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Mood stabilizers: 8 things you should know about drugs for bipolar disorder

Updated on February 24, 2013
© Leloft1911 | Stock Free Images & Dreamstime Stock Photos
© Leloft1911 | Stock Free Images & Dreamstime Stock Photos


“Mood-stabilizers” is a collective term for a group of drugs used in psychiatry to counteract mood-swings. Patients who experience alternating episodes of extreme elation and deep depression were originally said to be suffering from manic-depression, a relatively rare disorder afflicting about 10 people per million per year (1). Over the last 20 years or so people with abnormal variations in mood have typically been given the diagnosis of bipolar disorder, a term that incorporates a wider range of presentations. Indeed, the concept has recently been further broadened, some psychiatric researchers suggesting that up to 20% of the general population may display a “bipolar spectrum disorder.” (2)

As more and more people have become labelled as having pathological mood swings, the pharmaceutical industry has responded by marketing a range of medications claiming to rectify the disorder. As often happens in psychiatry, the commercial hype can triumph over the scientific evidence leading to overly ambitious claims for the efficacy of their products.

What follows are eight key pieces of information about mood-stabilizers that should be known by anyone considering the appropriateness of taking this group of drugs.

1. Mood-stabilizers comprise an assortment of different chemicals

Reflecting the lack of any known biochemical basis for mood disorders, the drugs advocated for the treatment for these types of emotional problems comprise a heterogeneous range of chemicals.

The hotchpotch of common medications prescribed for mood disorders are listed in Table 1, along with the drug-type from which each derives.

Lithium was the first mood-stabilizer and is currently the most widely used. Consequently, most of the subsequent points are in reference to this drug.

Brand names
Drug type
Priadel, Camcolit, Liskonum
Alkaline metal
Sodium valporate
Epilim, Depakote,Episenta
Anti-epilepsy drug
Tegretol, Carbagen
Anti-epilepsy drug
Anti-epilepsy drug
Anti-psychotic drug
Anti-psychotic drug
Anti-psychotic drug
Table 1: Medications for mood disorders

2. Mood stabilisers do not normalise emotional responses

Contrary to psychiatric folk-lore, mood-stabilizers do not do what their name suggests; they do not normalise emotional responses. The mood-stabilizers do not act as an elegant buffer, keeping mood within standard parameters.

Research involving healthy volunteers taking lithium revealed that this most common of mood stabilizers did not reduce normal fluctuations in mood (3)(4).

© Sabel8575 | Stock Free Images & Dreamstime Stock Photos
© Sabel8575 | Stock Free Images & Dreamstime Stock Photos

3. Mood stabilizers are sedatives

All mood stabilisers (irrespective of whether their original category was alkaline metal, ant-epileptic or anti-psychotic) have a sedative effect, generally suppressing emotional reactions. In the context of manic-depression or bipolar disorder, the only established benefit of mood stabilisers is that they suppress mania. Given the hugely damaging consequences of a manic episode on a person’s life, preventing mania is often a highly desirable outcome. Nevertheless, the term “mood dampeners” more accurately describes the effect of this group of commonly used drugs.

The sedative effect of mood-stabilisers is most starkly illustrated when healthy volunteers ingest lithium (5)(6). Three weeks after starting the drug these volunteers show a decreased ability to learn new information, slower reaction times, reduced spontaneity and worsening memory.

4. Lithium was once used to treat gout

Lithium has been around for a long time. Throughout the 19th century, many years before it was promoted for use with manic-depression, lithium was believed to be an effective treatment of gout (a painful disorder involving inflammation of the joints) and kidney stones. Although ultimately found to be ineffective for these ailments, this early application meant that plentiful supplies of lithium were available in pharmacies in the mid 20th century when its utility in managing mood disorders was first explored.

5. The positive outcomes of the first trial of lithium were exaggerated

Positively distorting the findings of psychiatric drug trials is not a new phenomenon. In the 1940s, an Australian psychiatrist named John Cade began to experiment with the effects of lithium on patients with mental disorders. After observing the sedative effects lithium achieved with rats, he subsequently explored the outcomes for people experiencing mania and psychoses. In 1949 he reported extremely positive results for this group of psychiatric patients.

