SEVEN SEAS JOINTCARE PROJOINT CAPSULES

Indications

• Symptomatic relief of mild to moderate osteoarthritis of the knee

Dosage

Children: Refer to the BNF for Children for

Adults: 200–400 mg daily, maximum 6.5 mg/kg per day, or 1250 mg once daily, or 1500 mg once daily dissolved in at least 250 mL of water; review treatment if no benefit after 2–3 months.

Mechanism of action

The mechanism of action of glucosamine in joint health is not entirely clear, but it is believed to involve several pathways. Glucosamine is a precursor for glycosaminoglycans, which are essential for cartilage integrity. It may also reduce inflammation by inhibiting interferon gamma and Nuclear factor kappa B subunit 65 (NF-κB p65), which could improve symptoms of arthritis and joint pain. Upon uptake by living cells, glucosamine reacts with ATP to form glucosamine-6-phosphate, further contributing to glycosaminoglycan synthesis.

Pharmacodynamics

Glucosamine is theorized to provide essential building blocks for the synthesis of glycosaminoglycans, potentially slowing the progression of osteoarthritis and alleviating joint pain. Although some studies have indicated modest improvements in joint pain and function among users, the overall evidence remains inconclusive. Glycosaminoglycans are critical for maintaining cartilage elasticity, strength, and flexibility, which are vital for joint health.

Pharmacokinetics

After oral administration, glucosamine is absorbed in the gastrointestinal tract and transported into the bloodstream, where it is metabolized into various forms, including glucosamine-6-phosphate. The exact pharmacokinetics, such as absorption rate and half-life, remain largely undefined, and much of the data is derived from animal studies. Further research is required to clarify its pharmacokinetic profiles in humans.

Adverse effects

• Constipation
• Diarrhoea
• Fatigue
• Gastrointestinal discomfort
• Headache
• Nausea
• Flushing
• Skin reactions

Interactions

• Glucosamine + warfarin: Severe (increases anticoagulant effect)
• Glucosamine + coumarins: Severe (increases anticoagulant effect)
• Glucosamine + acenocoumarol: Unknown (decreases anticoagulant effect)
• Glucosamine + coumarins: Unknown (decreases anticoagulant effect)

Precautions

• Asthma
• Impaired glucose tolerance
• Predisposition to cardiovascular disease

Pregnancy

Safety during pregnancy has not been established; consult with a healthcare provider.

Breast-feeding

Safety during breastfeeding has not been established; consult with a healthcare provider.

Storage

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

Formulations

• Alateris®
• Dolenio®
• Glusartel®

Indications

• Gastroesophageal reflux disease (GERD)
• Peptic ulcers
• Dyspepsia
• Acid-base balance disorders

Dosage

Children: Refer to specific acid formulations and guidelines for dosing. General dosing depends on the acid and its clinical use.

Adults: Refer to specific acid formulations and guidelines for dosing. General dosing depends on the acid and its clinical use.

Mechanism of action

Acids exert their effects primarily by dissociating into protons and anions in solution, thereby lowering the pH of the surrounding environment. This proton donation can influence various physiological processes, including enzyme activity, ion transport, and cellular signaling pathways. For example, hydrochloric acid in the stomach aids in digestion and the absorption of certain nutrients.

Pharmacodynamics

The pharmacodynamic effects of acids are largely dependent on their concentration and the specific type of acid involved. Weak acids may dissociate partially, leading to a less pronounced effect, while strong acids fully dissociate, leading to significant changes in pH and potential tissue irritation. Acids can also interact with various receptors and enzymes, influencing metabolic pathways and physiological responses.

Pharmacokinetics

The pharmacokinetics of acids vary widely depending on their chemical structure. Strong acids, such as hydrochloric acid, do not significantly enter systemic circulation due to their rapid dissociation in aqueous environments. Weak acids may be absorbed through the gastrointestinal tract, where their absorption is influenced by pH, solubility, and the presence of food. Metabolism and excretion pathways also vary, with some acids being metabolized to bicarbonate or other metabolites before excretion, primarily via the kidneys.

Adverse effects

• Gastrointestinal irritation
• Nausea
• Vomiting
• Abdominal pain
• Diarrhea
• Electrolyte imbalance

Precautions

• Use with caution in patients with renal impairment
• Monitor for signs of gastrointestinal bleeding
• Consider potential interactions with other medications that may affect gastrointestinal motility or pH levels

Pregnancy

The safety of various acids during pregnancy may vary; consult specific guidelines for each acid. Generally, use should be limited to essential cases.

