O Max RX is an all natural male enhancement supplement with a scientific blend of ingredients designed to boost and promote longer, harder erections, sexual desire, stamina and arousal. Take 2 capsules 45 minutes prior to activity. Do not exceed 2 capsules in 24 hour period. <p> <b>WARNING:</b> This product contains Yohimbe Bark which contains Yohimbine. Do not use this product if you are at risk or are being treated for high blood pressure, heart, kidney, thyroid, psychiatric depression, seizure disorder or stroke. Consult your health care professional before use if you are taking antidepressants, MAO inhibitor, or any other prescription drug. Not for use by children, geriatric patients or females. Discontinue use and consult your health care professional if dizziness, sleeplessness, tremors, nervousness, headache, or heart palpitations occur. </p>