After taking chlordiazepoxide, 1 a medication prescribed by his physician, the defendant was involved in an automobile accident. At his trial on complaints charging *359 him with operating a motor vehicle “while under the influence of” drugs (G. L. c. 90, § 24[l][a] 2 ) and with operating “a [motor] vehicle negligently so that the lives or safety of the public might be endangered” (G. L. c. 90, § 24[2] [a] 3 ), the defendant was precluded, on objection by the Commonwealth, from introducing evidence that he had no knowledge of the effects of the medication and that he had not received warnings about using the drug before driving. The defendant was also unsuccessful in obtaining an instruction that the Commonwealth was required to prove that he knew or should have known that the drug might affect his ability to drive safely. The defendant was convicted of both charges. The trial judge imposed fines but stayed their payment pending appeal. We conclude that the excluded evidence was relevant and reverse the convictions.
The applicable portion of G. L. c. 90, § 24(1) (o), is set forth in the margin.
4
The Commonwealth contends that the provision is to be read as a “public welfare” statute imposing strict liability notwithstanding “innocent intent.” See
Commonwealth
v.
Buckley,
*360 We note at the outset that, at least in some cases, the literal wording of the statute is not to apply. For example, it cannot seriously be contended that the Legislature made it a crime to be forced at gunpoint to take drugs and drive or to drive after having unknowingly been slipped a drug within the statutory definition. At best, the statute is expressed elliptically. 5
The main thrust of G. L. c. 90, § 24(1)
(a),
is directed at the voluntary consumption of alcohol or drugs whose consequences are known or should be known to the user. This construction is borne out by
Commonwealth
v.
Dale,
Although the circumstances of a person who drives after taking a prescription drug unaware of its possible effects differ significantly from those of a person forced to drive after having a potion rammed down his throat or after being tricked, such circumstances also differ substantially from
*361
those of a person who drives after voluntarily consuming alcohol or drugs whose effects are or should be known.
7
The law recognizes the differences, and authorities have characterized as “involuntary intoxication by medicine” the condition of a defendant who has taken prescribed drugs with severe unanticipated effects. See LaFave & Scott, Criminal Law § 45, at 348 (1972); Perkins, Criminal Law 897 (2d ed. 1969) (“such intoxication is involuntary, because the patient is entitled to assume that an intoxicating dose would not be prescribed”).
8
See also
Commonwealth
v.
Sheehan,
The question remains, however, whether the Massachusetts Legislature in § 24(1)
(a)
intended to penalize driving after such consumption, even if characterized as nonvoluntary. In
Commonwealth
v.
Kraatz,
Of particular significance is the Third Report of the Judicial Council of Massachusetts, 1927 Pub. Doc. No. 144, at 35-37 (Report). That Report was subsequent to the decision in
Commonwealth
v.
Pentz,
While the Council was addressing the provision now found in § 24(2)(a), its arguments apply with equal vigor to § 24(1)(a). We also think it significant that, as set forth in the margin, 11 the Legislature and recent judicial decisions have avoided a construction which would impose imprisonment without fault under other parts of § 24 and under other provisions of the motor vehicle laws.
Our conclusion is strengthened by a rule of construction, followed in Massachusetts, which requires particular clarity of language before finding a legislative intent to create a “public welfare” offense punishable by a severe penalty.
12
*364
Because traditionally, at common law, some element of intent or knowledge was required before punishment could be imposed, see
Morissette
v.
United States,
*365 No such clear language appears in G. L. c. 90, § 24(1)(a). Accordingly, we hold that it was error to preclude the defendant from introducing evidence that he did not know of the possible effects of the medication on his driving ability, that he did not receive warnings as to its use, and that he had no reason to anticipate the effects which the drug induced. 15 His failure to receive warnings from his physician and pharmacist, if there is evidence of such failure, is relevant both to the charge of driving under the influence of drugs (G. L. c. 90, § 24[l][a]) and to the charge of negligence (G. L. c. 90, § 24[2][a]).
Since we conclude that the defendant is entitled to a new trial, we need not consider whether the form of the requested instruction as to the defendant’s knowledge was adequate to preserve this issue on appeal. Compare
Commonwealth
v.
Larmey, ante
281, 285 (1982), with
Commonwealth
v.
