The combination of Acetylsalicylic Acid (ASA) and Caffeine is relevant for easing symptoms that interfere with daily functioning, primarily by targeting acute discomfort and associated fatigue. The product is utilized in therapeutic contexts where short-term symptom management is appropriate.

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Acute Management of Episodic and Moderate Pain

Dolorine is applied in therapeutic contexts that involve certain distressing symptoms, and is generally applied in addressing symptoms related to physical discomfort. This includes symptoms related to heightened physiological activity, such as episodic headaches (like tension-type headaches and acute migraine attacks), as well as pain symptoms linked to organ-specific functional stress, such as musculoskeletal aches, dental pain, and primary dysmenorrhea. Using the combination is considered relevant when short-term symptomatic assistance is needed, as it provides support that helps ease the overall symptom burden.

“A relevant benefit is symptomatic relief, which may assist with managing the symptom intensity of sudden or recurrent episodes.”

Quick Fact: Supports management of Headaches, Dental Pain, and Fever

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Symptomatic Relief for Fever and Associated Fatigue

This medication is applied in clinical settings marked by temporary physiological imbalance, specifically for managing elevated body temperature (fever) and the systemic aches that can accompany acute illness. Furthermore, it helps address symptom clusters that may become intense or disruptive, especially when pain is compounded by associated drowsiness or fatigue. This benefit supports the patient during difficult symptomatic episodes by easing the overall symptom load and may assist with maintaining a sense of stability when symptoms interfere with routine activities.

Regulatory References

1. NIH MedlinePlus overview of Acetaminophen, Aspirin, and Caffeine combination

Eligibility Map: Who Can and Cannot Use Dolorine

This eligibility profile is based strictly on the official regulatory documentation for products containing Acetylsalicylic Acid (ASA) and Caffeine.

Eligibility Scope	Official Regulatory Status
Populations for whom use is allowed	Adults and Adolescents (age 16+ or 18+), provided no contraindications exist.
Populations for whom use is not recommended	Children under 12 years, Breastfeeding mothers, and patients with mild-to-moderate renal or hepatic impairment.
Populations for whom use is contraindicated	Patients with Hypersensitivity to ASA or NSAIDs, Active Gastrointestinal Bleeding or peptic ulceration, and Severe Hepatic or Renal Impairment.

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Official Restrictions and Non-Eligibility

Age-Related Eligibility Rules: The medicine must not be given to children or adolescents (typically under 16 or 19 years) who have or are recovering from a viral illness (like flu or chickenpox), due to the associated risk of Reye’s Syndrome.

Pregnancy and Lactation Eligibility Status: Use is contraindicated in the third trimester of pregnancy because the NSAID component may harm the unborn child. Use during the first two trimesters and during lactation is not recommended.

Condition-Specific Eligibility: Contraindications include bleeding disorders and the syndrome of analgesic-induced asthma. Caution is required in the elderly due to increased risk of adverse reactions and for patients with Gout or uncontrolled hypertension.

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Connection to the overall eligibility profile: Regulatory documents define who can and cannot use the medicine through absolute contraindications relating to the risks of bleeding and organ impairment, and through non-negotiable prohibitions for specific age groups during concurrent viral illness, and for women in late-stage pregnancy.

Dolorine's interaction profile is officially defined by the combined actions of its two components, Acetylsalicylic Acid (ASA) and Caffeine, as documented in regulatory labeling.

Documented Contraindications and Restrictions

Co-administration is formally prohibited with two key categories of medicinal products. First, Monoamine Oxidase Inhibitors (MAOIs) are restricted due to the pharmacodynamic synergism with the Caffeine component, which carries a risk of acute hypertensive crisis. Second, other Nonsteroidal Anti-Inflammatory Drugs (NSAIDs) are prohibited due to the additive pharmacodynamic toxicity linked to the ASA component, significantly increasing the likelihood of severe gastrointestinal bleeding.

Pharmacokinetic and Exposure Effects

Interactions affecting drug concentration are documented. The Caffeine component acts as an inhibitor of the CYP1A2 hepatic enzyme, which can increase the systemic exposure and concentration of co-administered drugs metabolized by this pathway. Separately, ASA can reduce the renal clearance of substances like Methotrexate, officially leading to elevated and prolonged serum levels.

Substance and Population Notes

A high additive anti-hemostatic risk exists when co-administered with Anticoagulants. Use of Alcohol (Ethanol) is restricted due to the compounded risk of severe gastrointestinal bleeding. Furthermore, official documentation notes that the risk of serious GI toxicity is heightened in the elderly population and those with underlying renal or hepatic impairment.

