Lemsip Side Effects

Common Lemsip Side Effects

The most commonly reported Lemsip side effects (click to view or check a box to report):

Overdose (2)
Vomiting (2)
Hepatic Failure (1)
Hallucination (1)
Oesophagitis (1)
Pharyngitis Streptococcal (1)
Haematemesis (1)
Memory Impairment (1)
Gait Disturbance (1)
Abnormal Behaviour (1)
Accidental Overdose (1)
Chromaturia (1)
Cyst (1)
Gastritis (1)

If you or someone in your family has experienced a serious side effect to a health product, you are encouraged to report the experience to your health care professional (e.g. physician, pharmacist). You could also complete a copy of the side effect reporting form or report your side effect to FDA.

Side effects reports are analyzed to discover potential health product safety signals. Some important reactions may take an extremely long time to develop or occur infrequently. Continued monitoring of adverse reactions is thus essential to maintain a comprehensive safety and effectiveness profile of health products.

Lemsip Side Effects Reported to FDA

The following Lemsip reports list potential signals of serious risks and new safety information that were identified using the FDA Adverse Event Reporting System (FAERS).
FAERS is a database that contains information on adverse event and medication errors reports submitted to FDA by healthcare professionals (such as physicians, pharmacists, nurses and others), consumers (such as patients, family members, layers and others) and manufacturers.

The appearance of Lemsip on this list does not mean that FDA has concluded that the drug has the listed risk. It means that FDA has identified a potential safety issue, but it does not mean that FDA has found a causal relationship between the drug and the listed risk.
Abnormal Behaviour, Chromaturia, Vomiting, Overdose, Memory Impairment, Gait Disturbance, Pharyngitis Streptococcal, Cyst, Hallucination
on Nov 09, 2011 Female from UNITED KINGDOM , 25 years of age, was diagnosed with and was treated with Lemsip With Phenylephrine. Directly after, patient experienced the unwanted or unexpected Lemsip side effects: abnormal behaviour, chromaturia, vomiting, overdose, memory impairment, gait disturbance, pharyngitis streptococcal, cyst, hallucination. Lemsip With Phenylephrine dosage: Unk.
Associated medications used:
  • Acetaminophen (Unk)
  • Antibiotics (Unk)
  • Ibuprofen (Unk)
  • Cough Medicine (Unk)
  • Acetaminophen And Codeine Phosphate (Unk)
Patient was hospitalized.

Overdose, Hepatic Failure
Patient was taking Lemsip Original. Patient felt the following Lemsip side effects: overdose, hepatic failure on Nov 03, 2011 from UNITED KINGDOM Additional patient health information: Female , 25 years of age, was diagnosed with and. Lemsip Original dosage: N/A.
Multiple prescriptions taken:
  • Acetaminophen
  • Acetaminophen
  • Antitussive

Accidental Overdose
Adverse event was reported on May 24, 2011 by a Female taking Lemsip Cold + Flu (Dosage: N/A) . Location: UNITED KINGDOM , 72 years of age, After Lemsip was administered, patient encountered several Lemsip side effects: accidental overdose.
Multiple concurrent drugs taken:
  • Acetaminophen
  • Acetaminophen

Gastritis, Haematemesis, Oesophagitis, Vomiting
on Jun 10, 2008 Male from UNITED KINGDOM , 55 years of age, weighting 187.4 lb, was diagnosed with and was treated with Lemsip (combination Product). Directly after, patient experienced the unwanted or unexpected Lemsip side effects: gastritis, haematemesis, oesophagitis, vomiting. Lemsip (combination Product) dosage: Oral.
Associated medications used:
  • Lansoprazole
  • Aspirin

Keep Track of Side Effects

Note Your Observations

It is really important to keep of your symptoms, right from the time you start a new medicine. You can do it any way you prefer: in a notebook, in a computer file or using our online tool. You should also note down any other medicines you are taking at the same time, because there could be an interaction between these medicines.

Why Your Notes are Important

Your notes could be helpful in several ways:

  • You can use them to remind you of details that may alert your health care professional(s) to a problem
  • You will have a record to refer to in the future, in case you are ever prescribed the same medicine again

  • Log Form

    You can use the following log form to write down important information, like the date and time you experienced a side effect and your symptoms, how strong the symptoms were, and any other medicines you were using.

    Medicine Name and Dosage:


    Side Effects


    Date & Time

    Other Medicine(s) or Treatment(s)





    Scale: 1 = very mild to 10 = very bad

    Track Online

  • User Sign In
  • Register to track your side effects

  • You are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088.

    Discuss Lemsip Side Effects

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    Safety Alerts, Active Ingredients, Usage Information

    More About Lemsip

    Side Effects reported to FDA: 4

    Lemsip safety alerts: No

    Reported deaths: 1

    Reported hospitalizations: 1

    Latest Lemsip clinical trials