EFRACEA Modified-release hard capsule Ref.[27645] Active ingredients: Doxycycline

Efracea contains doxycycline in a formulation designed to yield anti-inflammatory plasma levels below the antimicrobial threshold. Efracea must not be used to treat infections caused by organisms susceptible (or suspected to be susceptible) to doxycycline.

Solid dosage forms of the tetracyclines may cause oesophageal irritation and ulceration. To avoid oesophageal irritation and ulceration, adequate fluids (water) should be taken with this medicinal product (see section 4.2). Efracea should be swallowed whilst in an upright sitting or standing posture.

Whilst no overgrowth by opportunistic microorganisms such as yeasts were noted during the clinical studies with Efracea, therapy with tetracyclines at higher doses may result in overgrowth of non-susceptible microorganisms including fungi. Although not observed in clinical trials with Efracea, the use of tetracyclines at higher doses may increase the incidence of vaginal candidiasis. Efracea should be used with caution in patients with a history of predisposition to candidiasis overgrowth. If superinfection is suspected, appropriate measures should be taken, including consideration of discontinuing Efracea.

Treatment with higher doses of tetracyclines is associated with emergence of resistant intestinal bacteria, such as enterococci and enterobacteria. Although not observed during clinical studies with low dose doxycycline (40 mg/day), the risk for development of resistance in the normal microflora cannot be excluded in patients treated with Efracea.

Doxycycline blood levels in patients treated with Efracea are lower than in those treated with conventional antimicrobial formulations of doxycycline. However, as there are no data to support safety in hepatic impairment at this lower dose, Efracea should be administered with caution to patients with hepatic impairment or to those receiving potentially hepatotoxic medicinal products. The antianabolic action of tetracyclines may cause an increase in BUN. Studies to date indicate that this does not occur with the use of doxycycline in patients with impaired renal function.

The bioavailability of doxycycline is reported to be reduced at high pH (also see section 4.5).

Caution should be observed in the treatment of patients with myasthenia gravis who may be at risk of worsening of the condition.

All patients receiving doxycycline, including Efracea, should be advised to avoid excessive sunlight or artificial ultraviolet light whilst receiving doxycycline and to discontinue therapy if phototoxicity (eg skin eruption etc) occurs. Use of sunscreen or sunblock should be considered. Treatment should cease at the first sign of photosensitivity.

In common with the use of antimicrobial medicinal products in general, there is a risk of the development of pseudomembranous colitis with doxycycline treatment. In the event of the development of diarrhoea during treatment with Efracea, the possibility of pseudomembranous colitis should be considered and appropriate therapy instituted. This may include the discontinuation of doxycycline and the institution of specific antibiotic therapy. Agents inhibiting peristalsis should not be employed in this situation.

Efracea should not be used in patients with ocular manifestations of rosacea (such as ocular rosacea and/or blepharitis/meibomianitis) as there are limited efficacy and safety data in this population. If these manifestations appear during the course of the treatment Efracea should be discontinued and the patient should be referred to an ophthalmologist.

In humans, the use of tetracyclines during tooth development may cause permanent discolouration of the teeth (yellow-grey-brown). This reaction is more common during long-term use of the medicinal product but has been observed following repeated short-term courses. Enamel hypoplasia has also been reported. As for other tetracyclines, doxycycline forms a stable calcium complex in any bone-forming tissue. A decrease in fibula growth has been observed in premature infants given oral tetracycline in doses of 25 mg/kg every 6 hours. This reaction was shown to be reversible when the medicinal product was discontinued.

In the event of a severe acute hypersensitivity reaction (eg anaphylaxis), treatment with Efracea must be stopped at once and the usual emergency measures taken (eg administration of antihistamines, corticosteroids, sympathomimetics and, if necessary, artificial respiration).

Some patients with spirochete infections may experience a Jarisch-Herxheimer reaction shortly after doxycycline treatment is started. Patients should be reassured that this is a usually self-limiting consequence of antibiotic treatment of spirochete infections.

