by Edward M. Brecher and the Editors of Consumer
Chapter 16.
Methadone side effects No medication
produces only a single desired effect. Patients on methadone
maintenance report a wide range of side effects, especially
during the early weeks or months when their daily dose of
methadone is being stabilized. In New Orleans,
for example, Dr. William A. Bloom, Jr., of the Tulane University
School of Medicine, and an associate, Dr. Brian T. Butcher, gave
209 patients on methadone maintenance a checklist of 33 assorted
symptoms ranging from runny nose to loss of appetite, and asked
them to check any from which they suffered. As might be expected,
this highly suggestive procedure produced a bumper crop of
reported symptoms., Percentage Symptom of
Patients Reporting Weight gain 80 Constipation 70 Increased intake
of fluids 63 Delayed
ejaculation 60 Increased use of
alcohol 40 Increased
frequency of urination 37 Numbness of
hands and feet 32 Hallucinations
17 Dr. Avram
Goldstein of Stanford University carried out a similar study of
side effects in 206 methadone maintenance patients. This study 2
also revealed numerous side effects-but led to rather reassuring
conclusions. "Almost
without exception," Dr. Goldstein reported, "the body
symptoms complained of on methadone were present prior to
starting on the program, when the patient was using heroin. Most
of these improved on methadone, so that despite the natural
tendency to blame all troubles on the drug one happens to be
taking, it is difficult to classify them as side effects."
Examples of symptoms reported before methadone which showed
improvement while on methadone were headache, joint pains,
hiccups, diarrhea, loss of libido, nervousness, runny nose,
difficulty urinating, and unhappiness. Some other
complaints, Dr. Goldstein continued, were actually due to
inadequate methadone dosage during the build-up period. They
occurred principally in the evening, eight hours or longer after
methadone. "Symptoms
that fall into this category comprise the constellation
recognized by addicts as 'feeling sick,' including insomnia,
nausea and vomiting, muscle pains, and anorexia [lack of
appetite]." Those symptoms were relieved as the dose was
gradually increased. Excessive
sweating was a common complaint among Dr. Goldstein's California
patients. "It was present to some degree in three-fourths of
the patients before methadone and in moderate or severe form in
ten to fifteen percent. By the third month [on methadone] it had
become worse in 43 percent of the patients and better in about 30
percent, remaining unchanged in the remainder. There was no dose
relationship.' Other methadone side effects, Dr. Goldstein added
whimsically, were "dramatic reductions in the frequency of
theft and the amounts expended for heroin." Contrary to Dr.
Bloom's findings, Dr. Goldstein found that "excessive use of
alcohol remained unchanged as compared with premethadone use
(about 20 percent of patients), as did the use of amphetamines (5
to 10 percent), and marijuana (about 45 percent)." Use of
barbiturates declined from 20 percent before methadone to 6
percent while on methadone. The most
important point about these and other side effects, however, is
that-in New Orleans, in California, in New York, and in other
programs as well-they only rarely lead a patient to discontinue
methadone. In the Goldstein sample, for example, only five out of
206 patients left the program voluntarily, and several of these
dropped out because they were leaving the area.3 Some opponents
of methadone maintenance have alleged that it is part of a
genocide conspiracy against the black race-designed to render
black males impotent and both males and females sterile. Because
these charges are quite widely believed in some black
communities, they deserve the most thorough consideration. The
relevant data follow. Menstrual
function. In New York City's Beth Israel program, 82 out of 83
women addicts of childbearing age menstruated non-nally after
conversion to methadone-"usually within one to two
months." 4 Among 15 women
on the West Philadelphia methadone maintenance program, 8 did not
menstruate at all while on heroin. Seven out of the 8 began to
menstruate again when converted from black-market heroin to
methadone maintenance." Here and in most of the comparisons
that follow, however, it must be remembered that other changes in
life-style accompanied the conversion. just as heroin per se was
probably not responsible for all of the preconversion problems,
so methadone per se cannot be credited with all the
postconversion improvements. Only 4 of the 15
women in the West Philadelphia study had regular menstrual
periods while on heroin; 12 of the 15 had regular menstrual
periods on methadone maintenance. Of the 3 exceptions, one had
