Estrogens has 94 known drug interactions based on U.S. FDA drug labeling data. Of these, 5 are contraindicated combinations that should be avoided entirely. 4 are classified as major interactions requiring close medical supervision. Notable interactions include combinations with Anastrozole, Eletriptan Hydrobromide, Ospemifene. Patients taking Estrogens should inform their healthcare provider of all current medications — including over-the-counter drugs and supplements — to avoid potentially harmful combinations. Data sourced from OpenFDA and the NIH National Library of Medicine.
- Total
- 94
- Contraindicated
- 5
- Major
- 4
- Moderate
- 84
- Minor
- 1
Contraindicated (5)
- Estrogens + Anastrozole— Estrogen-containing therapies should not be used with anastrozole as they may diminish its pharmacological action.
- Estrogens + Eletriptan Hydrobromide— Concomitant use of other 5-HT1 agonists within 24 hours of eletriptan is contraindicated due to additive effects.
- Estrogens + Ospemifene— Do not use estrogens concomitantly with ospemifene. Safety of concomitant use has not been studied.
- Estrogens + Raloxifene Hydrochloride— Safety of concomitant use has not been established and use is not recommended.
- Estrogens + Rizatriptan Benzoate— Other 5-HT1 agonists have additive vasospastic effects. Coadministration within 24 hours of rizatriptan benzoate is cont…
Major (4)
- Estrogens + Insulin Glargine— May decrease blood glucose lowering effect of LANTUS. Dosage increases and increased glucose monitoring may be required.
- Estrogens + Lenalidomide— Concomitant use with lenalidomide may increase the risk of thrombosis. Use with caution after benefit-risk assessment.
- Estrogens + Raloxifene— Safety of concomitant use has not been established and use is not recommended.
- Estrogens + Ticagrelor— Opioids delay and reduce absorption of ticagrelor and its active metabolite. Consider parenteral anti-platelet agent in …
Moderate (84)
- Estrogens + Acarbose— Estrogens produce hyperglycemia and may lead to loss of blood glucose control in patients receiving Acarbose. Close obse…
- Estrogens + Alogliptin And Metformin Hydrochloride— May produce hyperglycemia and lead to loss of glycemic control.
- Estrogens + Betamethasone Sodium Phosphate, Betamethasone Acetate, Lidocaine, Iodixanol, Povidine Iodine— May decrease hepatic metabolism of certain corticosteroids, thereby increasing their effect.
- Estrogens + Calcium Chloride— Increases risk of hypercalcemia when used concomitantly. Increase frequency of calcium concentration monitoring.
- Estrogens + Calcium Chloride Dihydrate— Increases risk of hypercalcemia. Increase frequency of calcium concentration monitoring.
- Estrogens + Calcium Gluconate— Concurrent administration may cause hypercalcemia. Monitor plasma calcium concentrations.
- Estrogens + Chenodiol— Increases biliary cholesterol secretion and may counteract the effectiveness of chenodiol.
- Estrogens + Cholestyramine Light— Cholestyramine may delay or reduce the absorption of estrogens.
- Estrogens + Cholestyramine Powder For Suspension— Cholestyramine may delay or reduce the absorption of estrogens.
- Estrogens + Choleystyramine Light— Cholestyramine may delay or reduce absorption of estrogens.
- Estrogens + Cosyntropin— May elevate plasma total cortisol levels and affect test accuracy. Stop estrogen-containing drugs 4-6 weeks before COSYN…
- Estrogens + Dantrolene Sodium— Caution advised with concomitant use. Hepatotoxicity has occurred more often in women over 35 years receiving concurrent…
- Estrogens + Dapagliflozin And Metformin Hydrochloride— Produce hyperglycemia and may lead to loss of glycemic control when used with XIGDUO XR.
- Estrogens + Depo-Medrol, Lidocaine, Isopropyl Alcohol— Estrogens may decrease hepatic metabolism of certain corticosteroids, increasing their effect.
- Estrogens + Dexamethasone— Estrogens may decrease hepatic metabolism of dexamethasone, thereby increasing its effect.
- Estrogens + Dexamethasone 1.5 Mg— Estrogens may decrease hepatic metabolism of dexamethasone, thereby increasing its effect.
- Estrogens + Dexamethasone Intensol— Estrogens may decrease hepatic metabolism of dexamethasone, thereby increasing its effect.
- Estrogens + Empagliflozin, Metformin Hydrochloride— May produce hyperglycemia and lead to loss of glycemic control; monitor closely.
- Estrogens + Ertugliflozin And Metformin Hydrochloride— May produce hyperglycemia and lead to loss of glycemic control; close monitoring recommended.
- Estrogens + Fludrocortisone Acetate— Increased levels of corticosteroid-binding globulin increasing bound inactive fraction. May require reduction in cortico…
- Estrogens + Fosphenytoin Sodium— May increase phenytoin serum levels; monitoring of phenytoin levels recommended.
