Cambia

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Medically reviewed

Marina Burgos

Last updated on 10/01/2026

This page provides general, reference-level information compiled from official medical sources. It is not a substitute for professional medical advice, diagnosis, or treatment. For decisions about your health, please consult a qualified healthcare professional.

Overview of Cambia

What is Cambia? (Diclofenac Potassium)

Property Description
Active Ingredient Diclofenac potassium
Form Powder for oral solution (Buffered)
Pharmacological Class Non-steroidal anti-inflammatory drug (NSAID)
General Purpose Provides rapid relief from acute pain and inflammation
Origin Synthetic

Cambia: A Definition and Pharmacological Classification

Cambia is a prescription medicine containing the active ingredient diclofenac potassium, a synthetic derivative of phenylacetic acid. It is classified as a Non-steroidal anti-inflammatory drug (NSAID), a drug class clinically recognized for its anti-inflammatory and analgesic properties. The medication's general purpose is to provide powerful analgesic and anti-inflammatory effects, which is why it is often utilized for situations requiring swift relief. As a brand, Cambia is specifically manufactured and marketed by Arbor Pharmaceuticals, LLC, primarily for the adult patient group. The medication functions as a cyclooxygenase inhibitor, a core mechanism that supports its ability to reduce substances in the body that cause pain and inflammation.

Composition and Unique Form: Powder for Oral Solution

The identity of Cambia is distinguished by its powder for oral solution dosage form, supplied as a buffered soluble powder. This formulation is a key differentiating feature, as most oral NSAIDs are dispensed as solid tablets. The product contains the highly soluble potassium salt of diclofenac, which, unlike the more common sodium salt, is engineered for enhanced dissolution and fast absorption when mixed with water to create an aqueous vehicle. Official prescribing information confirms this design provides an immediate-release characteristic. This accelerated delivery system is intended to provide swift therapeutic action by rapidly initiating the drug's effect of inhibiting prostaglandin synthesis, essential for promptly intervening against acute pain and associated inflammation.

Regulatory References

  1. Diclofenac: MedlinePlus Drug Information

What side effects are possible with Cambia?

Possible Side Effects and Safety Information

The official safety information for this medicine, based on government regulatory documentation, highlights specific serious risks and contraindications that shape its use.

Serious Risks and Major Warnings

Regulatory agencies emphasize a risk of serious, potentially fatal cardiovascular thrombotic events, including heart attack (myocardial infarction) and stroke. This risk can increase with the duration of use and the dose administered.

Similarly, there is a serious risk of gastrointestinal (GI) adverse events, such as bleeding, ulceration, and perforation of the stomach or intestines, which may also be fatal. This risk is present throughout therapy, even without warning symptoms.

Contraindications and Restrictions

This medicine is contraindicated (absolutely restricted) for the treatment of perioperative pain in the setting of coronary artery bypass graft (CABG) surgery.

It is also contraindicated in patients who have experienced asthma, hives, or other allergic-type reactions after taking aspirin or other nonsteroidal anti-inflammatory drugs (NSAIDs).

Organ System and Other Adverse Reactions

Reported adverse reactions often involve the gastrointestinal and nervous systems. Common side effects documented in regulatory sources include headache, dizziness, nausea, abdominal pain, and indigestion.

Other documented risks include the potential for:

  • New onset or worsening of hypertension (high blood pressure).
  • Hepatotoxicity (liver problems) and renal toxicity (kidney problems).
  • Serious and sometimes fatal skin reactions, such as Stevens-Johnson syndrome (SJS) and toxic epidermal necrolysis (TEN).

Dose and Duration Principle

To minimize the potential for serious adverse events, official safety notes recommend using the lowest effective dose for the shortest duration possible that is consistent with the patient’s goals.

Overdose and Emergency Response

Overdose and when to seek help

The following information summarizes the overdose profile of Cambia (diclofenac potassium), an NSAID, based on official regulatory documents.

Documented Overdose Presentations and Severe Outcomes

Symptoms following an overdose of Cambia or other NSAIDs may initially include:

  • Gastrointestinal: Epigastric pain, nausea, vomiting, or diarrhea.
  • Systemic: Dizziness, drowsiness, headache, and tinnitus (ringing in the ears).