periods longer than normal, one had periods shorter than normal,
and one did not menstruate." Such variations are to be
expected, of course, in any group of women. The high rate of
improvement suggests that while heroin addiction and its
accompanying life-style (often including prostitution) may impair
menstrual function, permanent damage is rare. Female sexual
function. The 15 women in the West Philadelphia study were asked
to rate (1) their sex drive, (2) their sex activity, and (3)
their enjoyment of sex while on heroin and after conversion to
methadone. Only 4 of the 15 women reported normal sex drive on
heroin; this increased to 10 after conversion. Eleven women
reported below-average sex activity on heroin, as compared Aith 5
after conversion to methadone. Five reported normal enjoyment of
sex on heroin; this rose to 8 after conversion .7 Sexual
complaints, it should here be recalled, are also frequent among
nonaddicted women. Likelihood of
pregnancy. Increased likelihood of pregnancy is almost
universally reported as a side effect among female heroin addicts
who convert to methadone-though whether this is a pharmacological
result of the switch from heroin to methadone or of the
accompanying change in life-style remains in doubt. The
pregnancies are sometimes unwanted. Typical is this statement of
Dr. Bloom: "The rate of pregnancy in our New Orleans
methadone programs has been as high as 20 percent during the past
year. Female patients of childbearing age appear to be more
fertile once they are stabilized on methadone. They should be
informed of this, and where appropriate, be offered birth control
information Or measures." 8 Outcome of
pregnancy. During the first few years of methadone maintenance,
the question of possible damage to the fetus in pregnancy was
often raised. The question can now be answered decisively. The
rate of congenital malformations among babies bom to mothers
taking high doses of methadone both before and during pregnancy
does not differ significantly from the rate to be expected among
nonaddicted mothers of the same age, color, and socioeconomic
status.9 The course of
pregnancy among women on methadone is generally uneventful, with
few complications. Birth complications are also what might be
expected in a comparable nonaddicted group. Careful
evaluation of the babies at birth, performed at several centers,
reveals only two deviations from what would be expected. The Beth
Israel findings in 19 babies is typical of the findings
generally. First, while few
of the Beth Israel babies bom to mothers on methadone maintenance
were in fact premature-born too soon--one-third of them had the
low birth weight (under 2,500 grams) typical of premature babies.
This is, of course, a handicap. The proportion of lowbirth-weight
babies is about the same as among babies born to mothers on
heroin."' How much the heroin and methadone contribute to
the problem, however, remains in doubt. Low birth weight is also
a characteristic of babies born to mothers who smoke heavily-and
almost all of these mothers were heavy smokers. Low birth weight
is also frequent among the poor, the black, and those otherwise
socially handicapped; almost all of these mothers were in one or
more of these categories. The other
condition frequently found in babies born to mothers on methadone
was byperirritability-tbe pattern often mistakenly called
"withdrawal symptoms." In the Beth Israel series, 8 of
the 19 methadone babies were born completely free of such
symptoms and 6 more had symptoms too mild to require medication.
Five babies had moderate symptoms requiring medication. None had
severe symptoms." This was a better record than for Beth
Israel babies whose mothers were heroin addicts not on methadone.
As noted earlier, this hyperirritability may be related to low
birth weight--or to factors wholly unrelated to opiates. Development
following birth. Dr. Saul Blatman, the Beth Israel pediatrician
in charge of infant care for babies born to addicted mothers and
to mothers on methadone maintenance, presented at the Third
National Conference on Methadone Treatment the first follow-up
report on the postnatal development of methadone babies. The
report covered 14 children from four and a half to forty-two
months of age. Each child seen
by us has been found to be developing physically within normal
limits without exception. Psychometrics performed during these
visits using the Knobloch-Modified Gesell Test or the Bayley
Scales of Infant Development showed the following overall range:
A normal or average test for I I of the 14 babies; a below
average test, as far as development of intelligence is concerned,
in one baby; and a high normal or high average intelligence in
one baby. One normal baby, who is average in all other respects,
showed poor language development at ages 23 and 33 months.
