DOLOACT GEL

Indications

• Pain and inflammation in musculoskeletal disorders
• Rheumatoid arthritis
• Osteoarthritis
• Dysmenorrhea
• Moderate pain relief

Mechanism of action

Ketoprofen's anti-inflammatory effects are primarily due to the inhibition of cyclooxygenase-2 (COX-2), an enzyme crucial for prostaglandin synthesis in the arachidonic acid pathway. This leads to reduced levels of prostaglandins, which mediate pain, fever, and inflammation. Ketoprofen also inhibits cyclooxygenase-1 (COX-1), contributing to its side effects such as gastrointestinal discomfort and ulceration. Additionally, it exhibits anti-bradykinin activity and stabilizes lysosomal membranes. Its antipyretic effects may involve action on the hypothalamus, enhancing peripheral blood flow, vasodilation, and heat dissipation.

Pharmacodynamics

As a nonsteroidal anti-inflammatory agent (NSAIA), ketoprofen shares pharmacological actions with other typical NSAIDs by inhibiting prostaglandin synthesis. It is effective in treating various conditions, including rheumatoid arthritis, osteoarthritis, and dysmenorrhea, and is used to alleviate moderate pain, thus providing both analgesic and anti-inflammatory effects.

Pharmacokinetics

Ketoprofen is absorbed from the gastrointestinal tract, with peak plasma concentrations typically reached within 1 to 2 hours after oral administration. It is extensively metabolized in the liver, primarily through conjugation, and excreted mainly via the urine. The drug has a half-life of approximately 1.5 to 2 hours, but this may vary based on individual factors such as age and liver function. Caution is advised in patients with hepatic or renal impairment, as these conditions may alter the drug's pharmacokinetics and increase the risk of adverse effects.

Contra-indications

• History of gastrointestinal perforation or ulceration
• Severe heart failure
• History of hypersensitivity to aspirin or other NSAIDs

Adverse effects

• Gastrointestinal discomfort
• Nausea
• Constipation
• Dizziness
• Drowsiness
• Fatigue
• Headache
• Rash
• Paraesthesia
• Skin reactions
• Increased risk of infection
• Angioedema
• Renal impairment
• Hypersensitivity reactions
• Photosensitivity
• Hematologic disorders
• Stomatitis
• Tinnitus
• Vision disorders
• Weight increase

Interactions

• May affect performance of skilled tasks such as driving
• Other NSAIDs may increase the risk of adverse effects

Precautions

• Caution in patients with dehydration or renal impairment
• Use with caution in elderly patients due to increased risk of serious side effects
• Careful monitoring required for prolonged therapy
• Caution advised in patients with a history of gastrointestinal disorders

Pregnancy

Avoid unless the potential benefit outweighs the risk. Avoid during the third trimester due to risk of fetal ductus arteriosus closure.

Breast-feeding

Amount probably too small to be harmful, but use with caution and avoid large amounts.

Storage

Store at room temperature, away from moisture and heat.

Formulations

• Oral suspension
• Oral solution
• Suppositories

Indications

• Topical pain relief for conditions such as osteoarthritis and neuropathic pain
• Management of postherpetic neuralgia
• Supportive treatment for muscle and joint pain
• Stimulation of digestion and appetite

Dosage

Children: Dosage for pediatric patients should be determined by a healthcare provider, taking into consideration

Adults: Topical formulations generally recommend application to the affected area, with specific dosing instructions provided by the product label. For oral supplements, follow the manufacturer's guidelines or consult a healthcare professional.

Mechanism of action

Capsaicin, the main active component in Capsicum, exerts its effects by binding to the TRPV1 (transient receptor potential vanilloid 1) receptor, which is a cation channel involved in the transmission of pain and heat sensations. This binding leads to the depolarization of sensory neurons, resulting in the release of substance P, a neuropeptide associated with pain signaling. Continuous exposure to capsaicin results in the desensitization of these receptors, leading to decreased pain perception over time.