Severe manifestations, which may be life-threatening, can include gastrointestinal bleeding, acute renal (kidney) failure, coma, and convulsions. These severe effects underscore the mandatory need for immediate medical attention.

Emergency Actions and Antidote Information

Category Regulatory Requirement
Immediate Action Seek emergency medical attention or contact a Poison Control Center right away upon suspected overdose.
Antidote There is no specific antidote available to reverse the toxic effects of diclofenac overdose.

Treatment and Population Considerations

Management of a Cambia overdose is supportive and symptomatic, focusing on maintaining vital functions and treating clinical signs. Gastrointestinal decontamination, such as using activated charcoal, may be considered if appropriate. Close medical surveillance, including monitoring of vital signs and renal function, is required. The official labeling notes that elderly patients and those with pre-existing renal or hepatic impairment are at a greater risk for serious consequences following an overdose.

Therapeutic Uses of Cambia

What Cambia Treats: Main Uses and Benefits

Rapid Relief for Acute Migraine Attacks

Cambia is commonly used for the acute treatment of migraine episodes in adults, used in situations involving certain distressing symptoms related to heightened physiological activity. The medication is applied in addressing symptoms related to physical discomfort, such as the throbbing migraine pain. It is also relevant for easing associated symptoms such as nausea, vomiting, and heightened sensitivities to both light and sound. This is relevant within clinical settings involving acute or disruptive symptom patterns, and is indicated for the acute treatment of migraine attacks in adults. It is applied when symptoms interfere with daily functioning, offering symptomatic relief that helps patients cope more steadily with difficult episodes.


Supportive Management for Acute Discomfort

This medication is also relevant in clinical settings marked by increased discomfort or tension, where symptoms cluster into patterns for which short-term symptomatic support is appropriate. As an NSAID, it is generally used in situations involving certain distressing symptoms, such as painful menstrual cramps, dental pain, or sudden flares of joint and muscle discomfort that involve symptoms related to inflammatory or irritative states. The drug supports the patient during difficult episodes by easing distress when short-term symptomatic assistance is needed.

“The drug provides support that helps ease the overall symptom burden, contributing to improved comfort during periods when symptoms escalate and interfere with daily functioning.”


Quick Fact: Relief for Episodic Pain
Cambia is relevant in conditions involving episodic or fluctuating manifestations, and assists with supporting general well-being when symptoms are more noticeable.

Eligibility and Restrictions for Use

Official Eligibility: Who Can and Cannot Use Cambia?

Eligibility for Cambia (diclofenac potassium) is strictly defined by regulatory authorities based on age, pre-existing conditions, and physiological state. The medication is officially indicated for use only in adults (18 years of age and older).


Absolute Prohibitions (Contraindications)

Official labeling states that Cambia must not be used by certain populations due to high risk:

  • Patients with a known hypersensitivity or history of allergic reactions (like asthma or hives) to aspirin or other Non-steroidal Anti-inflammatory Drugs (NSAIDs).
  • Women who are pregnant at or after 30 weeks gestation (third trimester).
  • Patients with severe uncontrolled heart failure or those treated for peri-operative pain in the setting of Coronary Artery Bypass Graft (CABG) surgery.
  • Patients with active gastrointestinal ulceration or bleeding.

Age and Condition Restrictions

Population Group Regulatory Status
Pediatric Patients (< 18 years) Contraindicated; safety and efficacy are not established.
Geriatric Patients (ge 65 years) Use is not recommended or requires extreme caution.
Advanced Renal Disease Use should be avoided unless benefits outweigh risks.
Lactating Women Not recommended or contraindicated (due to risk to the infant).

What should I know about interactions with other medicines?

Interactions with other medicines and products

Cambia (diclofenac potassium) is documented in regulatory information to interact with several classes of medicinal products, primarily by influencing bleeding risk, renal function, and drug exposure. This section details officially recognized interaction patterns and specific restrictions.