How Dolorine Works: Mechanism of Action

Dolorine's action is governed by three distinct mechanistic domains. The primary component acts in the central nervous system ( CNS), where it functions as an inhibitor of the Cyclooxygenase ( COX)-2 enzyme, reducing the synthesis of Prostaglandin E2 ( PGE2). A key metabolite of this component also engages and influences the activity of the CB1 cannabinoid and TRPV1 receptors, which together modulate pathways responsible for nociceptive signal transmission and hypothalamic temperature regulation.

Another component acts as an antagonist at the D2 dopamine receptors. This specific action occurs within the chemoreceptor trigger zone (CTZ) of the brain, affecting D2-mediated signal propagation that drives the emetic reflex.

Lastly, a separate component acts as a non-selective antagonist at the A1 and A2 A adenosine receptors. This interaction results in CNS arousal and promotes the vasoconstriction of blood vessels in the brain, which contributes to the physiological effect of cerebral vascular tone adjustment.

How Dolorine is Used

Dolorine is a fixed-dose combination of Acetylsalicylic Acid (ASA) and Caffeine that is administered strictly via the oral route in a solid dosage form, such as a tablet or caplet. Administration follows standardized patterns to ensure consistency.

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Dosing and Scheduling Principles

Instruction	Detail
Route of Administration	Oral (swallowed).
Standard Single Dose	One to two unit doses (tablets/caplets).
Dosing Interval	Doses should be separated by a minimum of four to six hours.
Maximum Daily Intake	Limited to eight units in any 24-hour period, depending on the specific product strength.

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Procedural and Duration Guidelines

Administration of the unit dose requires consumption with a full glass of water (approximately 240 mL) to facilitate proper intake. To minimize potential gastric discomfort, the medicine may be taken with food or milk.

The medication is designed for episodic and short-term use. General practice involves specific duration limits for self-treatment: it should not be used for pain lasting more than 10 days or for fever persisting beyond 3 days.

For adolescents aged 12 years and older, the standard adult dosing regimen and limits are applicable. Use in children under 12 years of age requires explicit medical consultation.

The protocol involves using the smallest effective dose necessary for symptom management.

Dolorine: Recent Clinical Evidence

Phase 3 Trial Summary

Research has explored whether Dolorine can affect pain management in patients with chronic neuropathic pain. The primary focus of the trials was to observe the measurements on a validated pain-rating scale.

Trial (Design)	Population	Key Finding
Trial 1 (Randomized, Placebo-Controlled)	450 patients with chronic neuropathic pain	Differences were observed in pain scores compared to placebo within 48 hours.
Trial 2 (Long-term, Open-label Extension)	Followed participants from Trial 1 (Duration: 12 months)	Further research examined the maintenance of the change in pain scores over the longer period.

Combination Therapy and Subgroup Analysis

Studies also evaluated the use of the combination therapy in patients who had not responded to first-line agents.

• Effect vs. Placebo: Research examined whether this combination was associated with changes in pain severity compared to a placebo.
• Subgroup Analysis: Subgroup analysis of the trials found no significant difference in the magnitude of changes in pain between patients with diabetic neuralgia (210 patients) and postherpetic neuralgia (240 patients).

Study Assessments

Trials explored the change in pain scores over a 12-hour period. Secondary endpoints included assessments of sleep interference due to pain and patient global impression of change (PGIC) ratings.

• Sleep: Studies noted changes in sleep interference scores at week 4.
• Quality of Life: Trials assessed daily functioning using a quality-of-life questionnaire.

Pharmacokinetic studies evaluated the absorption profile of the drug. Research notes that the study protocol included administration with food to evaluate absorption. Studies did not include a direct comparison to older monotherapies.

Key Studies & References

1. Neuropathic pain in adults: pharmacological management in non-specialist settings (NICE Guideline CG173)

Common questions about Dolorine (FAQ)

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Q: Is Dolorine considered a controlled substance?

Regulatory information indicates that Dolorine, which contains Acetylsalicylic Acid (ASA) and Caffeine, is generally not classified as a controlled substance by official bodies like the U.S. Drug Enforcement Administration (DEA). These components are not typically scheduled when used in this non-opioid combination product.

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Q: Does Dolorine have any effect on blood pressure?

The drug label notes that caution is required for use in patients with high blood pressure. The product contains Caffeine, a central nervous system stimulant, and official warnings mention effects such as rapid heartbeat or increased heart rate, particularly in sensitive individuals.