- Estrogens + Glibenclamide— Estrogens may produce hyperglycemia and lead to loss of control of glyburide. Patients should be closely observed for lo…
- Estrogens + Glimepiride— May reduce glucose-lowering effect of glimepiride, leading to worsening glycemic control.
- Estrogens + Glipizide— Estrogens may produce hyperglycemia and lead to loss of glycemic control. Patient should be observed closely for loss of…
- Estrogens + Glipizide And Metformin Hydrochloride— Estrogens may produce hyperglycemia and lead to loss of blood glucose control. Patient should be closely observed for lo…
- Estrogens + Glyburide And Metformin Hydrochloride— Estrogens tend to produce hyperglycemia and may lead to loss of blood glucose control. Close observation required.
- Estrogens + Griseofulvin— Griseofulvin may enhance hepatic metabolism of estrogens, reducing effectiveness and causing menstrual irregularities. A…
- Estrogens + Hemin— CYP inducing drugs increase activity of ALAS leading to induction of ALAS1 through feedback mechanism, counteracting PAN…
- Estrogens + Hyaluronidase— Large doses of estrogens may require larger amounts of hyaluronidase for equivalent dispersing effect; these drugs rende…
- Estrogens + Hyaluronidase, Ovine— Large doses may require larger amounts of hyaluronidase for equivalent dispersing effect; tissues become partly resistan…
- Estrogens + Hydrocortisone— May increase serum cortisol-binding globulin, reducing hydrocortisone efficacy; may require dose increase.
- Estrogens + Hydrocortisone Acetate— Estrogens may decrease hepatic metabolism of corticosteroids, increasing their effect.
- Estrogens + Hydrocortisone Sodium Succinate— Estrogens may decrease hepatic metabolism of certain corticosteroids, thereby increasing their effect.
- Estrogens + Insulin Aspart Injection— May decrease blood glucose lowering effect. Dose adjustment and increased glucose monitoring may be required.
- Estrogens + Insulin Aspart-Szjj— May decrease blood glucose lowering effect. Dose adjustment and increased glucose monitoring may be required.
- Estrogens + Insulin Degludec— May decrease blood glucose lowering effect. Dosage increases and increased glucose monitoring may be required.
- Estrogens + Insulin Degludec And Liraglutide— May decrease blood glucose-lowering effect; dosage increases and increased glucose monitoring may be required.
- Estrogens + Insulin Detemir— May decrease blood glucose lowering effect of insulin detemir. Dosage increases and increased glucose monitoring may be …
- Estrogens + Insulin Glargine And Lixisenatide— May decrease the blood glucose lowering effect. Dose increases and increased glucose monitoring may be required.
- Estrogens + Insulin Glargine-Aglr— May decrease blood glucose lowering effect. Dosage increases and increased glucose monitoring may be required.
- Estrogens + Insulin Glargine-Yfgn— May decrease blood glucose lowering effect. Dosage increases and increased glucose monitoring may be required.
- Estrogens + Insulin Glulisine— May decrease blood glucose lowering effect. Dose adjustment and increased glucose monitoring may be required.
- Estrogens + Insulin Human— May decrease blood glucose lowering effect; dose adjustment and increased glucose monitoring may be required.
- Estrogens + Insulin Lispro— May decrease the blood glucose lowering effect. Dose adjustment and increased frequency of glucose monitoring may be req…
- Estrogens + Insulin Lispro-Aabc— May decrease blood glucose lowering effect. Dose increases and increased glucose monitoring may be required.
- Estrogens + Ipratropium Bromide And Albuterol Sulfate— Mutual inhibition of effects; β-blockers should be used cautiously in hyperreactive airways patients, with preference fo…
- Estrogens + Kenalog— Estrogens may decrease hepatic metabolism of corticosteroids, thereby increasing their effect.
- Estrogens + Levothyroxine And Liothyronine— Estrogens increase serum thyroxine-binding globulin, potentially decreasing free levothyroxine. Patients without functio…
- Estrogens + Levothyroxine Sodium— May increase serum thyroxine-binding globulin concentration, resulting in initial transient increase in FT4 followed by …
- Estrogens + Linagliptin And Metformin Hydrochloride— Estrogens may produce hyperglycemia and lead to loss of glycemic control. Close monitoring of glycemic control is recomm…
- Estrogens + Liothyronine Sodium— Oral estrogens may increase serum thyroxine-binding globulin concentration, altering T3 serum transport. Closely monitor…
- Estrogens + Lonapegsomatropin-Tcgd— Oral estrogens may reduce the serum IGF-1 response to SKYTROFA. Patients receiving oral estrogen replacement may require…
- Estrogens + Marcaine, Lidocaine, Kenalog, Povidone Iodine— Estrogens may decrease hepatic metabolism of corticosteroids, increasing their effect.
