Call us
List of Medications


Tamoxifen is a custom pharmacy drug classified as an antiestrogen. It is used to treat early breast cancer as well as breast cancer that has spread to other areas of the body. Antiestrogens like tamoxifen block the estrogen activity in the breast, which may prevent some tumor growth.


Tamoxifen is often taken orally, one to two times a day, with or without food, or as prescribed by your physician. Consult with your compounding pharmacist if you have specific questions regarding potency or what to expect while taking the drug. Tamoxifen tablets should be taken whole and never swallowed, crushed, or split. Take tablets with water or other liquid. Do not take with anything alcoholic. Follow your physician's directions exactly.


Many and/or various side effects are a possible negative outcome of using any drug. Tamoxifen may unfortunately bring about side effects during usage for some patients/users. Knowledge is important so talk to your physician about all possible side effects and know how to react if you experience any. And remember, it is always important to contact your physician right away if you experience any side effect that lingers or seems to be exacerbating. Common side effects seen with tamoxifen are:

  • Hot Flashes
  • Increased Bone Pain
  • Increased Tumor Pain
  • Headache
  • Weight Loss
  • Stomach Cramps
  • Constipation
  • Pain or Reddening Around Site
  • Nausea
  • Excessive Tiredness
  • Dizziness
  • Depression

Severe Side Effects Overview:

While many patients will not experience severe side effects, they are certainly within the realm of possibility, so anyone using tamoxifen should discuss side effects with their physician before beginning use. Some possible severe side effects are listed below.

  • Loss of Appetite
  • Jaundice
  • Unusual Bruising
  • Abnormal Bleeding
  • Vision Problems
  • Fever
  • Blisters
  • Restlessness
  • Thirst
  • Muscle Weakness
  • Rash
  • Swelling (eyes, face, lips, tongue, throat)
  • Swelling (hands, arms, feet, ankles, lower legs)


Do not use this drug unless you have consulted with your physician and he or she has cleared you for its use. Always share all your medical history information and drug usage information with your physician.

Tamoxifen is contraindicated for the following:

  • Pregnancy

Tamoxifen may be contraindicated for the following:

  • Women Who Require Concomitant Coumarin-Type Anticoagulant Therapy
  • Women with a Medical History of Deep Vein Thrombosis
  • Women with a Medical History of Pulmonary Embolus

IMPORTANT NOTE: There may be other contraindications. Talk to your physician about other possible contraindications relevant to you or your condition.

  • "It is rare to find health professionals who are so willing to educate the patient on what they need to know."

    Clair C. | West Hollywood, CA