Pharmacodynamics

The analgesic properties of Capsicum are attributed to its ability to alter the perception of pain. Capsaicin induces a sensation of warmth and pain initially, which is followed by a prolonged analgesic effect due to the depletion of substance P from the nerve endings. Additionally, Capsicum may exhibit anti-inflammatory effects through the modulation of cytokine release and inhibition of inflammatory pathways, contributing to its therapeutic applications in pain management and inflammatory conditions.

Pharmacokinetics

Capsaicin is poorly absorbed when ingested orally, but it can be effectively absorbed through the skin when applied topically. After application, it is metabolized by the liver, and its metabolites are excreted primarily through the kidneys. The onset of action for topical preparations can vary, with effects often observed within hours. The duration of action may last from several hours to days, depending on the formulation and the area of application.

Adverse effects

• Burning sensation at the site of application
• Skin irritation or rash
• Gastrointestinal upset (if ingested)
• Allergic reactions

Precautions

• Avoid contact with eyes and mucous membranes
• Use caution in patients with sensitive skin
• Consult a healthcare professional before use in patients with underlying health conditions

Pregnancy

Capsicum is generally considered unsafe during pregnancy due to potential effects on the fetus. Pregnant women should consult a healthcare provider before use.

Breast-feeding

Capsicum should be used with caution during breastfeeding as it may affect milk production or flavor.

Storage

Store in a cool, dry place away from direct sunlight. Keep out of reach of children.

Formulations

• Topical ointments or creams
• Capsules
• Powdered form for oral use

Indications

• Antimicrobial treatment
• Antioxidant therapy
• Flavoring agent in food
• Natural preservative
• Traditional medicine applications

Dosage

Children: Refer to specific product guidelines or consult a healthcare professional for appropriate dosing.

Adults: Refer to specific product guidelines or consult a healthcare professional for appropriate dosing.

Mechanism of action

The mechanism of action of oleoresin varies depending on its source and the specific compounds it contains. Generally, oleoresins exhibit antimicrobial activity, which may involve the disruption of microbial cell membranes or interference with metabolic processes. Additionally, some components may have anti-inflammatory and antioxidant effects, contributing to their therapeutic potential.

Pharmacodynamics

Oleoresins exhibit a range of pharmacodynamic effects, including antimicrobial, antioxidant, and anti-inflammatory activities. The specific effects will depend on the source of the oleoresin and its chemical composition. These properties are attributed to the various phytochemicals present, such as terpenes, phenolics, and other bioactive compounds, which can modulate biological pathways and influence physiological responses.

Pharmacokinetics

The pharmacokinetics of oleoresin are not well-defined due to the complexity of its composition. Generally, the absorption and metabolism of oleoresins can vary widely based on the individual compounds they contain. Lipophilic components may be absorbed through the gastrointestinal tract and metabolized in the liver, while other components may undergo different metabolic pathways. The elimination half-life is also variable, reflecting the diverse nature of its constituents.

Pregnancy

Safety in pregnancy has not been established, consult healthcare provider.

Breast-feeding

Consult healthcare provider before use during breastfeeding.

Storage

Store in a cool, dry place away from direct sunlight.

Mechanism of action

The anti-inflammatory effects of ketoprofen are believed to be due to inhibition cylooxygenase-2 (COX-2), an enzyme involved in prostaglandin synthesis via the arachidonic acid pathway. This results in decreased levels of prostaglandins that mediate pain, fever and inflammation. Ketoprofen is a non-specific cyclooxygenase inhibitor and inhibition of COX-1 is thought to confer some of its side effects, such as GI upset and ulceration. Ketoprofen is thought to have anti-bradykinin activity, as well as lysosomal membrane-stabilizing action. Antipyretic effects may be due to action on the hypothalamus, resulting in an increased peripheral blood flow, vasodilation, and subsequent heat dissipation.

Pharmacodynamics

Ketoprofen is a nonsteroidal anti-inflammatory agent (NSAIA) with analgesic and antipyretic properties. Ketoprofen has pharmacologic actions similar to those of other prototypical NSAIDs, which inhibit prostaglandin synthesis. Ketoprofen is used to treat rheumatoid arthritis, osteoarthritis, dysmenorrhea, and alleviate moderate pain.