AUTH/2244/6/09 - General Practitioner and Pharmacist v Stiefel

Promotion of Duac

  • Received
    17 June 2009
  • Case number
    AUTH/2244/6/09
  • Applicable Code year
    2008
  • Completed
    17 September 2009
  • Breach Clause(s)
    3.2, 7.2 (x3), 7.4, 7.10, 9.1, 9.10 and 12.1
  • Sanctions applied
    Undertaking received
  • Additional sanctions
  • Appeal
    Appeal by complainents
  • Review
    November 2009

Case Summary

A general practitioner and a pharmacist jointly complained about the promotion of Duac Once Daily Gel (clindamycin 1% and benzoyl peroxide 5%) by Stiefel. The materials at issue were a GP leavepiece; a pharmacist leavepiece; two journal advertisements; two abbreviated advertisements and a GP Review, January 2008, Management of mild and moderate acne vulgaris. Duac was indicated for the treatment of mild to moderate acne vulgaris, particularly inflammatory lesions.

The detailed response from Stiefel is given below.

One of the complainants telephoned Stiefel's medical information department on 29 May to ask for copies of references cited in the Duac promotional materials: The company was not cooperative: The medical information person could not give an assurance that she could provide the cited data-on-file as it might not be available. After much insistence and reference to the Code, the complainant was finally assured that the request would be treated as urgent. Over two weeks later the information had not been received.

The Panel noted that there was disagreement as to what had been requested. It was impossible to know what exactly transpired between the parties. Nonetheless two cited references had been posted one week after the initial request for papers. Unfortunately the house number recorded on the telephone enquiry report was wrong by one digit and thus the package was returned to Stiefel marked 'addressee unknown'. It was unfortunate that the wrong address had been recorded however, in the Panel's view, such an error did not constitute a breach of the Code. References had been posted in a timely manner and so no breach of the Code was ruled. This was upheld by the Appeal Board following an appeal by the complainants.

The complainants alleged that the GP leavepiece was inconsistent with the indication of Duac Once Daily Gel, in that it depicted an acne grading chart which featured not only inflammatory lesions but also, non-inflammatory and nodulocystic lesions. That the chart featured severe lesions misleadingly implied that Duac could be used for other than mild to moderate acne.

The Panel considered that Duac an acne grading chart showing all the grades of acne was useful so that a prescriber could tell when the condition was too severe to be treated with Duac. Nonetheless, if all grades of acne were to be shown, prescribers must be very clearly informed of when to use Duac; in that regard the Panel considered that a doubleheaded arrow spanning the pictures of mild to moderate acne and the statement in the prescribing information that Duac was for mild to moderate acne were insufficient. Some readers might assume that Duac could be used for severe acne. The Panel considered that the leavepiece was inconsistent with the particulars listed in the Duac summary of product characteristics (SPC). A breach of the Code was ruled. The Panel further considered that the leavepiece was misleading about the product's licensed indication and in that regard did not encourage the rational use of Duac. Breaches of the Code were ruled.

The complainants alleged that the claim in the leavepieces, referenced to Langner et al (2007), that 'Duac Once Daily Gel works fast' was misleading, exaggerated, could not be substantiated and was inconsistent with the SPC. The SPC stated that patients should be advised that in some cases 4-6 weeks of treatment might be required before the full therapeutic effect was observed. Langner et al (2007) did not substantiate the claim.

The Panel noted that Langner et al (2007) was a comparison of Duac and Zineryt in the treatment of mild to moderate facial acne. The claim at issue, however, was not comparative and did not compare Duac's efficacy or time to onset of action with that of Zineryt. Langner et al (2007) showed that from week 0 to week 1, the total number of non-inflammatory lesions in patients treated with Duac (n=73) fell from a mean of 53.4 to 41.8, similarly the mean total number of inflammatory lesions fell from 34.3 to 27.9 and the mean total number of lesions fell from 87.7 to 69.7. Over 20% of patients treated with Duac showed at least a 30% reduction in total lesion counts at week 1 and over 60% showed at least a 30% reduction in total lesion counts at week 2. The Panel considered that the claim 'Duac Once Daily Gel works fast' was not misleading or exaggerated as alleged. No breach of the Code was ruled. The claim had been substantiated and so no breach of the Code was ruled. The Panel did not consider that the claim was inconsistent with the SPC as alleged. No breach of the Code was ruled.