Breast-feeding

Caution is advised when using acids during breastfeeding; consult specific guidelines for each acid.

Storage

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

Indications

• Osteoarthritis
• Joint pain
• Cartilage repair
• Joint health maintenance

Dosage

Children: Refer to healthcare professionals for guidance on dosing in children, as specific pediatric dosing information is not well established.

Adults: Refer to specific product labeling and consult healthcare professionals for guidance on dosing, as dosages can vary based on formulations and clinical guidelines.

Mechanism of action

Chondroitin works primarily by providing the building blocks necessary for the synthesis of glycosaminoglycans, which are critical components of cartilage. It is thought to inhibit the enzymes that break down cartilage, thereby promoting cartilage repair while also exhibiting anti-inflammatory properties. Additionally, chondroitin may enhance the retention of water in the cartilage, improving its elasticity and resilience.

Pharmacodynamics

Chondroitin has been shown to modulate inflammatory responses within the joints and may help to improve joint mobility and reduce pain associated with osteoarthritis. Its effects on cartilage metabolism are believed to contribute to its therapeutic benefits, although the clinical efficacy may vary among individuals. The anti-inflammatory properties may also contribute to a reduction in joint swelling and discomfort.

Pharmacokinetics

Chondroitin is poorly absorbed from the gastrointestinal tract, with bioavailability ranging from 12% to 36%. It is distributed in the extracellular matrix of cartilage and other connective tissues. Metabolism of chondroitin is not well understood, but it is believed to be metabolized in the liver. The elimination half-life in humans is not well defined, and it is primarily excreted via urine as metabolites. The effects of food on its absorption are still under investigation.

Adverse effects

• Nausea
• Diarrhea
• Constipation
• Abdominal pain
• Headache
• Skin reactions

Interactions

• Anticoagulants (e.g., warfarin) - may increase the risk of bleeding
• NSAIDs - may affect the efficacy of these medications

Precautions

• Use with caution in patients with a history of bleeding disorders
• Caution is advised in patients undergoing surgery due to potential bleeding risk
• Patients with shellfish allergies should consult a physician as some chondroitin supplements are derived from marine sources

Pregnancy

There is insufficient reliable information regarding the safety of chondroitin during pregnancy. It is advisable to avoid use unless prescribed by a healthcare professional.

Breast-feeding

It is not known if chondroitin is excreted in human milk. Caution is advised for nursing mothers considering its use.

Storage

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

Formulations

• Capsule
• Tablet
• Powder
• Liquid

Indications

• Nutritional support
• Management of dyslipidemia
• Support for cardiovascular health
• Anti-inflammatory therapies

Dosage

Children: Refer to the BNF for Children for specific dosing recommendations based on age and condition.

Adults: Dosage varies widely depending on the specific type of fatty acid and the condition being treated. Refer to specific guidelines for dietary or therapeutic doses.

Mechanism of action

Fatty acids exert their effects through several mechanisms, including serving as energy sources, components of cell membrane phospholipids, and precursors for signaling molecules such as eicosanoids. They can modulate gene expression and influence metabolic pathways by activating nuclear receptors, such as peroxisome proliferator-activated receptors (PPARs).

Pharmacodynamics

Fatty acids influence lipid metabolism, inflammation, and insulin sensitivity. They can alter membrane fluidity and receptor function, impacting cellular signaling. Saturated fatty acids may promote inflammatory processes, while unsaturated fatty acids, particularly omega-3 and omega-6 fatty acids, can exert anti-inflammatory effects and promote cardiovascular health.

Pharmacokinetics

Fatty acids are absorbed in the intestine via passive diffusion and are transported in the blood bound to albumin or as part of lipoproteins. They are metabolized in the liver, where they can undergo beta-oxidation to generate energy or be converted into ketone bodies. The half-life varies depending on the type of fatty acid and its incorporation into various tissues.

Pregnancy

Consult with a healthcare provider before use, as the effects of fatty acids during pregnancy can vary.

Breast-feeding

Consult with a healthcare provider before use, as some fatty acids may be excreted in breast milk.

Storage

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

Indications

• Osteoarthritis of the knee
• Viscosupplementation for joint pain
• Dry eye syndrome
• Ocular surgeries (e.g., cataract surgery)
• Wound healing

Dosage

Adults: Refer to specific guidelines or literature for adult dosing recommendations, as they can vary based on

Mechanism of action

Hyaluronate acts by increasing the viscosity and elasticity of synovial fluid in joints, leading to improved lubrication and shock absorption. It binds to water molecules, thus enhancing the hydration of tissues. In the context of osteoarthritis, it helps to restore the normal viscoelastic properties of the joint fluid, which can help alleviate pain and improve joint function. In ocular applications, it serves to lubricate the surface of the eye, aiding in the comfort and healing of the cornea.