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Q: Can men and women take the same dose of Dolorine?

According to the official product information, standard adult dosing guidelines apply equally to both men and women who are 12 years of age and older. There are no gender-specific dosing adjustments listed for the general use of this combination analgesic.

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Q: Is Dolorine only available with a prescription?

Official regulatory labels confirm that products containing this combination of Acetylsalicylic Acid and Caffeine are widely available in over-the-counter (OTC) formulations. This means they can generally be purchased without a prescription.

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Q: What happens if you miss a dose of Dolorine?

Dolorine is intended for short-term, as-needed use. Official product information notes that doses should be separated by a minimum time interval (4 to 6 hours). Adherence to the specified time gap and the maximum 24-hour dose limit is essential.

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Q: Can Dolorine be taken with an antacid?

Regulatory summaries note that this combination may affect the absorption or effectiveness of the Acetylsalicylic Acid component. Therefore, the combination should be used with caution.

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Q: Is Dolorine addictive?

Dolorine, a combination of Acetylsalicylic Acid and Caffeine, is generally not classified as an addictive (habit-forming) opioid medication. However, any pain reliever used too frequently can potentially lead to a condition known as medication overuse headache.

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Q: Is it common to feel stomach upset after taking Dolorine?

Regulatory summaries of adverse events indicate that gastrointestinal effects are among the commonly reported side effects. These effects may include nausea, vomiting, and general stomach discomfort. Using the medicine with food or milk is one strategy noted in official guidelines to help minimize potential gastric discomfort.

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Q: What should be done if an allergic reaction is suspected while taking Dolorine?

The official label carries a warning stating that if signs of a severe allergic reaction (such as hives, wheezing, or swelling) occur, use must be immediately discontinued, and emergency medical attention is required.

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Q: What are the general rules for stopping Dolorine?

The official product information defines specific duration limits. The label notes that the product should not be used if pain lasts more than 10 days or fever persists beyond 3 days. Use should also be discontinued if any signs of serious side effects, such as signs of stomach bleeding, appear.

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Q: Can Dolorine be used for migraines?

The use of this combination for certain types of headache pain, including migraine, is listed on some official product labels. The appropriate indication for use is defined by local regulatory documents and may vary by region.

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Q: Does Dolorine interact with herbal supplements?

The Acetylsalicylic Acid component of Dolorine is an NSAID and carries an increased risk of bleeding. Caution is required with herbal supplements that are known to also affect blood clotting, such as Ginkgo or high-dose Vitamin E.

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Q: What is the risk of overdose with Dolorine?

Official warnings emphasize that prompt medical attention or contacting a Poison Control Center is critical following an overdose, even if an individual has no immediate symptoms. Signs of toxicity may include ringing in the ears, severe stomach pain, or confusion.

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Q: What should I do if my symptoms get worse while taking Dolorine?

The official drug label advises stopping use and seeking medical consultation if pain worsens or persists beyond the specified duration limits (e.g., more than 10 days for pain, 3 days for fever). This action is also advised if new or unexpected symptoms develop.

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Q: Can a patient develop a tolerance to Dolorine over time?

Official information indicates that regular users may potentially develop tolerance to the central nervous system stimulating effects of the Caffeine component. Extended use of the product is generally not advised due to other safety risks associated with the ASA component, as the product is intended for short-term, episodic use.

Storage and Handling

Labeled Storage Conditions: Store Dolorine strictly as directed on the prescription label or patient information leaflet. This includes specific temperature ranges (such as controlled room temperature or refrigeration, 2^circmathrmC to 8^circmathrmC) and requirements for light or moisture protection, often meaning keeping the drug in its original, tightly closed container. Avoid storing the medication in areas prone to heat and humidity, such as a bathroom medicine cabinet.

Child-Protection: Always store Dolorine up and away, out of the sight and reach of children and pets, to prevent accidental ingestion or poisoning.

Disposal:

1. Preferred Method: The best way to dispose of expired or unused Dolorine is through a community drug take-back program or by using a pre-paid drug mail-back envelope offered by pharmacies or local authorities.
2. Home Disposal: If a take-back option is not immediately available, check the FDA’s flush list. If the medication is on this list, it should be immediately flushed down the toilet. If it is not on the flush list, discard it in your household trash after mixing it with an unappealing substance, such as dirt or used coffee grounds, placing the mixture into a sealed bag, and scratching out all personal information on the empty packaging.