Patients with rare hereditary problems of fructose intolerance, glucose-galactose malabsorption or sucrase-isomaltase insufficiency should not take this medicinal product.

Capsule printing ink contains Allura red AC aluminium lake (E129) which may cause allergic reactions.

The recommendations below regarding the potential interactions between doxycycline and other medicinal products are based upon experience with the larger doses generally used in antimicrobial formulations of doxycycline rather than with Efracea. However, at the present time, insufficient data exist for reassurance that the interactions described with higher doses of doxycycline will not occur with Efracea.

Interactions affecting doxycycline

The absorption of doxycycline from the gastro-intestinal tract may be inhibited by bi- or tri-valent ions such as aluminium, zinc, calcium (found for example in milk, dairy products and calcium-containing fruit juices), by magnesium (found for example in antacids) or by iron preparations, activated charcoal, cholestyramine, bismuth chelates and sucralfate. Therefore, such medicinal products or foodstuffs should be taken after a period of 2 to 3 hours following ingestion of doxycycline.

Medicinal products which increase gastric pH may reduce the absorption of doxycycline and should be taken at least 2 hours after doxycycline.

Quinapril may reduce the absorption of doxycycline due to the high magnesium content in quinapril tablets.

Rifampicin, barbiturates, carbamazepine, diphenylhydantoin, primidone, phenytoin and chronic alcohol abuse may accelerate the decomposition of doxycycline due to enzyme induction in the liver thereby decreasing its half-life. Sub-therapeutic doxycycline concentrations may result.

Concurrent use of cyclosporin has been reported to decrease the half-life of doxycycline.

Interactions affecting other medicinal products

Concomitant use not recommended

When doxycycline is administered shortly before, during or after courses of isotretinoin, there is the possibility of potentiation between the medicinal products to cause reversible pressure increase in the intracranial cavity (intracranial hypertension). Concomitant administration should therefore be avoided.

Bacteriostatic medicinal products including doxycycline may interfere with the bacteriocidal action of penicillin and beta-lactam antibiotics. It is advisable that doxycycline and beta-lactam antibiotics should not therefore be used in combination.

Other interactions

Tetracyclines and methoxyflurane used in combination have been reported to result in fatal renal toxicity.

Doxycycline has been shown to potentiate the hypoglycaemic effect of sulphonylurea oral antidiabetic agents. If administered in combination with these medicinal products, blood glucose levels should be monitored and, if necessary, the doses of the sulphonylureas should be reduced.

Doxycycline has been shown to depress plasma prothrombin activity thereby potentiating the effect of anticoagulants of the dicoumarol type. If administered in combination with these agents, coagulation parameters including INR should be monitored and, if necessary, the doses of the anticoagulant medicinal products reduced. The possibility of an increased risk of bleeding events should be borne in mind.

Pregnancy

Studies in animals have not demonstrated a teratogenic effect. In humans, the use of tetracyclines during a limited number of pregnancies has not revealed any specific malformation to date.

The administration of tetracyclines during the second and the third trimesters results in permanent discolouration of the deciduous teeth in the offspring. As a consequence, doxycycline is contraindicated during the second and third trimesters of pregnancy (see section 4.3).

Breastfeeding

Low levels of tetracyclines are secreted into the milk of lactating women. Doxycycline can be used by breast-feeding mothers for short term use only. Long term use of doxycycline may result in significant absorption by the suckling infant and is therefore not recommended because of a theoretical risk of dental discolouration and decreased bone growth of the suckling child.

Fertility

Oral administration of doxycycline to male and female Sprague-Dawley rats adversely affected fertility and reproductive performance (see section 5.3).

The effect of Efracea on human fertility is unknown.

Efracea has no or negligible influence on the ability to drive and use machines.

