Salofalk 500mg Suppositories



Salofalk Suppositories 500mg.


Each suppository contains 500mg mesalazine For the full list of excipients, see section 6.1.



4.1    Therapeutic indications

Management of mild and moderate episodes of ulcerative colitis that is limited to the rectum.

4.2 Posology and method of administration


Adults and the Elderly: 1 to 2 suppositories, 2 to 3 times daily.

The dosage should be adjusted to suit the progress of the condition. Do not discontinue treatment suddenly.

Paediatric population: There is little experience and only limited documentation for an effect in children.

Method of administration:


4.3 Contraindications

Salofalk is contraindicated in cases of:

Severe impairment of renal or hepatic function.

Hypersensitivity to salicylates or any of the excipients

4.4 Special warnings and precautions for use

Blood tests (differential blood count; liver function parameters such as ALT or AST; serum creatinine) and urinary status (dip sticks) should be determined prior to and during treatment, at the discretion of the treating physician. As a guideline, follow-up tests are recommended 14 days after commencement of treatment, then a further two to three tests at intervals of 4 weeks.

If the findings are normal, follow-up tests should be carried out every three months. If additional symptoms occur, these tests should be performed immediately.

Caution is recommended in patients with impaired hepatic function.

Salofalk should not be used in patients with impaired renal function.

Mesalazine-induced renal toxicity should be considered if renal function deteriorates during treatment.

Patients with pulmonary disease, in particular asthma, should be very carefully monitored during a course of treatment with Salofalk.

Patients with a history of adverse drug reactions to preparations containing sulphasalazine should be kept under close medical surveillance on commencement of a course of treatment with Salofalk. Should Salofalk cause acute intolerance reactions such as abdominal cramps, acute abdominal pain, fever, severe headache and rash, therapy should be discontinued immediately.

4.5 Interaction with other medicinal products and other forms of interaction

Specific interaction studies have not been performed.

In patients who are concomitantly treated with azathioprine, 6-mercaptopurine or thioguanine, a possible increase in the myelosuppressive effects of azathioprine, 6-mercaptopurine or thioguanine should be taken into account.

There is weak evidence that mesalazine might decrease the anticoagulant effect of warfarin.

4.6 Fertility, pregnancy and lactation


There are no adequate data from the use of Salofalk suppositories in pregnant women. However, data on a limited number of exposed pregnancies indicate no adverse effect of mesalazine on the pregnancy or on the health of the foetus/newborn child. To date no other relevant epidemiologic data are available. In one single case after long-term use of a high dose mesalazine (2-4g, orally) during pregnancy, renal failure in a neonate was reported.

Animal studies on oral mesalazine do not indicate direct or indirect harmful effects with respect to pregnancy, embryonic/foetal development, parturition or postnatal development.


Salofalk suppositories should only be used during pregnancy if the potential benefit outweighs the possible risk.


N-acetyl-5-aminosalicylic acid and to a lesser degree mesalazine are excreted in breast milk. Only limited experience during lactation in women is available to date. Hypersensitivity reactions such as diarrhoea in the infant cannot be excluded. Therefore, Salofalk suppositories should only be used during breast-feeding if the potential benefit outweighs the possible risk. If the infant develops diarrhoea, breastfeeding should be discontinued.

4.7 Effects on ability to drive and use machines

Salofalk Suppositories 500mg have no or negligible influence on the ability to drive and use machines.