Pharmacodynamics

Hyaluronate's pharmacodynamic effects are primarily related to its hydrophilic nature and its ability to form a gel-like consistency when mixed with water. This property allows it to provide mechanical support and cushioning in joints, reducing friction and wear in the articular cartilage. It also plays a role in cell signaling and tissue hydration, influencing cell proliferation and migration in wound healing.

Pharmacokinetics

Hyaluronate is administered via injection or topical application, depending on the indication. After injection into the joint space, it can remain for several weeks, but its half-life is influenced by factors such as the degree of synovial fluid viscosity and the presence of inflammation. Systemic absorption is minimal, and it is primarily metabolized by hyaluronidase enzymes found in various tissues, leading to fragmentation and clearance from the body. In ocular formulations, its retention time on the eye surface can vary based on the formulation and the presence of preservatives.

Contra-indications

• Hypersensitivity to hyaluronate or any component of the formulation
• Infection at the injection site
• Active skin diseases

Adverse effects

• Injection site reactions (pain, swelling, redness)
• Allergic reactions
• Joint effusion
• Increased joint pain
• Headache

Precautions

• Use with caution in patients with bleeding disorders
• Careful consideration in patients with a history of allergic reactions
• Not recommended for intra-articular injection in patients with active infections

Pregnancy

Safety in pregnancy has not been established. Use only if clearly needed and the potential benefits justify the risks.

Breast-feeding

It is not known if hyaluronate is excreted in human milk. Use with caution and only if clearly needed.

Storage

Store at 2-25 degrees Celsius. Protect from light. Do not freeze.

Formulations

• Sodium hyaluronate injection
• Hyaluronic acid gel

Indications

• Cardiovascular disease prevention
• Hypertriglyceridemia
• Rheumatoid arthritis
• Inflammatory bowel disease
• Cognitive decline and dementia
• Mood disorders

Dosage

Adults: Dosage varies based on the condition being treated. For general health, a common recommendation is 250-500 mg of combined EPA and DHA

Mechanism of action

Omega fatty acids exert their effects through various mechanisms, including the modulation of inflammatory pathways and the synthesis of specialized pro-resolving mediators. They are incorporated into cell membranes, affecting membrane fluidity and receptor function. Omega-3 fatty acids can also decrease the production of pro-inflammatory eicosanoids and increase anti-inflammatory mediators, promoting a balanced inflammatory response.

Pharmacodynamics

The pharmacodynamics of omega fatty acids involve their role in cellular signaling, gene expression, and lipid metabolism. Omega-3 fatty acids, particularly EPA and DHA, have been shown to influence the resolution of inflammation and enhance endothelial function. They also play a role in neuroprotection and cognitive function, with evidence suggesting that adequate omega-3 intake is associated with reduced risk of neurodegenerative diseases.

Pharmacokinetics

Omega fatty acids are absorbed in the intestine through the action of bile salts and pancreatic enzymes. Once absorbed, they are transported via chylomicrons into the lymphatic system and then into the bloodstream. They are distributed throughout the body, particularly in the brain and heart. The half-life of omega fatty acids can vary, with some studies suggesting an elimination half-life of several days to weeks, depending on the specific fatty acid and individual metabolism. They undergo beta-oxidation for energy production and can be converted into eicosanoids, which mediate various physiological functions.

Adverse effects

• Nausea
• Diarrhea
• Fishy aftertaste
• Allergic reactions
• Increased bleeding risk

Interactions

• Anticoagulants may increase the risk of bleeding when combined with omega-3 fatty acids
• Antihypertensive medications may have additive effects on blood pressure

Precautions

• Use cautiously in patients with bleeding disorders
• Monitor patients on anticoagulants for signs of increased bleeding
• Consider the source of omega-3 fatty acids, as some may contain contaminants

Pregnancy

Generally considered safe when used in recommended amounts, but high doses should be avoided due to potential bleeding risk.

Breast-feeding

Considered safe; omega-3 fatty acids can be beneficial for both mother and infant.

Storage

Store in a cool, dry place, away from light. Refrigeration may be required for some formulations to maintain stability.

Formulations

• Capsules
• Softgels
• Liquid oil
• Fortified foods

Indications

• Vitamin deficiency syndromes (e.g., scurvy for vitamin C deficiency, rickets for vitamin D deficiency)
• Support for immune function
• Antioxidant support
• Bone health maintenance
• Vision health
• Energy metabolism support

Dosage

Children: Refer to the BNF for Children for specific vitamin dosing guidelines, which depend on age and nutritional requirements.

