Generic name:  Minoxidil, oral.

Loniten in its oral form is an antihypertensive. It lowers blood pressure by dilating blood vessels throughout the body. 

Quick Facts About Loniten


Used to treat high blood pressure.

Loniten Dosage

May take with food, water, or milk, or on an empty stomach. Take at the same time each day. Do not suddenly stop taking Loniten unless directed by your doctor; may worsen blood pressure.

  • Usual adult dose: initially — 5 milligrams per day, which doctor may increase to 40 milligrams, not to exceed 100 milligrams per day. Usually combined with a diuretic and a beta-blocker. For people on dialysis — lower doses may be prescribed.
  • Usual child dose: for children 12 years and older — same as adult dose. For children under 12 years — 0.1 milligram per I pound of body weight. Doctor may increase up to 0.5 milligram per 1 pound of body weight, not to exceed 50 milligrams per day total.
  • Missed dose: take as soon as possible, unless almost time for next dose. In that case, do not take missed dose; go back to regular schedule. Do not double doses.

Loniten Side Effects

Overdose symptoms:

chest pain; difficulty breathing; dizziness; elevated pulse; fainting; headache; severe indigestion; skin flushing; unusual swelling of arms, legs, face, or stomach. If you suspect an overdose, immediately seek medical attention.

More common side effects: abnormal hair growth, bronchitis, changes in heart rhythm, darkening of skin, difficult or painful urination, fatigue, flushing, nausea, rapid weight gain, unusual bleeding or bruising, vomiting, water and sodium retention.

No known less common or rare Loniten side effects.


Inform your doctor before combining Loniten with:

guanethidine (Ismelin); oral contraceptives; over-the-counter cough, cold, asthma, sinus, or diet medications.

No known food/other substance interactions.

Special Cautions

May cause birth defects. If pregnant or planning to become pregnant, inform your doctor immediately. May appear in breast milk; could affect a nursing infant

Seniors should use caution when taking Loniten in oral form.

Follow doctor’s instructions carefully for children.

  • Inform your doctor before starting Loniten if you have or recently had: angina (crushing chest pain), heart attack, congestive heart failure, kidney disease, stroke.
  • Doctor should monitor blood pressure and levels of sodium and water retention.
  • Should not take if sensitive to or allergic to Loniten or if you have pheochromocytoma (rare tumor which creates extra body stimulants).


HealthSurvey.org provides accurate and independent information prescription pills, over-the-counter medicines and natural products. This material is provided for educational purposes only and is not intended for medical advice, diagnosis or treatment. If you have questions about  dosage, or Loniten side effects, please contact your healthcare provider.