Overall, the impression is that this group compares favorably
with other children of similar age.12 Male sexual
function. The evidence to date suggests (though it does not yet
prove) that methadone, like heroin, has a modestly depressant
effect on male sexual function in some cases. The evidence is
much more convincing that many males converted from street heroin
to methadone maintenance enjoy a significant improvement in
sexual function. The best data so
far were presented at the Third Natiprial-Conference on Methadone
Treatment by Dr. Paul Cushman, jr.,,of St. Luke's Hospital in New
York City, who studied thoroughly 20 male patients aged
twenty-four to fifty-two, maintained on methadone for from ten
months to five years. Only 7 of these 20 men reported that they
were consistently potent while on street heroin. After conversion
to methadone, in contrast, 16 of the 20 reported normal potency.
The number reporting normal libido rose from 7 on street heroin
to 17 on methadone maintenance. Delayed ejaculation was frequent
both while on heroin and after conversion to methadone
maintenance-though some patients reported normal ejaculation time
on heroin, some on methadone, and some on both. 13 The cause of
depressed sexual function was apparently not hormonal.
Testosteronc levels and luteinizing hormone (LH) levels were both
within normal limits in all 20 cases. 14 Dr. Cushman summed up: ... Some
patients on methadone had some sexual difficulties remaining
[but] 50 percent reverted [to normal] within the first month and
an additional 25 percent within the first year; another ten
percent within 18 months. Nevertheless, there were 10 percent
with continuing sexual problems apparently not present during
heroin use. In addition, there were another 10 percent who
experienced transient disturbance in sexual function during
initiation of methadone treatment not present during heroin
addiction.'-" The data here
reviewed clearly demonstrate that methadone is a drug poorly
suited to serve the purposes of a "genocide conspiracy"
against black heroin users. Conversion from street heroin to
methadone maintenance actually improves sexual function, both
male and female, in a large proportion of cases-and notably
increases the likelihood of normal pregnancy and normal birth. Pain and
methadone maintenance. Astonishing findings concerning pain were
reported at the Third National Conference on Methadone Treatment
by Dr. Morton 1. Davidson of Beth Israel Medical Center, findings
based on experience with several thousand methadone patients. These patients
are able to be managed in a relatively routine fashion.
Perception of pain has been no problem. There never has been a
problem of masking symptomatology. They have experienced dental
problems and perceive pain normally.... When it comes to
relieving pain, we have had experience with the use of
superimposed narcotics such as morphine or Demerol. These have
been successful. Patients have been relieved of their pain. The
explanation for this has not been worked out.... We have had
patients who have undergone surgery varying from abdominal to
orthopedic surgery to chest surgery. The patients have been
managed with no particular difficulty regarding
anesthesia."" Overdose. Like
aspirin and other drugs, methadone should not be left lying
around within reach of small children. The usual maintenance
dose, if taken by a child, may be fatal unless proper treatrnent
is instituted. A few cases have
been reported of children attracted to the "orange
juice" in the family refrigerator who have died of the
methadone it contained. Some methadone maintenance programs
therefore require that patients who take home methadone mixed
with a soft drink must carry and store it in a locked box. Dr.
Dole has developed, and a pharmaceutical company is marketing, a
methadone tablet that is not readily injectable, need not be
mixed with a soft drink, and need not be refrigerated. The new
tablets are now in use in many programs, and are expected to
reduce the risk of methadone overdose in children. Fortunately, the
antidote for methadone overdose is simple and readily available
in hospital emergency rooms-a series of injections of the same
narcotic antagonist, nalorphine (Nalline), used for treating
overdose of other opiates. Nalorphine produces almost immediate
relief. A few methadone overdose deaths have been reported,
however, in children given only one injection of nalorphine. The
antagonist works like magic-but its effect lasts only for a few
hours, while the methadone effect may persist for a day or more.
After the first nalorpbine dose wears off, the child may again
fall into a life-threatening methadone coma. Hence, the hospital
staff must keep the child under continuous observation, and
repeat the nalorphine injection whenever signs of lethargy occur. In 1970 and
1971, some deaths among addicts on methadone were attributed to
"methadone overdose." As in the case of so-called
"heroin overdose" deaths, however, these fatalities
followed moderate rather than excessive doses of the narcotic.
Hopefully, solution of the Syndrome X mystery will solve these
methadone "overdose" deaths too (see Chapter 12).