Aminosalicylates

You may experience the following side effects while on Aminosalicylates. Tell your doctor if you encounter any of them so that adjustments to your therapy may be made to reduce the occurrence of these side effects where possible. These include:

​	​Sulfasalazine	​Mesalazine (Oral)
​Common	​Nausea and vomiting Headache and dizziness Abdominal pain and indigestion Diarrhea Orange/ yellow discoloration of urine or perspiration from skin. Extended wear soft contact lens may be permanently stained yellow Metallic taste in mouth Mild rash and itchiness Drug fever- due to sulfa component	​Nausea and vomiting Headache and dizziness Abdominal pain and indigestion Diarrhea Mild rash and itchiness
Less common/ rare	​ Decrease in sperm production (reversible once stopped) Yellowing of skin, eye Pins and needles in hands and feet Bone marrow suppression - manifested as sore throat, mouth ulcers, unexplained bruising/bleeding, unusual tiredness, prolonged infection or fever Ringing in ears Increased sensitivity to sun - apply sunscreen Reversible lung inflammation manifested as breathlessness Depression Kidney pain/ inflammation Pancreatitis manifested as severe abdominal pain	​ Yellowing of skin, eye Bone marrow suppression - manifested as sore throat, mouth ulcers, unexplained bruising/bleeding, unusual tiredness, prolonged infection or fever Kidney pain/ inflammation Pancreatitis manifested as severe abdominal pain

 

If you experience any severe signs of illness, or side effects such as unexplained bruising, bleeding (nosebleeds), sore throat, fever or malaise, severe abdominal pain, or a blistering skin rash contact your doctor immediately.

Oral 5-ASAs are usually taken twice or three times daily. Your doctor may start with a lower dose to minimize the side effects and increase the dose slowly over time.

Rectal 5-ASAs are usually given once at night, up to two times a day for severe condition.

Higher doses are usually given for acute attacks and lower doses are used to maintain remission.

Improvement in symptoms occur gradually, takes about 6-12 weeks to see effect.

 

How should it be taken?

​Drugs​	​​Route​	​​Administration​	Timing with regard to food
​Salofalk ® (Mesalazine) Rectal Foam	​Rectal	Refer to Mesalazine Rectal Foam PIL
Pentasa ® (Mesalazine PR) tablet	​Oral	​Swallow whole; if unable to swallow, tablets can be dissolved in about 50mL of water. Do not crush/chew the small granules	​Take with or without food
​Salofalk ® (Mesalazine EC) tablet	​Oral	​Cannot be crush/ chew/ cut. Swallow whole. (Due to pH-dependent release nature of drug). Take with plenty of fluid.	​Take 30-60 min before food.
​Sulfasalazine EC tablet	​Oral	​Recommended to swallow whole to prevent gastric side effects. If unable to swallow, tablet can be crushed/cut. Take with plenty of fluid.	​Take with or after food to minimize side effects

 

If you forget a dose, take it as soon as you remember. If it is nearer to the time of your next dose, skip the missed dose. Do not take two doses at the same.

;#Keep away from children;#Keep in a cool, dry place, away from direct sunlight;#Store at room temperature;# Store in cool, dry place away from direct heat and light. Do not refrigerate.

Aminosalicylates

• If you are allergic to salicylic acid/ salicylates such as aspirin, please inform your doctor before taking this medication.

Sulfasalazine

• If you are allergic to sulfa drugs (e.g. co-trimoxazole), or if you have ever developed any rash, hives, swelling or shortness of breath after taking a sulfa drug, please inform your doctor before taking this medication.
• Please inform your doctor/pharmacist if you have G6PD deficiency or if you are pregnant/breastfeeding.
• May reduce body’s ability to absorb folate, hence, your doctor may prescribe folic acid supplement together when needed.

As aminosalicylates may interact with some medications, please consult your pharmacist or doctor if you are taking or before taking any other medications. E.g. antacids, warfarin, digoxin.