The availability of plentiful supplies of lithium within pharmacies across the western world, combined with the promotion of Cade’s astounding results, led to an exponential growth of lithium prescribing for the treatment of mania and other forms of psychotic agitation. Subsequently, however, it was discovered that Cade had “sexed-up” the results of his drug trial and had under-reported the toxic effects of lithium (1).

6. Mood stabilizers can cause a wide range of side effects

Lithium is a toxic metal. Consequently, when it is prescribed for the treatment of bipolar disorder it is imperative that the patient provides regular blood samples to ensure that the level in the body is maintained within a therapeutic range. Should the lithium concentration exceed the upper limit of this range, severe damage can be caused to the nervous system, gut and kidney.

The side-effects of lithium and the other mood stabilisers are given in the Table 2.

Common side-effects
Rare side effects
Hand tremor, reduced reaction times, excessive thirst, frequent urination, reduced creativity, underactive thyroid gland, weight gain
Kidney damage,
Nausea, lethargy, sedation, weight gain, polycystic ovaries, hair loss,
Liver failure, blood disorders, foetal abnormalities (if taken early in pregnancy)
Loss of balance, nausea, sedation, rash, double vision
Blood disorders, liver failure
Lack of coordination, double vision, rash, vomiting
Blood disorders, liver failure
Over-sedation, weight gain, sexual problems, raised cholesterol,
Table 2: Side-effects of mood stabilizers

7. Lithium is no better than other sedatives in controlling mania

Contrary to popular opinion, lithium does not appear to have any specific advantage over other sedative drugs in controlling mania.

Three studies have compared lithium with the anti-psychotic drug chlorpromazine for patients with acute mania. In two of them chlorpromazine was superior (7)(8). Such findings are consistent with the premise that any benefits from taking lithium are not due to the medication rectifying a chemical imbalance in the brain responsible for mood swings, but due to a general tranquillising effect.

8. Stopping lithium can cause manic relapse

Within the psychiatric system, the most common reason for prescribing lithium is for the long-term treatment of manic depression. Many patients who have in the past suffered episodes of mania, alternating with periods of severe depression, take lithium over many years to prevent further manic experiences.

A number of drug-trials have suggested that lithium is superior to other medications in preventing manic-depressive relapse (1). Unfortunately, these studies do not take into account the effects of abruptly stopping lithium after taking it for a long time. Typically, these studies recruit a large number of patients who have suffered with manic-depression but who are now stable. Many of these patients will have been taking lithium (or another mood stabilizer) for many months, or even years. These patients are then randomly divided into two groups, A and B. Participants in Group A continue to take lithium, while those in Group B are switched to a placebo pill (that is a pill without any active chemical). So in effect many of patients in Group B will have had their lithium stopped abruptly. All patients are then followed up over the next six months to determine how many relapse. The typical finding of these studies is that more patients in Group B will have a manic relapse than do so in Group A.

Psychiatrists and the pharmaceutical industry usually interpret these results as supporting the premise that lithium is an effective long term treatment for preventing manic-depressive relapse. A radically different, but equally logical, explanation of these research findings is that those patients in Group B who have a further episode of mania do so due to withdrawal effects from abruptly discontinuing the lithium.

Further evidence suggests that the risk of having a manic relapse after stopping long-term lithium treatment is even higher than it is prior to starting on lithium (9).


(1) Moncrieff, J. (2009). A Straight Talking Introduction to Psychiatric Drugs (Eds. R. Bentall & P. Sanders). PCCS Books, Ross-on-Wye.

(2) Angst, J. et al. (2003). Toward a redefinition of sub-threshold bipolarity. Journal of Affective Disorders 73 (1-2), 133-146.

(3) Barton, C.D. et al. (1993). Mood variability in normal subjects on lithium. Biological Psychiatry 34 (12), 878-884.

(4) Calil, H.M. et al. (1990). The effects of lithium carbonate on healthy volunteers: Mood stabilization? Biological Psychiatry 27(7), 711-722.

(5) Judd, L.L. et al. (1977). The effects of lithium carbonate on the cognitive functions of normal subjects. Archive of General Psychiatry 34(3), 355-357.

