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Definition of Osteomalacia: Osteomalacia involves softening of the bones caused by a deficiency of vitamin D or problems with the metabolism of this vitamin.

Drugs associated with Osteomalacia

The following drugs and medications are in some way related to, or used in the treatment of Osteomalacia. This service should be used as a supplement to, and NOT a substitute for, the expertise, skill, knowledge and judgment of healthcare practitioners.

Learn more about Osteomalacia


Definition of Obsessive Compulsive Disorder: An anxiety disorder characterised by recurrent, persistent obsessions or compulsions. Obsessions are the intrusive ideas, thoughts, or images that are experienced as senseless or repugnant. Compulsions are repetitive and seemingly purposeful behaviour which the individual generally recognises as senseless and from which the individual does not derive pleasure although it may provide a release from tension.

Drugs associated with Obsessive Compulsive Disorder

The following drugs and medications are in some way related to, or used in the treatment of Obsessive Compulsive Disorder. This service should be used as a supplement to, and NOT a substitute for, the expertise, skill, knowledge and judgment of healthcare practitioners.

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Topics under Obsessive Compulsive Disorder

  • Trichotillomania (6 drugs)

Definition of Oliguria:

Secretion of a diminished amount of urine in relation to the fluid intake.

Synonym: hypouresis, oligouresis.

Drugs associated with Oliguria

The following drugs and medications are in some way related to, or used in the treatment of Oliguria. This service should be used as a supplement to, and NOT a substitute for, the expertise, skill, knowledge and judgment of healthcare practitioners.

Topics under Oliguria

  • Nonobstructive Oliguria (4 drugs)

Definition of Oophorectomy:

The removal of an ovary or ovaries.

Synonym: ovariectomy.

Drugs associated with Oophorectomy

The following drugs and medications are in some way related to, or used in the treatment of Oophorectomy. This service should be used as a supplement to, and NOT a substitute for, the expertise, skill, knowledge and judgment of healthcare practitioners.

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Topics under Oophorectomy

  • Hypoestrogenism (32 drugs)

Topics under Orthopedic Surgery

  • Hip Replacement (0 drugs)
  • Knee Joint Replacement (0 drugs)

Topics under Optic Nerve Disorder

  • Leber's Disease (0 drugs)

Learn more about Optic Nerve Disorder


Drugs associated with Opiate Adjunct

The following drugs and medications are in some way related to, or used in the treatment of Opiate Adjunct. This service should be used as a supplement to, and NOT a substitute for, the expertise, skill, knowledge and judgment of healthcare practitioners.


Drugs associated with Organ Transplant, Rejection Reversal

The following drugs and medications are in some way related to, or used in the treatment of Organ Transplant, Rejection Reversal. This service should be used as a supplement to, and NOT a substitute for, the expertise, skill, knowledge and judgment of healthcare practitioners.

Topics under Organ Transplant, Rejection Reversal

  • Rejection Reversal (1 drug)

Drugs associated with Onychomycosis

The following drugs and medications are in some way related to, or used in the treatment of Onychomycosis. This service should be used as a supplement to, and NOT a substitute for, the expertise, skill, knowledge and judgment of healthcare practitioners.

Topics under Onychomycosis

  • Onychomycosis, Fingernail (15 drugs)
  • Onychomycosis, Toenail (15 drugs)

Drugs associated with Onychomycosis, Fingernail

The following drugs and medications are in some way related to, or used in the treatment of Onychomycosis, Fingernail. This service should be used as a supplement to, and NOT a substitute for, the expertise, skill, knowledge and judgment of healthcare practitioners.


Definition of Osteopetrosis: The formation of abnormally dense bone, as opposed to osteoporosis.

Drugs associated with Osteopetrosis

The following drugs and medications are in some way related to, or used in the treatment of Osteopetrosis. This service should be used as a supplement to, and NOT a substitute for, the expertise, skill, knowledge and judgment of healthcare practitioners.


Definition of Oppositional Defiant Disorder: Oppositional defiant disorder is a pattern of disobedient, hostile, and defiant behavior toward authority figures.

Drugs (by generic name) associated with Oppositional Defiant Disorder

The following drugs and medications are in some way related to, or used in the treatment of Oppositional Defiant Disorder. This service should be used as a supplement to, and NOT a substitute for, the expertise, skill, knowledge and judgment of healthcare practitioners.

Learn more about Oppositional Defiant Disorder


Definition of Osteoarthritis: Osteoarthritis is a chronic disease causing deterioration of the joint cartilage (the softer parts of bones, which cushion their connections to each other) and the formation of new bone (bone spurs) at the margins of the joints.

Drugs associated with Osteoarthritis

The following drugs and medications are in some way related to, or used in the treatment of Osteoarthritis. This service should be used as a supplement to, and NOT a substitute for, the expertise, skill, knowledge and judgment of healthcare practitioners.

Learn more about Osteoarthritis


There are currently no drugs listed for "Osteoclastomas".

Definition of Osteoclastomas: A bone tumour composed of cellular spindle-cell stroma containing scattered multinucleated giant cells resembling osteoclasts. The tumours range from benign to frankly malignant lesions. The tumour occurs most frequently in an end of a long tubular bone in young adults.


Drugs associated with Organophosphate Poisoning

The following drugs and medications are in some way related to, or used in the treatment of Organophosphate Poisoning. This service should be used as a supplement to, and NOT a substitute for, the expertise, skill, knowledge and judgment of healthcare practitioners.

Topics under Organophosphate Poisoning

  • Gulf War Syndrome (0 drugs)

Drugs associated with Osteolytic Bone Metastases of Solid Tumors

The following drugs and medications are in some way related to, or used in the treatment of Osteolytic Bone Metastases of Solid Tumors. This service should be used as a supplement to, and NOT a substitute for, the expertise, skill, knowledge and judgment of healthcare practitioners.


Definition of Ovarian Cysts: An ovarian cyst is a sac filled with fluid that forms on or inside of an ovary.

Drugs associated with Ovarian Cysts

The following drugs and medications are in some way related to, or used in the treatment of Ovarian Cysts. This service should be used as a supplement to, and NOT a substitute for, the expertise, skill, knowledge and judgment of healthcare practitioners.

Learn more about Ovarian Cysts


Drugs associated with Onychomycosis, Toenail

The following drugs and medications are in some way related to, or used in the treatment of Onychomycosis, Toenail. This service should be used as a supplement to, and NOT a substitute for, the expertise, skill, knowledge and judgment of healthcare practitioners.


Drugs associated with Ocular Fungal Infection

The following drugs and medications are in some way related to, or used in the treatment of Ocular Fungal Infection. This service should be used as a supplement to, and NOT a substitute for, the expertise, skill, knowledge and judgment of healthcare practitioners.


Definition of Ovulation Induction: Techniques for the artifical induction of ovulation.

Drugs associated with Ovulation Induction

The following drugs and medications are in some way related to, or used in the treatment of Ovulation Induction. This service should be used as a supplement to, and NOT a substitute for, the expertise, skill, knowledge and judgment of healthcare practitioners.