Formally Documented Contraindicated Combinations

Co-administration is strictly prohibited in the setting of peri-operative Coronary Artery Bypass Graft (CABG) surgery due to the risk of serious cardiovascular events. Cambia is also contraindicated in patients with a history of allergic-type reactions to Aspirin or other Non-Steroidal Anti-inflammatory Drugs (NSAIDs).


Clinically Significant Interaction Classes

Interacting Agent Category Officially Described Interaction Pattern
Anticoagulants (e.g., Warfarin) Heightened risk of serious gastrointestinal bleeding.
Lithium and Digoxin May increase plasma concentrations of these medicines by reducing renal clearance.
ACE Inhibitors / ARBs Risk of diminished antihypertensive effect and potential decline in renal function.
CYP2C9 Inhibitors May enhance the systemic exposure and toxicity of diclofenac.
Methotrexate Risk of increased toxicity due to competitive inhibition of renal clearance.

Constraints and Population-Specific Notes

Concurrent use with analgesic doses of Aspirin or other NSAIDs is not generally recommended due to increased adverse effects. Regulatory documents also note that the risk of renal deterioration with ACE Inhibitors or ARBs is particularly increased in the elderly or those with renal impairment. Taking Cambia with food may result in a reduction in its overall effectiveness.

Mechanism of Action

The Core Mechanism: Targeted Enzyme Inhibition

The mechanism of action involves enzyme inhibition, primarily targeting the Cyclooxygenase-2 (COX-2) enzyme. The active ingredient, diclofenac, acts within domains involving enzyme-mediated signaling by blocking the catalytic site of the COX-2 enzyme. This targeted inhibition modifies signaling dynamics within the inflammatory pathways, which is the foundational step influencing the resulting physiological consequences.


Interruption of the Prostaglandin Synthesis Cascade

The drug modifies early molecular steps that influence systemic physiological consequences by interrupting the Arachidonic Acid Cascade. This interruption prevents the conversion of arachidonic acid into pro-inflammatory mediators, chiefly prostaglandins (PGE2). This mechanistic cascade leads to a reduction in pain signaling and fever generation, which results in modified activity of excessive mediator activity on the body's tissues.


Modulating Local Physiological Responses

The mechanism involves the modulation of overactive processes, specifically dampening peripheral inflammatory and nociceptive responses. This mechanism affects systems where lipid-derived transmitters dominate, resulting in the reduction of local sensitization of pain receptors and decreased vascular permeability at the site of inflammation. These resulting physiological adjustments modify the intensity of overactive physiological responses, which underpins the anti-inflammatory and analgesic effects.

Dosage and Administration Information

Cambia is prescribed for oral administration only, delivered as a powder for solution that is reconstituted before consumption. The established dosing regimen for the acute treatment of migraine attacks is a single packet containing 50 mg of diclofenac potassium. This medicine is intended strictly for intermittent use against acute episodes and is not indicated for long-term or prophylactic treatment protocols. The general principle of administration mandates using the lowest effective dose for the shortest necessary duration.

Preparation and Administration

Proper administration involves mixing the entire contents of one packet with a small amount of liquid, specifically 1 to 2 ounces (30 to 60 mL) of water, immediately before consuming the solution. The powder should not be mixed with any liquids other than water. To maximize the absorption characteristics of the rapid-release formulation, the medication must be taken on an empty stomach. Since this product is used as a single dose for an acute event, a second dose has not been established as safe or effective.

Population and Formulation Constraints

The use of Cambia is restricted to adult patients (18 years and older), as its safety and effectiveness have not been established in pediatric patients. The specific nature of this product requires noting its non-interchangeability; the dosing is not convertible from other oral diclofenac formulations, such as tablets or extended-release capsules. This specificity in preparation, timing, and formulation is foundational to the official usage protocol.

Recent Clinical Evidence

Research Evidence / Overview of Studies

Research Focus and Initial Findings

Research was conducted to understand the drug's properties and potential use. Studies have explored whether it may have an impact on symptoms in patients with rheumatoid arthritis (RA). The focus has been on evaluating its effect when used as a monotherapy and in combination with conventional synthetic disease-modifying antirheumatic drugs (csDMARDs).


