RT Journal Article SR Electronic T1 Efficacy of oral treatment with acyclovir and co-trimoxazole in first episode genital herpes. JF Genitourinary Medicine JO Genitourin Med FD BMJ Publishing Group Ltd SP 33 OP 37 DO 10.1136/sti.62.1.33 VO 62 IS 1 A1 Kinghorn, G R A1 Abeywickreme, I A1 Jeavons, M A1 Rowland, M A1 Barton, I A1 Al-Hasani, G A1 Potter, C W A1 Hickmott, E YR 1986 UL http://sti.bmj.com/content/62/1/33.abstract AB Forty patients presenting with first episode genital herpes were randomly allocated to seven day treatment with oral acyclovir alone, placebo alone, oral acyclovir plus co-trimoxazole, or placebo plus co-trimoxazole. Patients receiving acyclovir had significantly shorter periods of viral shedding (p less than 0.001), pain (p = 0.03), and times to lesion healing (p less than 0.05). Averaged over all patients there was no evidence that co-trimoxazole affected any of the variables, though in women cotrimoxazole was associated with a shorter time to lesion healing (p less than 0.01). Furthermore, the combination treatment gave significantly shorter times to lesion healing than acyclovir alone, placebo alone, or placebo and co-trimoxazole (p = 0.01) and good trends elsewhere (external lesions and duration of pain). Neither drug was associated with any adverse events or toxicity or influenced the subsequent recurrence rate.