Sherry,
We consider briefly the other instructions sought by the defendant which may be requested on a retrial. The defendant has not cited any authority or made any persuasive argument in support of his conclusion that G. L. c. 94C, § 22(a), and G. L. c. 94C, § 21, require the broad warnings contained in his proposed instructions.
16
To the contrary, “[t]he obligation to give adequate information does not require the disclosure of all risks of a proposed therapy.”
Harnish
v.
Children’s Hosp. Medical Center,
Judgments reversed.
Verdicts set aside.
Notes
Commonly called Librium.
Unless otherwise indicated, citations to G. L. c. 90, § 24(1) (a), are to that section as appearing in St. 1971, c. 1071, § 4.
Unless otherwise indicated, citations to G. L. c. 90, § 24(2) (a), are to that section as appearing in St. 1975, c. 156, § 1.
“Whoever, upon any way or in any place to which the public has a right of access, or upon any way or in any place to which members of the public have access as invitees or licensees, operates a motor vehicle while under the influence of intoxicating liquor, or of marihuana, narcotic drugs, depressants or stimulant substances, all as defined in section one of chapter ninety-four C, or the vapors of glue, shall be punished by a fine of not less than thirty-five nor more than a thousand dollars, or by imprisonment for not less than two weeks nor more than two years, or both such fine and imprisonment.”
See Model Penal Code § 2.05 comment 3, at 145-146 (Tent. Draft No. 4, 1955).
The statement in Dale is not conclusive as to the interpretation of § 24 because the only defendant (there were two) charged with operating a motor vehicle while under the influence of intoxicating liquor was also charged with being drunk. That crime was defined as “the voluntary use of intoxicating liquor.” See G. L. c. 272, § 48, as in effect in 1927. The court did not distinguish between the two offenses, and it is possible that its discussion referred to the offense of drunkenness alone.
In the case of alcohol, our cases posit that “the effects of liquor upon the mind and actions of men are well known to everybody.”
Commonwealth
v.
Taylor,
The Model Penal Code § 2.08(5) (b) (1962) defines self-induced intoxication as follows: “intoxication caused by substances which the actor knowingly introduces into his body, the tendency of which to cause intoxication he knows or ought to know, unless he introduces them pursuant to medical advice or under such circumstances as would afford a defense to a charge of crime.”
In that case we referred only to G. L. c. 90, § 24(2) (a). However, prior to St. 1936, c. 434, §§ 24(1) (a) and 24(2) (a) were contained in a single section, § 24.
Statute 1928, c. 281, § 1, inserted the word “negligently” in § 24 so as to read, “Whoever upon any way . . . operates a motor vehicle . . . negligently so that the lives or safety of the public might be endangered . . . shall be punished . . .” (emphasis supplied). The current G. L. c. 90, § 24(2)(a), contains the same language.
The Legislature, in enacting St. 1926, c. 253, amended § 24 so as to require knowledge for the unauthorized use of a motor vehicle, thus rejecting the strict liability made possible by
Commonwealth
v.
Coleman,
There are certain exceptions, e.g., rape of a minor under sixteen where the offense may be committed “without any knowledge on the defendant’s part of the age of the victim.” Commonwealth v. Miller, 385 *364 Mass. 521, 522 (1982). For an explanation of the policy considerations of such exceptions, see Sayre, Public Welfare Offenses, 33 Colum. L. Rev. 55, 73-74 (1933).
By pointing out that “public welfare offenses” are usually found in situations where the accused “is in a position to prevent [the violation] with no more care than society might reasonably expect and no more exertion than it might reasonably exact from one who assumed his responsibilities,”
Morissette
v.
United States,
The Model Penal Code § 2.05 (1962) rejects the imposition of strict liability except for minor violations which do not impose imprisonment.
We do not imply that a jury could not in some instances find that a defendant had information sufficient to place on him a duty of inquiring of his doctor as to the possible effects of a prescription drug. In such circumstances, a conviction under § 24(1) (a) would be proper if it is found that the defendant was negligent in not asking, and hence not knowing, of such possible effects on his driving.
The instructions requested stated that a physician and a pharmacist are “required to warn patients ... of each and every adverse effect such medication might have on the patient.”