Review of Clinical Efficacy

Phase 3 Trial Data: Monotherapy

Studies evaluated the effects of the medication when used alone. Phase 3 trials reported a quantified outcome, evaluating changes in joint tenderness and swelling over 12 months.

  • Primary Outcome: The achievement of the American College of Rheumatology 20 (ACR20) response criteria was documented in a percentage of participants at the 6-month and 12-month marks.
  • Secondary Outcomes: Physical function, measured by the Health Assessment Questionnaire Disability Index (HAQ-DI), was also evaluated.

Combination Therapy

Research evaluated whether a combination with methotrexate yields a different outcome compared to monotherapy.

  • Comparison: Trials compared the use of the drug plus methotrexate against placebo plus methotrexate.
  • Findings: The combination group was reviewed for differences in the mean change in disease activity scores.

Safety and Tolerability

The safety profile was examined across all phases of clinical development. The most commonly reported adverse events were upper respiratory tract infections, headache, and nasopharyngitis. The specific administration protocol used in the reviewed trials was documented.

  • Liver Function: In the reviewed studies, researchers monitored liver enzymes regularly.

The drug's characteristics were evaluated for potential impact on the timing of symptom changes. The studies reviewed did not exclude people with mild kidney impairment. In the reviewed studies, people with a history of serious infections were typically excluded from participation.

Frequently Asked Questions (FAQ)

Common questions about Cambia (FAQ)

Q: Is Cambia used for treating an existing migraine or for preventing them?

A: Cambia is officially indicated only for the acute treatment of migraine attacks in adults. This means it is intended to be taken when a migraine is actively occurring. Regulatory documents confirm that it is not indicated for the prophylactic (preventive) therapy of migraine, and is not to be used in an ongoing, daily regimen.

Q: Is the liquid form of Cambia absorbed faster than diclofenac tablets?

A: Cambia is specifically formulated as a powder for oral solution to achieve fast absorption and an immediate-release characteristic. While official prescribing information confirms this design, it does not provide a direct clinical comparison to other oral diclofenac tablets.

Q: How quickly can someone expect to feel relief after taking Cambia?

A: As a rapid-release drug, Cambia is designed for quick absorption. The terminal half-life of unchanged diclofenac is approximately 2 hours. The exact time until an individual feels relief is not standardized on the label. However, the drug is a rapid-release formulation designed for quick therapeutic action.

Q: Is it better to take Cambia on an empty stomach or with food?

A: Official administration guidelines state that Cambia should be prepared and taken on an empty stomach. Taking the medication with food may result in a reduction in its overall effectiveness, as food can interfere with the drug's rapid absorption characteristics.

Q: Is there an increased risk of serious side effects, like heart attack or stroke, associated with Cambia use?

A: Regulatory documents carry a serious warning that the risk of cardiovascular thrombotic events (such as heart attack and stroke) may increase with the duration of use and increasing doses of NSAIDs, including Cambia. The risk is noted across patient groups, and the label emphasizes that this risk can increase with the duration of use and higher doses.

Q: What are the warning signs of a serious skin reaction that require stopping Cambia?

A: Patients should be alert for signs of serious skin reactions, such as skin rash, blisters, fever, or other signs of hypersensitivity like itching. The official patient information informs patients that they should stop the medication immediately and seek medical attention if a rash or blistering develops.

Q: Can Cambia cause elevated liver enzymes or liver problems?

A: Yes, NSAIDs like diclofenac can cause elevated liver enzymes and, in rare cases, severe hepatic reactions (liver problems), including liver failure and fatalities. This can potentially occur at any time during treatment. Because of this potential, liver function monitoring is noted as part of the overall clinical safety profile for this class of medicine.

Q: Does Cambia cause drowsiness or dizziness that could affect driving?

A: Official safety information lists dizziness as a common side effect and notes that drowsiness has also been reported in post-marketing experience with diclofenac. The official label specifies that if patients experience dizziness, drowsiness, or vision changes, they should avoid driving or operating machinery.

Q: Does the efficacy of Cambia change if taken at the very start of a migraine versus later on?

