What are the recommended medications to treat hypotension and raise blood pressure?

Medications to Raise Blood Pressure in Hypotension

For orthostatic hypotension, midodrine and droxidopa are the FDA-approved first-line pharmacological agents, with fludrocortisone as an effective alternative starter drug, but only after maximizing non-pharmacological interventions including increased salt and water intake, physical counterpressure maneuvers, and abdominal binders.

Critical Context: This Question is About Hypotension, Not Hypertension

The evidence provided primarily addresses hypertension (high blood pressure) treatment, which is the opposite of what you're asking. I'll focus on the limited but relevant evidence for treating hypotension (low blood pressure), specifically orthostatic hypotension.

Non-Pharmacological Management (First-Line)

Before any medications, these interventions are essential 1, 2:

• Fluid and salt intake: Target 2-3 liters of fluids daily and 10g of sodium chloride 1
• Physical counterpressure maneuvers: Leg crossing, squatting, and muscle tensing for patients with warning symptoms 1
• Abdominal binders and compression stockings: Reduce venous pooling 1, 2
• Head-up tilt sleeping (10 degrees): Prevents nocturnal polyuria and maintains better fluid distribution 1
• Rapid cool water ingestion: Effective for acute orthostatic intolerance 1
• Medication review: Discontinue or adjust drugs causing hypotension (alpha-blockers, tamsulosin, tizanidine, sildenafil, trazodone, carvedilol) 3

Pharmacological Treatment Algorithm

First-Line Agents

1. Midodrine (5-20 mg three times daily)

• Alpha-agonist that increases blood pressure in both supine and upright positions 1
• Three randomized placebo-controlled trials demonstrate efficacy 1
• FDA-approved for orthostatic hypotension 4, 5
• Most robust evidence for increasing blood pressure and alleviating symptoms 5
• Recent data shows significant improvement in ambulatory blood pressure biomarkers and presyncope symptoms (64.2% improvement) 6

2. Droxidopa

• FDA-approved with consistent efficacy for orthostatic symptoms 4, 5
• Recommended as first-line therapy alongside midodrine 4
• Possesses strong evidence for increasing blood pressure 5

3. Fludrocortisone (0.1-0.3 mg once daily)

• Mineralocorticoid that stimulates renal sodium retention and expands fluid volume 1
• Recommended as a "valuable starter drug" 2
• Recent evidence shows significant increases in overall systolic BP, minimum systolic BP, and reduction in blood pressure dips <100mmHg 6
• Improved presyncope symptoms in 73.7% of patients 6
• Relatively greater effect compared to midodrine in recent comparative data 6

Second-Line Agents

4. Atomoxetine

• Blocks norepinephrine reuptake in nerve terminals 3
• Moderate efficacy demonstrated 4
• Emerging evidence shows promise, especially in central autonomic failure 5
• Can improve upright blood pressure without increasing baseline pressure 3

5. Pyridostigmine

• Facilitates cholinergic neurotransmission in autonomic ganglia 3
• Moderate efficacy, particularly in combination therapies 4
• Use in patients who fail first-line agents 5

Third-Line/Adjunctive Agents

6. Octreotide

• Potential for refractory orthostatic hypotension 4
• Useful in post-prandial hypotension 1
• Limited robust evidence 4, 5

7. Ephedrine/Pseudoephedrine

• Sympathomimetic agents with minimal data 5

Special Considerations for Hypertensive Patients with Orthostatic Hypotension

This is a challenging scenario where treating one condition worsens the other 3:

• Uncontrolled hypertension actually worsens orthostatic hypotension, so both should be managed 3
• Preferred antihypertensives: Angiotensin receptor blockers (ARBs) and calcium channel blockers 3
• Isolated supine hypertension: Treat with bedtime doses of short-acting antihypertensives 3
• Acarbose: Can prevent postprandial hypotension without increasing baseline blood pressure 3

Critical Pitfalls to Avoid

1. Starting medications before non-pharmacological measures: Salt, water, and physical maneuvers should be maximized first 1, 2

2. Ignoring medication culprits: Many commonly prescribed drugs cause hypotension and are easily overlooked 3

3. Supine hypertension: A major adverse effect of pressor agents that must be monitored 2, 4

4. Dosing too aggressively: Use the lowest dose and frequency that improves symptoms 3

5. Not individualizing for frailty: Elderly frail patients require more cautious approaches

Monitoring and Adverse Effects

Common adverse effects across agents include 4:

• Supine hypertension (most concerning)
• Dizziness
• Gastrointestinal disturbances
• Fatigue

The evidence strongly supports fludrocortisone or midodrine/droxidopa as first-line pharmacological options, with the choice guided by patient-specific factors including tolerability, drug interactions, and the presence of supine hypertension 6, 4, 5, 2.