The OAC Tree Stack (Ostarine, Andarine, Cardarine)

Have you ever wondered about SARM stacking?

This is an example SARMS stack we like to call the OAC Tree. With SARMS like other things out there it is always recommended to start with low doses first to judge the benefit or reaction and do your research. Remember more is not always better. You may even consider trying one product at a time before you try stacking. But for those that have tried SARMS and would like to try to stack SARMS this would be an example cycle.


Week 1-8 Ostarine 25 mg/day once a day in the morning

Week 1-8 Andarine S4 50 mg/day  25 mg in the morning and 25 mg in the evening

Week 1-8 Cardarine 10-20 mg day… split doses 12 hours apart

Week 1-8 Fenugreek and Tribulus extract, or low dose of a SERM like Nolvadex or Clomid if needed

Week 9-12 Mini PCT (Post Cycle Therapy) Continue Fenugreek and Tribulus extract, or low dose of a SERM like Nolvadex or Clomid

For those that are very sensitive to gyno you may consider a low dose of an AI (aromatase inhibitor) There is a slight chance for those in this category could experience this with Ostarine use. If you need to use an AI such as Aromasin or Arimidex, use a low dose and only every 3 days. From there you can judge if you need more or not.


Ostarine can be ran safely and effectively between 8-12 weeks. One SHOULD NOT exceed 25 mg day of ostarine use. Exceeding 25 mg can lead to significant negative effects. This is when the reports of suppression and gyno seem to occur. These are possible problems at a lower dose as well but many of the problems occur when doses are abused. Ostarine is only needed to be taken once a day, in the morning. It has a long half life, thus making split dosages unnecessary. Ostarine will provide a nice increase in strength and lean mass gain. It will also provide healing benefits that will be of high benefit for many users. The dosing is very simple and if followed correctly, side effects should be minimal to none. Ostarine is very clean in terms of gains and provides a multitude of benefits.


S4 is often known as the strongest SARM but comes with the most side effect problems. S4 use should never exceed 8 weeks of use. The most common side effect associated with S4 is the vision issues that it can cause. S4 can bind to the receptors in the eyes, causing a yellow tint to be seen by users. It can cause a user to have a very hard time adjusting from lightness to darkness and can have a very negative effect on night vision. It is impossible to say how bad these effects can be, when they can occur and at what dosage because it is distinctively different from user to user. I have developed a method on how to properly dose S4 for you all which I am including in this article. The dosing protocol is VERY delicate and needs to be taken seriously. The half life of S4 is only 4-6 hours so the doses are split in two each day. Since the half life is so short, many users that develop the visions side effects will run S4 for 5 days and then take 2 days off to help combat the problem. This is a method that helps to complete a cycle of S4 but it is nice to avoid this as much as possible to get the most out of S4. Another side effect that comes with S4 is that it is the most suppressive when it comes to SARMS. The suppression is nowhere near that of a regular anabolic cycle but it is still apparent and needs to be known. S4 will provide an effect that would be comparable to winstrol in the AAS world in terms of muscle hardening and a more aesthetic look. It will provide strength and very lean muscle as well. The gains and effects are very noticeable with S4, especially for users that are already very lean. S4 needs to be taken very seriously and dosed delicately to be ran safely and effectively. Below is a method of how to properly dose S4.


Some may now that the common side effect associated with S4 is the night vision issue. This results in one of two or both of these issues: A yellow tint associated with vision at night and/or a hard time adjusting to darkness or light… Normally the adjustment period is very quick but can effect some much worse than others. Basically, s4 can bind to the receptor in the eye causing these problems. UNDERSTAND that it is IMPOSSIBLE to know if this will happen to you and at what dosage this may happen… 50 mg is the general starting spot for dosing. Some people get the vision issue immediately even at this moderate dose. Some are able to get up to 100 mg a day with very minimal problems… There is no way to tell what category you fall into until you try… The vision issue is not permanent and the half life on s4 is very short (around 4-6 hours) Some people are forced to go to dosing S4 for 5 days and then taking 2 off because they cannot handle the vision issue… I try to do everything I possibly can to avoid this because I do not want to miss any days of usage…

So, it is important to understand how to dose S4 properly. Some people are content at staying at 50 mg for an entire 8 week cycle. Others, want to increase the dosage but there is a very specific protocol to follow to ensure that vision issues are kept to a minimum…

You must go 2 weeks at 50 mg to start… If you get through the 2 weeks with minimal to no vision issues then you may continue to increase the does but must proceed with caution… After two weeks you can bump to 60 mg…You must now stay on 60 mg between 14 days. Then it is okay to increase again to 70 mg if you are able to. It is said that 70-80 mg is a good dose to arrive at.  You should continue to follow protocol of 14 days on each 10 mg incremental increase. So basically increase your doses with caution to find out how much you can tolerate.  Following this protocol will be the safest and MOST EFFECTIVE way of dosing s4.


Cardarine GW can safely and effectively be ran for 8-12 weeks. The optimal dosage of GW is 10-20 mg day. The higher the dose, the more pronounced effects of endurance and fat loss will occur. GW provides users with an extreme increase in endurance and can have a pronounced effect in fat loss. The beauty of GW is that it is not catabolic, so if macros are taken in properly, it can still add muscle, while helping lose fat. GW is extremely effective and is used by many endurance athletes. The effects are noticeable very quickly. The half life of GW is longer but it is recommend a split dosage be used with 12 hours in between each dose. Side effects are highly debatable in animal studies and there are little documented side effects. As long as you stay within the recommended doses and dosing length you should have great benefits from GW. GW is still very popular today for it’s great benefits.


On a SARMS cycle and for your PCT you can use natural products like Fenugreek and Tribulus extracts to try to boost natural testosterone production because SARMS can cause suppression, especially with extended usage, thus it is imperative to keep suppression to a minimum. If you need something stronger you could add lose doses of a SERM like Nolvadex or Clomid.  Just remember SARMS are not anabolic steroids so you should be fine with using lower doses of SERMS if you need to use them.

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