charges are weakest.
If you or a family member has been charged with drug possession, contact my office or call 781-393-5900.
Related Charges
- Drug Paraphernalia (G.L. c. 94C, § 32I): selling, or possessing or making with intent to sell, items for drug use, rather than possessing a drug.
- School Zone Drug Violation (G.L. c. 94C, § 32J): distribution-type offenses near a school, park, or playground, not simple possession.
- OUI-Drugs (G.L. c. 90, § 24(1)(a)): driving while impaired by drugs, whether or not possession is charged.
- Drug Charges and License Suspensions (G.L. c. 90, § 22½): when a drug conviction can still cost you your license.
Disclaimer
This article is for general educational information about Massachusetts criminal law. It is not legal advice for your situation, and reading it does not create an attorney-client relationship. Laws change. For advice about a specific case, speak with a licensed Massachusetts attorney.