(6) Muller-Oerlinghausen et al. (1979). Effects of lithium on vigilance, psychomotoric performance and mood. Pharmakopsychiatric Neuropsychopharmakol. 12(5), 388-396.

(7) Prien, R.F. et al. (1972). Comparison of lithium carbonate and chlorpromazine in the treatment of mania. Archives of General Psychiatry 26(2), 146 – 153.

(8) Braden, W. et al. (1982). Lithium and chlorpromazine in psychotic inpatients. Psychiatry Research 7(1), 69 – 81.

(9) Suppes, T. et al. (1991). Risk of recurrence following discontinuation of lithium treatment in bipolar disorder. Archives of General Psychiatry 48(12), 1082 – 1088.


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    • lambservant profile image

      Lori Colbo 

      2 years ago from Pacific Northwest

      Got it and I thank you for the clarification. I am blessed to have had good prescribing clinicians who inform me well, but I always ask a lot of questions. They've always been helpful, even when I've brought information such as I found in your article here. They are patient with my requests not to tweak or make a bunch of changes to my meds every time I have a symptom, but recently my very sweet and experienced prescriber suggested I start complying if I want to get over the multiple symptoms I've been having the last year and a half. My pride is bigger than it should be. Thanks for your information.

    • gsidley profile imageAUTHOR

      Dr. Gary L. Sidley 

      2 years ago from Lancashire, England

      lambservant - Thank you for taking the time to read and comment.

      The hub was explicitly about what 'you should know' about so-called mood stabilisers, rather than it being an overview of the (often severe) problem of mood swings. It seems to me that helpful approaches to mood swings would make another interesting hub.

      And just to be clear, I'm not against the use of psychotropic drugs so long as the individual is given sufficient information to make an informed choice. What I am against is the often inflated, misleading claims made by the psychiatric profession and the pharmaceutical industry.

    • lambservant profile image

      Lori Colbo 

      2 years ago from Pacific Northwest

      This information is all well and good, but you gave no other effective options. I agree with some of what you said but someone feeling desperate needs and alternative if you're going to say these drugs are bad and ineffective.

      You didn't bring up the use of anti depressants for BPD. They say they are bad for this disorder in most cases because it puts someone in a mania. I've not had that experience but it's done absolutely nothing.

      Thanks for sharing.

    • gsidley profile imageAUTHOR

      Dr. Gary L. Sidley 

      6 years ago from Lancashire, England

      Thanks for your time and interest, Sarita.

    • profile image


      6 years ago

      I've found that some of my anti-psychotic meds have actually helped with my depression as well. Lamictal is well known for this effect, but I've also found it with chlorpromazine (Thorazine), and Latuda (a new atypical).

      Interesting article...

    • gsidley profile imageAUTHOR

      Dr. Gary L. Sidley 

      6 years ago from Lancashire, England

      Thank you very much for your generous comments, meloncauli.

      Arousal reduction via benzodiazepines would be what I would opt for. I think sedation that doesn't induce sleep can be appropriate and helpful in some circumstances, but I believe the principle has to be brief periods of use rather than this idea (unsupported by the literature) that lithium and anti-psychotics should be used long term as a prophylactic.

      Best wishes

    • meloncauli profile image


      6 years ago from UK

      Brilliant article gsidley! It is so important to bring awareness to people about the drugs they are taking. All this is so similar with regards most of the drugs used in psychiatric treatment. Most have a tranquillizing or sedatory effect to some degree. It make you wonder if simply giving benzodiazepines might suffice in so many cases!

      I saw that you talk of chlorpromazine which I was given strangely enough for depression many years ago, alongside anti depressants. The anti depressants weren't working, but my goodness, a dose of chlorpromazine rendered me pretty useless. I could hardly string two sentences together whilst I was on that! It's a sure darned easy way to squash someone quickly. If you can't think, you can't act!

      Someone I know is just coming off lithium after many years of taking it. She suffers with rapid cycling bipolar disorder. A new doctor she saw just pointed out that it doesn't work for rapid cycling bipolar! She is very angry. She has also developed some physical problems that could be put down to the lithium.

      I digress! Great article. Voted up and shared.


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