Guanfacine: Side Effects, Uses & Monitoring
Facts extracted from current FDA product labeling for Guanfacine. Educational only — not medical advice.
Reported adverse reactions
| Reaction | Highest frequency reported* |
|---|---|
| Dry mouth | 54% |
| Somnolence | 39% |
| Drowsiness | 33% |
| Percent dropouts | 32% |
| Dizziness | 15% |
| Constipation | 15% |
| Headache | 13% |
| Fatigue | 10% |
| Asthenia | 7% |
| Impotence | 7% |
| Weakness | 5% |
| Insomnia | 4% |
*Highest percentage across placebo-controlled trial tables summarized in current labeling.
Labeled uses
Guanfacine tablets, USP are indicated in the management of hypertension. Guanfacine tablets, USP may be given alone or in combination with other antihypertensive agents, especially thiazide-type diuretics.
Medical disclaimer: Always consult a qualified healthcare professional about any medication.
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