Upon appeal by the complainants the Appeal Board noted that the audience (GPs and pharmacists) would be familiar with the treatment of acne, and would consider that a topical treatment which showed results after one to two weeks would be considered as acting 'fast'. The Appeal Board noted that Luckey et al (2007) concluded that an acne treatment acted fast because a significant effect was observed at week 4. Teenagers would want to know that they could expect to see a positiveresponse to therapy after a week or so. In this regard the Appeal Board noted that it would take much longer before oral therapies were seen to have an effect. The Appeal Board did not consider that health professionals would be misled as to assume that the claim implied that the full therapeutic effect of Duac would be achieved 'fast'.

The Appeal Board considered that the claim 'Duac Once Daily Gel works fast' was not misleading or exaggerated as alleged, it had been substantiated and was not inconsistent with the SPC as alleged. The Appeal Board upheld all of the Panel's rulings of no breach of the Code.

The claim that Duac was 'cosmetically acceptable' appeared in the leavepieces and was referenced to data on file (2001). The complainants alleged that the data on file was not in the public domain and had not been provided on request. It was not up-todate and one could reasonably surmise that it was unlikely to substantiate the claims of cosmetic acceptability for the modern teenagers depicted in the leaflets. It was also very likely that today's teenagers had a very different perspective compared with the prevalent view in 2001. The claim of cosmetic acceptability focused entirely on the teenagers' need to look good and not silly. However, the latter ignored the occurrence of important side-effects which also needed to be balanced whilst pursuing aesthetics. The emphasis on cosmetic acceptability, particularly with regard to the face as opposed to other equally important parts of the body was not only inconsistent with the SPC but also tantamount to suggesting that Duac was used as a cosmetic.

The Panel noted that the data on file compared the consumer acceptability of Clindoxyl Gel [similar to Duac] and Benzamycin gel on the basis of immediate perception of aesthetic attributes and after one week's use. Patients (n=51) were asked to rate smell, colour and feel on the skin in terms of greasiness, granularity, spreadability, and whether a residue/film was left; they were also asked if they had experienced stinging and to rate the ease of applying make-up after applying the product to their skin. Subjects preferred Clindoxyl Gel over Benzamycin on virtually each attribute and on an overall basis.

The Panel noted that the complainants had not seen the data on file and had complained that, inter alia, results from 2001 would not be relevant to teenagers in 2009. No rationale was provided for this argument. The Panel did not consider that the claim was misleading in that regard and no breach of the Code was ruled. The Panel considered that on the basis of the results of the consumer acceptability study, it was not unreasonable to claim that Duac Once Daily Gel was cosmetically acceptable. The claim was not misleading and had been substantiated. No breaches of the Code were ruled. The Panel did not consider that the claim was tantamount to suggesting that the product was a cosmetic. In that regard the claimencouraged the rational use of the medicine. No breach of the Code was ruled.

The complainants noted that the GP leavepiece claimed that Duac Gel got on with teenagers. This claim of efficacy appeared to be unsubstantiated. Langer et al (2007) did not substantiate the claim as the mean age was 21.2 years in the Duac arm of the study.

The Panel noted that in Langner et al (2007) patients in the Duac group were aged 12-38, mean age of 21.2 years. There was no data before the Panel which suggested that efficacy differed according to the age of the patient.