4.8 Undesirable effects

Organ Class System

Frequency According to MedDRA convention


(> 1/10,000; <1/1,000)

Very rare (< 1/ 10,000)

Blood and lymphatic system disorders

Altered blood counts (aplastic anaemia, agranulocytosis, pancytopenia, neutropenia, leukopenia, thrombocytopenia)

Nervous system disorders

Headache, dizziness

peripheral neuropathy

Cardiac disorders



Respiratory, thoracic and mediastinal disorders

Allergic and fibrotic lung reactions (including dyspnoea, cough, bronchospasm, alveolitis, pulmonary

eosinophilia, lung infiltration, pneumonitis)



Abdominal pain, diarrhoea, flatulence, nausea, vomiting,constipation

Acute pancreatitis

Renal and urinary disorders

Impairment of renal function including acute and chronic interstitial nephritis and renal insufficiency

Skin and subcutaneous tissue disorders


Musculoskeletal and connective tissue disorders

Myalgia, arthralgia

Immune system disorders

Hypersensitivity reactions such as allergic exanthema, drug fever, lupus erythematosus syndrome, pancolitis

Hepatobiliary disorders

Changes in liver function parameters (increase in transaminases and cholestasis parameters), hepatitis, cholestatic hepatitis

Reproductive system disorders

Oligospermia (reversible)

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 the Yellow Card Scheme website at:

4.9 Overdose

There are rare data on overdosage (e.g. intended suicide with high oral doses of mesalazine), which do not indicate renal or hepatic toxicity. There is no specific antidote and treatment is symptomatic and supportive.

5.1 Pharmacodynamic properties

Pharmacotherapeutic group: Aminosalicylic acid and similar agents ATC code: A07EC02

The mechanism of the anti-inflammatory action is unknown. The results of in vitro studies indicate that inhibition of lipoxygenase may play a role.

Effects on prostaglandin concentrations in the intestinal mucosa have also been demonstrated. Mesalazine (5-Aminosalicylic acid / 5-ASA) may also function as a radical scavenger of reactive oxygen compounds.

On reaching the intestinal lumen, rectally administered mesalazine has largely local effects on the intestinal mucosa and submucosal tissue.

5.2 Pharmacokinetic properties

General considerations of mesalazine:


Mesalazine absorption is highest in proximal gut regions and lowest in distal gut areas.


Mesalazine is metabolised both pre-systemically by the intestinal mucosa and in the liver to the pharmacologically inactive N-acetyl-5-aminosalicylic acid (N-Ac-5-ASA). The acetylation seems to be independent of the acetylator phenotype of the patient. Some acetylation also occurs through the action of colonic bacteria. Protein binding of mesalazine and N-Ac-5-ASA is 43% and 78%, respectively.


Mesalazine and its metabolite N-Ac-5-ASA are eliminated via the faeces (major part), renally (varies between 20 and 50 %, dependent on kind of application, pharmaceutical preparation and route of mesalazine release, respectively), and biliary (minor part). Renal excretion predominantly occurs as N-Ac-5-ASA. About 1 % of total orally administered mesalazine dose is excreted into the breast milk mainly as N-Ac-5-ASA.

5.3 Preclinical safety data

With the exception of a local tolerance study in dogs, which demonstrated good rectal tolerance, no preclinical studies have been performed with Salofalk Suppositories.

Preclinical data on mesalazine reveal no special hazard for humans based on conventional studies of safety pharmacology, genotoxicity, carcinogenicity (rat) or toxicity to reproduction.

Kidney toxicity (renal papillary necrosis and epithelial damage in the proximal convoluted tubule or the whole nephron) has been seen in repeat-dose toxicity studies with high oral doses of mesalazine. The clinical relevance of this finding is unknown.


6.1.    List of Excipients

Salofalk Suppositories 500mg contain the following excipients:

Hard Fat Docusate sodium Cetyl alcohol

6.2.    Incompatibilities

None known.

6.3.    Shelf Life

36 months.

6.4    Special precautions for storage

Do not store above 30°C. Store in the original container in order to protect contents from light.

6.5.    Nature and Contents of Container

Cartons of ten or thirty suppositories in white, opaque PVC/PE moulded strips.

Each strip contains five suppositories.

6.6.    Instruction for Use/Handling



Dr Falk Pharma UK Ltd, Unit k, Bourne End Business Park Cores End Road, Bourne End, SL8 5AS, United Kingdom


PL 10341/0009


31st December 2004