You said 3 pills a day but what does that mean? Are the 5mg or 10mg? D-bol is liver toxic so liver protection is in order. You will put on weight and gain strength but its mostly water and is best used in conjunction with test which is an injectible. PCT is a must or the little gains you get will be for nothing and your more likely to end up in worse shape then you started. Sooooooo my advice is never take a steroid until you are over 21 and IMO you should be at least 25. You are nowhere near your genetic limit and with proper training and diet you have years of great gains ahead of you.

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The Fool say in his heart "There is no God"