In the GP leavepiece the headline 'Duac Once Daily Gel gets on with teenagers' was followed by a number of claims regarding the ease of use/acceptability of Duac eg once daily application, odour free etc. The Panel further noted, from above, that the majority of patients had at least a 30% decrease in total lesion count at two weeks. In the Panel's view this onset of action time would encourage compliance in a group where compliance was likely to be difficult. On balance the Panel considered that the claim 'Duac Once Daily Gel gets on with teenagers' had been substantiated. No breach of the Code was ruled.

The claim 'Teenagers are “busy” Duac is a once daily gel' appeared in both leavepieces. One advertisement stated 'Once a day is good, because they're, like, so busy'. The advertisement and the pharmacist leavepiece also featured the claim 'can be worn under make-up'. The complainants alleged that the issue of convenience was overstated given that the SPC clearly stated that the gel should be applied once daily in the evening to affected areas after the skin had been thoroughly washed, rinsed with warm water and gently patted dry. The complainants were not sure that this strict regimen was consistent with the ease of use implied by the unqualified once daily application claim in support of the use of Duac for teenagers who were impatient and busy. The claim that Duac could be used under make-up might be of relevant to young teenagers, however in the early phase of treating moderate acne it was generally accepted that cosmetics should be avoided in order to detect side effects and particular cosmetic products should be avoided all together. The focus on an early response aligned with less than helpful and unqualified generalisations regarding the use of cosmetics was misleading.

The Panel noted that Duac should be applied once daily in the evening, to affected areas after the skin had been thoroughly washed, rinsed with warm water and gently patted dry. The Panel did not consider that this was a strict regime as alleged or that it imposed restrictions on 'busy' teenagers. No breach of the Code was ruled.

With regard to wearing make-up, the Panel noted that the Duac SPC stated that cosmetics that had astrong drying effect, and products with high concentrations of alcohol and/or astringents, should be used with caution as a cumulative, irritant effect might occur. There was no clinical data before the Panel to support the concomitant use of make-up. The Panel considered that the claim 'can be worn under make-up' did not reflect the evidence and was misleading in that regard. A breach of the Code was ruled.

The complainants alleged that the claim 'No need to keep it in the fridge' in the GP leavepiece was incomplete and therefore misleading. The storage of conditions prior to dispensing [store in a refrigerator at 2-8oC] were important and had been omitted; this information was relevant to both pharmacists and dispensing GPs.

The Panel noted that the leavepiece at issue was specifically for non-dispensing prescribers. The claim 'No need to keep it in the fridge' appeared as the fourth bullet point on a page headed 'Duac Once Daily Gel gets on with teenagers'. In the context in which it appeared the Panel considered that the claim was about the patient's use of Duac, not the dispenser's storage of the product and so no breach of the Code was ruled.

The complainants alleged that the claim in the advertisement that 'Duac … starts working within a week' was misleading and unsubstantiated. Langner et al (2008) cited in support was a small, single-blind study which did not represent the balance of evidence in respect of the speed of onset of action of Duac. Specifically the comparison was with Differin Gel and in that regard the claim should be qualified as it might not be relevant with other topical treatments.

The Panel considered data to substantiate the claim that Duac 'starts working within a week' would have to show that the product was effective in less than seven days. The Panel had no such data before it. Both Langner et al (2007) and (2008) reported efficacy at week one but not before then. The Panel thus considered that the claim was misleading and had not been substantiated; breaches of the Code were ruled. The Panel considered that the claim was about Duac alone; it was not a comparison with Differin Gel or any other product. In that regard the Panel did not consider that the claim was a misleading comparison as alleged and no breach of the Code was ruled.

The complainants alleged that the advertisement also appeared to imply that the speed of onset of action and effectiveness of Duac improved teenagers' confidence with particular reference to facial acne rather than lesions on other parts of the body to such an extent that patients could stop hiding under their hoodies within one week. The latter was clearly a generalisation and inconsistent with the SPC which did not indicate that Duac was specifically effective in the management of facial acne over and above lesions on other parts of the body. The promotion of this aspect of the benefitsof Duac was exaggerated and distorted the premise for rational prescribing.

