INN monograph
Pyrilamine
Central Nervous System Stimulant [EPC], Methylxanthine [EPC] · POM
Source-linked · Updated 03 Aug 2026 · Source: FDA drug label via OpenFDA/DailyMed; RxNorm (NLM RxNav); PubChem; Local active-ingredient clinical extract
Kenya market
Wholesale / list prices where loaded
Risk first
Contraindications
- Hypersensitivity to the active substance or excipients.
- Additional absolute contraindications are indication- and product-specific — consult SmPC.
Precautions
- Warnings Liver warning: This product contains acetaminophen.
- Severe liver damage may occur if you take: more than 6 caplets in 24 hours, which is the maximum daily amount for this product with other drugs containing acetaminophen 3 or more alcoholic drinks every day while using this product Allergy alert Acetaminophen may cause severe skin or severe allergic reactions.
- Symptoms may include: • skin reddening blisters rash hives facial swelling asthma (wheezing) shock If a skin or general allergic reaction occurs, stop use and seek medical help right away.
- Do not use with any other drug containing acetaminophen (prescription or nonprescription).
- If you are not sure whether a drug contains acetaminophen ask a doctor or pharmacist if you have ever had an allertgic reaction to this product or any of its ingredients Ask a doctor before use if you have liver disease glaucoma difficulty in urination due to enlargement of the prostate gland a breathing problem such as emphysema or chronic bronchitis Ask a doctor or pharmacist before use if you are taking the blood thinning drug warfarin taking sedatives or tranquilizers When using this product you may get drowsy avoid alcoholic drinks excitability may occur, especially in children alcohol, sedatives, and tranquilizers may increase drowsiness be careful when driving a motor vehicle or operating machinery limit the use of caffeine-containing medications, foods, or beverages because too much caffeine may cause nervousness, irritability sleeplessness, and, occasionally rapid heartbeat.
- The recommended dose of this product contains about as much caffeine as a cup of coffee.
- Stop use and ask a doctor if new symptoms appear redness or swelling is present pain gets worse or lasts for more than 10 days fever gets worse or lasts for more than 3 days If pregnant or breast-feeding ask a health professional before use.
- Keep out of reach of chlidren.
- In case of overdose, get medical help or contact a Poison Control Center right away.
- Quick medical attention is critical for adults as well as for children even if you do not notice any signs or symptoms.
Point of care
Dosing
Adult
Directions do not exceed recommended dosage adults and children 12 years and over: take 2 caplets with water. Repeat every 6 hours as needed. Do not exceed 6 caplets per day. children under 12 years: consult a doctor
Paediatric
See label paediatric section if present; otherwise use paediatric formulary — do not extrapolate adult doses.
Renal
Review renal impairment dosing; many agents need CrCl/eGFR adjustment.
- CrCl 0–120: Confirm renal dosing in product SmPC / primary label.
Hepatic
Review hepatic impairment dosing; monitor LFTs if agent is hepatically cleared or hepatotoxic.
Safety
Drug interactions
- Professional use: confirm indication, dose, duration, monitoring and patient counselling points against current Kenya STG / EML and the product SmPC.
- Document allergy status and key interactions.
Safety
Adverse effects
- Adverse reactions vary by agent.
- Counsel on common predictable effects and serious warning symptoms (allergy, severe rash, jaundice, unusual bleeding, severe GI symptoms, neurological changes).
- Report suspected ADRs via national pharmacovigilance channels.
Use
Indications
- Uses for the temporary relief of these symptoms associated with menstrual periods: cramps bloating water-weight gain headache backache muscle aches fatigue Clinical selection for Pyrilamine should follow culture results where relevant, Kenya STG/EML recommendations, and the current product SmPC.
- Class context: Central Nervous System Stimulant [EPC], Methylxanthine [EPC].
- Confirm site-specific dose, duration and monitoring before prescribing.
Pharmacology
Mode of action
Mechanism is agent-specific.
Full mechanism text
Mechanism is agent-specific. At receptor, enzyme, ion channel, transporter or microbial target level, the drug alters a physiological or pathological pathway to produce its therapeutic effect. Confirm precise molecular mechanism in current SmPC / pharmacology reference for this INN before high-stakes decisions.
ADME
Pharmacokinetics & PD
| Onset | Product-specific |
|---|---|
| Duration | Product-specific |
| Route | See product SmPC |
| Elimination | are product-specific. Consider food effects, protein binding, hepatic CYP/UGT |
| Half-life | when adjusting for organ impairment, age and drug interactions. Verify parameters in the current SmPC. |
Full PK/PD text
Absorption, distribution, metabolism and excretion are product-specific. Consider food effects, protein binding, hepatic CYP/UGT metabolism, renal clearance and half-life when adjusting for organ impairment, age and drug interactions. Verify parameters in the current SmPC.
Kenya
Brands & prices
| Brand | Company | Pack | KES |
|---|---|---|---|
| No brands linked yet. | |||
Special populations
Pregnancy & lactation
Pregnancy
Use only if potential benefit justifies potential risk; prefer agents with better reproductive data when alternatives exist.
Lactation
Assess infant risk vs benefit of maternal therapy; prefer agents with lactation data.
Diet
Food & alcohol
- Food
- Food
Trust
Sources & disclaimer
Source: FDA drug label via OpenFDA/DailyMed; RxNorm (NLM RxNav); PubChem; Local active-ingredient clinical extract
Clinical review date not recorded.
Decision support only — not a substitute for clinical judgment, product SmPC, or Kenya STG/EML.