Adults: Refer to specific vitamin guidelines as dosage varies significantly depending on the type of vitamin and individual needs.

Mechanism of action

Vitamins function primarily as coenzymes or precursors for coenzymes in enzymatic reactions. For instance, B vitamins are involved in energy metabolism, while vitamins A, C, D, E, and K support various physiological functions including vision, antioxidant activity, calcium regulation, and blood clotting. Each vitamin has a unique mechanism of action based on its structure and role in the body.

Pharmacodynamics

Vitamins exert their effects at the cellular level, influencing metabolic pathways, gene expression, and immune responses. For example, vitamin D regulates calcium and phosphate homeostasis, while vitamin A is crucial for vision and immune function. Deficiencies in vitamins can lead to a range of disorders, highlighting their importance in maintaining health.

Pharmacokinetics

The pharmacokinetics of vitamins vary widely. Fat-soluble vitamins (A, D, E, and K) are stored in liver and adipose tissues and can be released into circulation as needed. Water-soluble vitamins (B-complex and C) are not stored and must be consumed regularly, with excess amounts excreted in urine. Absorption rates, half-lives, and distribution can also differ based on the specific vitamin and individual metabolic factors.

Interactions

• tretinoin+vitamin: Severe (increases risk of vitamin toxicity)
• retinoids+vitamin: Severe (increases risk of vitamin toxicity)
• retinoids+vitamin: Moderate (increases risk of toxicity)
• carbamazepine+vitamin: Unknown (decreases effects)
• cobicistat+vitamin: Unknown (increases exposure)
• vitamin D substances+digoxin: Unknown (increases risk of toxicity)
• idelalisib+vitamin: Unknown (increases exposure)
• clarithromycin+vitamin: Unknown (increases exposure)

Pregnancy

Consult healthcare professional before use. Vitamin supplementation during pregnancy should be carefully managed to avoid hypervitaminosis.

Breast-feeding

Consult healthcare professional before use. Some vitamins can pass into breast milk and may affect the infant.

Storage

Store in a cool, dry place, away from direct sunlight. Ensure it is kept out of reach of children.

Formulations

• {'name': 'Vitamin A', 'form': 'Capsule', 'strength': '10000 IU'}
• {'name': 'Vitamin D', 'form': 'Tablet', 'strength': '1000 IU'}
• {'name': 'Vitamin E', 'form': 'Softgel', 'strength': '400 IU'}

Mechanism of action

The mechanism of action of glucosamine in joint health is unclear, however there are several possible mechanisms that contribute to its therapeutic effects. Because glucosamine is a precursor for glycosaminoglycans, and glycosaminoglycans are a major component of joint cartilage, glucosamine supplements may help to rebuild cartilage and treat the symptoms of arthritis. Some in vitro studies show evidence that glucosamine reduces inflammation via inhibition of interferon gamma and Nuclear factor kappa B subunit 65 (NF-κB p65), improving the symptoms of arthritis and joint pain. Clinical relevance is unknown at this time. When taken up by living cells, glucosamine reacts with ATP to form glucosamine-6-phosphate, the natural precursor of glycosaminoglycans (GAGs) that contain N-acetylglucosamine (keratan sulfate and Hyaluronan) and those that have N-acetylgalactosamine (heparan sulfate and chondroitin sulfate). These GAGs are polysaccharides composed of hexosamines and monosaccharides (e.g., galactose and glucuronic acid) arranged as a linear chain of repeating disaccharide units (such as the glucuronic acid and N-acetylgalactosamine-6-sulfate of chondroitin sulfate). With the exception of hyaluronan, GAGs do not exist alone in nature but are attached to specific "core" proteins, and the composite structures are called proteoglycans (protein-glycosaminoglycans). Both hyaluronan and many different kinds of proteoglycans (such as aggrecan, versican, and syndecan) are abundant throughout the body where they perform diverse functions.

Pharmacodynamics

The administration of glucosamine, in theory, provides a building block towards the synthesis of glycosaminoglycans, slowing the progression of osteoarthritis and relieving symptoms of joint pain. Studies to this date examining the efficacy of glucosamine sulfate have been inconclusive. Glycosaminoglycans contribute to joint cartilage elasticity, strength, and flexibility. A systematic review of various studies and guidelines determined that modest improvements were reported for joint pain and function in patients taking glucosamine. A consistent joint space narrowing was observed, but with an unclear clinical significance.