The Panel did not consider that the advertisements implied that Duac was particularly effective for facial acne as opposed to acne on any other part of the body. In the Panel's view the advertisements depicted a typical acne patient. The Panel did not consider that the advertisements inappropriately exaggerated or distorted the premise of rational prescribing as alleged. No breach of the Code was ruled.

The Acne Working Group GP Review January 2008 was cited in support of general claims about acne in the pharmacist leavepiece. The complainants stated that it was evident that the Acne Working Group was convened at the behest of Stiefel which was close to the discussions and in control of the outputs. The cover of the article looked like the independent parent journal, GP, and this in conjunction with the statement that the review was provided as a service to medicine by Stiefel misled because it implied that it was not promotional. Promotional claims for Duac were principally about the importance of benzoyl peroxide and the issue of antibiotic resistance and this was reflected often in review. The review was disguised promotion. Indeed the mention of Duac and certain of its benefits appeared in a discussion of benzoyl peroxide combination therapies and selectively in the conclusion. Prescribing information should have been provided. A cost comparison of topical treatments, including Duac, appeared simply to be based on medicine acquisition cost and did not allow for varying treatment durations, indications, pack sizes and importantly, cost efficacy. This was misleading and unbalanced. The complainants alleged that reprints of the review had been used promotionally.

The Panel noted that the supplement in question had been sponsored and facilitated by Stiefel. An agency working on behalf of the company had identified experts to be part of the Acne Working Group. Invitations sent by Stiefel stated that Stiefel would like the group to develop rigorous and robust guidance, including a treatment algorithm, to help inform clinicians on the management of mild and moderate facial acne and the relative position of topical combinations vs oral antibiotics and retinoids. Stiefel had thus, at the outset, defined the scope of the Acne Working Group. The chair had been briefed by a senior brand manager. At the groups first meeting Stiefel had given a short presentation on the role for topical combination treatments and provided factual information on its products. Stiefel had reviewed the supplement before it was released and had subsequently given its representatives copies to give to GPs and had referred to the guidance in its promotional material for Duac.

The Panel considered that Stiefel was wholly responsible for the Acne Working Group and thus for any output from it. The group was formed atStiefel's behest and the company had defined the scope of its work in the invitation it had issued and had briefed the chairman. There was no strictly arm's length arrangement.

The Panel considered that the material at issue was not a supplement 'Provided as a service to medicine by Stiefel' as stated on the front cover, but a paid for insert reporting the outcome of a group which had been charged, inter alia, with informing clinicians about the relative position of topical combination products in the treatment of mild to moderate facial acne. The group concluded that combination therapies involving benzoyl peroxide might assist in patient concordance and the minimization of antibiotic resistance. The Panel did not consider that the statement 'Provided as a service to medicine by Stiefel' accurately reflected the nature of the company's involvement. A breach of the Code was ruled. It was not stated that the Acne Working Group had been formed by Stiefel. The Panel considered that the material was disguised promotion as alleged. A breach of the Code was ruled.

The Panel noted that the supplement contained a table of data headed 'Cost comparison for acne treatments'. Readers were directed to a footnote which stated that costs had been taken from MIMS January 2008. In that regard the Panel considered that the table listed acquisition costs only; there was no implication that the table detailed cost efficacy of the medicines. The Panel did not consider that the table was unbalanced or misleading as alleged. No breach of the Code was ruled.

 The Panel considered that presenting the output of the Acne Working Group as an independent supplement to a journal demonstrated apparent poor knowledge of the requirements of the Code. Health professionals generally looked to medical journals as a source of independent information; where authors wrote on behalf of companies or as a result of the activities of pharmaceutical companies this must be made clear. In the Panel's view the majority of readers would have viewed the material at issue quite differently if they had known the relationship between the Acne Working Group and Stiefel. High standards had not been maintained. A breach of the Code was ruled.