- Estrogens + Metformin— Produce hyperglycemia and may lead to loss of glycemic control when used with metformin.
- Estrogens + Metformin Er 500 Mg— May produce hyperglycemia and lead to loss of glycemic control. Monitor patient closely for loss of blood glucose contro…
- Estrogens + Metformin Hydrochloride— Drugs that produce hyperglycemia and may lead to loss of glycemic control; monitor blood glucose.
- Estrogens + Metformin Hydrochloride Extended-Release Tablets— May produce hyperglycemia and lead to loss of glycemic control during metformin therapy; monitor blood glucose.
- Estrogens + Metformin Hydrochloride Tablet— May produce hyperglycemia and lead to loss of glycemic control when used with metformin.
- Estrogens + Methylprednisolone— Estrogens may decrease hepatic metabolism of certain corticosteroids, thereby increasing their effect.
- Estrogens + Methylprednisolone Acetate— Estrogens may decrease hepatic metabolism of corticosteroids, thereby increasing their effect.
- Estrogens + Methylprednisolone Acetate, Lidocaine Hydrochloride, Povidine Iodine, Isopropyl Alcohol— Estrogens may decrease hepatic metabolism of certain corticosteroids, increasing their effect.
- Estrogens + Methylprednisolone Sodium Succinate— Estrogens may decrease the hepatic metabolism of certain corticosteroids, thereby increasing their effect.
- Estrogens + Phenytoin— May increase phenytoin serum levels; monitoring of phenytoin levels recommended.
- Estrogens + Phenytoin Sodium— May increase phenytoin serum levels; monitoring of phenytoin levels recommended.
- Estrogens + Prasugrel— Delay and reduce absorption of prasugrel's active metabolite due to slowed gastric emptying. Consider parenteral antipla…
- Estrogens + Prasugrel Hydrochloride— Opioid agonists delay and reduce absorption of prasugrel's active metabolite, presumably due to slowed gastric emptying.…
- Estrogens + Prednisolone Sodium Phosphate— Estrogens decrease hepatic metabolism of certain corticosteroids, increasing their effect.
- Estrogens + Prednisone— Estrogens may decrease hepatic metabolism of corticosteroids, thereby increasing their effect.
- Estrogens + Rifampin— Rifampin decreases estrogen exposure. Advise patients to change to non-hormonal birth control methods during rifampin th…
- Estrogens + Ropinirole— Higher doses of estrogens reduce clearance of ropinirole; starting or stopping hormone replacement therapy may require r…
- Estrogens + Sitagliptin And Metformin Hydrochloride— May produce hyperglycemia and lead to loss of glycemic control. Monitor blood glucose closely during concomitant use.
- Estrogens + Somapacitan-Beco— Oral estrogens may reduce the serum IGF-1 response to SOGROYA, potentially requiring higher SOGROYA dosages.
- Estrogens + Somatrogon-Ghla— Oral estrogens may reduce the serum IGF-1 response to NGENLA. Patients receiving oral estrogen replacement may require h…
- Estrogens + Somatropin— Larger doses of somatropin may be required in women using oral estrogen.
- Estrogens + Thalidomide— Estrogen-containing therapies may increase thromboembolism risk when used concomitantly with thalidomide.
- Estrogens + Thyroid— Estrogens increase serum thyroxine-binding globulin, decreasing free levothyroxine. Patients without functioning thyroid…
- Estrogens + Thyroid, Porcine— Increases serum thyroxine-binding globulin (TBg), decreasing free levothyroxine (T4) in patients without functioning thy…
- Estrogens + Tizanidine— Concomitant use not recommended; hypotensive effects may be cumulative.
- Estrogens + Tizanidine Hydrochloride— Concomitant use not recommended; hypotensive effects may be cumulative.
- Estrogens + Triamcinolone Acetonide— Estrogens may decrease hepatic metabolism of corticosteroids, increasing their effect.
- Estrogens + Triamcinolone Acetonide Extended-Release Injectable Suspension— Estrogens may decrease hepatic metabolism of certain corticosteroids, thereby increasing their effect.
- Estrogens + Ursodiol— Increase hepatic cholesterol secretion and may counteract the effectiveness of ursodiol.
- Estrogens + Ursosiol— Increase hepatic cholesterol secretion and encourage cholesterol gallstone formation, potentially counteracting ursodiol…
- Estrogens + Usodiol— Increase hepatic cholesterol secretion and encourage cholesterol gallstone formation, potentially counteracting ursodiol…
Minor (1)
- Estrogens + Risedronate Sodium— Risedronate sodium may be used concomitantly with hormone replacement therapy if considered appropriate; study showed no…