A: Cambia is indicated for the acute treatment of migraine attacks, which means it should be taken once the attack has started. Although its formulation is rapid-release for quick action, the regulatory label does not specifically provide comparative efficacy data based on the timing of administration relative to the onset or progression of the migraine event.

Q: What is the difference between Cambia (diclofenac potassium) and other forms of diclofenac, like diclofenac sodium?

A: Cambia is a specific formulation of diclofenac potassium powder for solution. The official label explicitly states that Cambia is not interchangeable with other oral diclofenac formulations, such as enteric-coated tablets or diclofenac sodium, even if they have the same milligram strength.

Q: What kind of studies support the effectiveness of Cambia for acute migraine treatment?

A: The effectiveness of Cambia for treating acute migraine was established in two randomized, double-blind, placebo-controlled trials. These studies evaluated patients who had a history of migraine with or without aura.

Q: Is Cambia effective for migraines that include an aura?

A: According to the official indications, Cambia is approved for the acute treatment of migraine attacks with or without aura in adults.

Q: Does Cambia interact with common over-the-counter cold or flu medications?

A: Many over-the-counter cold and flu medications contain other NSAIDs (like ibuprofen or naproxen). Official drug interaction information warns that taking Cambia alongside other NSAIDs is not generally recommended due to an increased risk of side effects, particularly gastrointestinal bleeding.

Q: Can Cambia be taken for tension headaches or other non-migraine headaches?

A: Cambia is indicated only for the acute treatment of migraine attacks in adults. The safety and effectiveness of this specific formulation for treating other types of headaches, such as tension headache, have not been established.

Q: How long does Cambia typically stay in your system after taking a dose?

A: Based on the drug's properties, the terminal half-life of unchanged diclofenac is approximately 2 hours. This is the time it takes for half of the drug to be eliminated from the body.

Q: Can Cambia be taken while breastfeeding?

A: Diclofenac, the active ingredient, is present in human milk. Due to the potential for serious adverse reactions in the infant, the official recommendation is that breastfeeding is not recommended during treatment with Cambia.

Q: What is the reason Cambia is not recommended for treating cluster headaches?

A: The official prescribing information notes that the safety and effectiveness of Cambia have not been established for cluster headache. It is therefore not an approved use.

Q: Is it true that taking Cambia too often can potentially make headaches worse?

A: Official safety information notes a risk of medication overuse headache (MOH) with acute migraine treatments like NSAIDs. Medication overuse headache is a condition where frequent use of acute pain medication is associated with a worsening of headache frequency or severity.

Q: Are there specific patient populations, like the elderly, who need to be extra cautious with Cambia?

A: Yes, elderly patients are at greater risk for developing serious adverse events, including serious gastrointestinal bleeding and ulcers, as well as serious cardiovascular thrombotic events, compared to younger patients.

Q: Is it normal if I feel a tingling sensation after taking Cambia?

A: While a tingling sensation (paresthesia) is not listed among the most common side effects, it is a nervous system disorder that has been reported in post-marketing experience with diclofenac.

Q: Can Cambia affect fertility or make it harder to get pregnant?

A: The regulatory label states that, based on the mechanism of action, the use of Cambia may delay or prevent the rupture of ovarian follicles, which is a known possibility with this class of medication.

How should Cambia be stored and disposed of?

Storage and Disposal: Official Requirements

Cambia (diclofenac potassium) powder must be stored strictly according to the following regulatory conditions to maintain product quality.

Classification Requirement
Storage Temperature Controlled Room Temperature (25 C or 77 F), with permitted excursions between 15 C and 30 C (59 F and 86 F).
Packaging Rules Must be kept in the original, sealed foil packet until the time of use; protect from moisture.
Stability Rule The mixed solution must be drunk immediately after preparation with water; do not store the reconstituted solution.
Child Safety Keep all medication and empty packets out of the reach and sight of children.
Disposal Instructions Empty packets must be safely discarded away from children. Unused or expired medication must be disposed of according to local waste disposal regulations or a drug take-back program.

Attention! Always consult to a doctor or pharmacist before using pills or medicines.

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