Anavar has very little effect on testosterone production. This is honestly the AAS I have researched most and I have an ongoing svrip from my doc. Var does not work by boosting test levels it works mainly through protein synthesis in the muscles. Thats why it is the only AAS used for kids and is also prescribed to women. It should not have an effect on libido. It doesnt for me at all. Cholesterol levels should be watched though this is true. At high doses 40mg +(max prescription dose for healthy adult male is 20mg e/d) It can definitely have adverse effects so you want to take something to combat it. You really don't need PCT with Var either cause it doesn't effect natural test production. You can if you want and most people on here say you should but my DOCTOR and ENDOCRINOLOGIST say no need especially at low to moderate dosage. Take it with Creatine and a high protein diet and even at 40-50mg you will see great results. And also by the way I took 30mg of Var for 12 weeks and my cholesterol levels and liver values were high but within normal ranges. If you are taking 50-75 100mg per day on here than yes watch out, but you are talking 3, 4, 5 X the maximum recommended prescription. Remember more AAS dosage = more side effects! If you are gonna do PCT anyway then I would only recommend Nolva at 20mg ED you'll be fine.