Summary of the safety profile

In the pivotal placebo-controlled studies with Efracea in rosacea, 269 patients were treated with Efracea 40 mg once daily and 268 patients were treated with placebo for 16 weeks. Gastrointestinal adverse reactions overall occurred in a higher proportion of patients on Efracea (13.4%) than on placebo (8.6%). The most commonly reported adverse reactions in patients treated with Efracea, ie those which occurred with ≥3% frequency on Efracea and with a frequency at least 1% higher than on placebo, were nasopharyngitis, diarrhoea and hypertension.

Tabulated list of adverse reactions

The table below lists adverse reactions on Efracea in the pivotal clinical trials, ie adverse reactions for which the frequency on Efracea was greater than the frequency on placebo (by ≥1%).

Adverse reactions reported for tetracycline antibiotics as a class are listed following the table. The adverse reactions are classified by System Organ Class and frequency, using the following convention: very common (≥1/10), common (≥1/100 to <1/10), uncommon (≥1/1,000 to <1/100), rare (≥1/10,000 to <1/1,000), very rare (<1/10,000), not known (cannot be estimated from the available data) and were reported with Efracea in clinical studies (see Table 1).

Table 1. Adverse reactionsa on Efracea in pivotal placebo-controlled studies in rosacea:

^a Defined as adverse events for which the frequency on Efracea was higher than on placebo (by at least 1%)

Benign intracranial hypertension and headache (unknown frequency: cannot be estimated from the available data) have been reported during EFRACEA postmarketing surveillance.

The following adverse reactions have been observed in patients receiving tetracyclines:

Infections and infestations

Very rare: Anogenital candidiasis

Blood and lymphatic system disorders

Rare: Thrombocytopenia, neutropenia, eosinophilia

Very rare: Haemolytic anaemia

Immune system disorders

Rare: Hypersensitivity reactions including anaphylaxis

There have also been reports of: Anaphylactoid purpura

Endocrine disorders

Very rare: Brown-black microscopic discolouration of thyroid tissue has been reported with long-term use of tetracyclines. Thyroid function is normal.

Nervous system disorders

Rare: Benign intracranial hypertension

Very rare: Bulging fontanelle in infants

Treatment should cease if evidence of raised intracranial pressure develops. These conditions disappeared rapidly when the drug was discontinued.

Cardiac disorders

Rare: Pericarditis

Gastrointestinal disorders

Rare: Nausea, vomiting, diarrhoea, anorexia

Very rare: Glossitis, dysphagia, enterocolitis. Oesophagitis and oesophageal ulceration have been reported most often in patients administered the hyclate salt in capsule form. Most of these patients took medication just prior to going to bed.

Hepatobiliary disorders

Rare: Hepatotoxicity

Skin and subcutaneous tissue disorders

Rare: Maculopapular and erythematous rashes, skin photosensitivity, urticaria

Very rare: Exfoliative dermatitis, angioneurotic oedema

Unknown: photo-onycholysis

Musculoskeletal and connective tissue disorders

Very rare: Exacerbation of systemic lupus erythematosus

Renal and urinary disorders

Rare: Increased blood urea.

Adverse reactions typical of the tetracycline class of medicinal products are less likely to occur during medication with Efracea, due to the reduced dosage and the relatively low plasma levels involved. However, the clinician should always be aware of the possibility of adverse events occurring and should monitor patients accordingly.

The following adverse reaction has been observed in patients receiving doxycycline:

Immune system disorders

Unknown frequency: Jarisch-Herxheimer reaction (see section 4.4)

Reporting of suspected adverse reactions

Reporting suspected adverse reactions after authorisation of the medicinal product is important. It allows continued monitoring of the benefit/risk balance of the medicinal product. Healthcare professionals are asked to report any suspected adverse reactions via Yellow Card Scheme Website: https://yellowcard.mhra.gov.uk/ or search for MHRA Yellow Card in the Google Play or Apple App Store.

Not applicable.